ftp命令。

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ftp 命令

• ftp 命令用于互连网络上本地与远程主机间传送文件。
  
• ftp 有两种使用方式：带 host 参数，则立即建立本地与远程指定主机的实际连接；
  不带 host 参数，则进入 ftp 命令方式，然后可用命令再去建立连接。

ftp 直接连接方式

ftp 命令方式

ftp 命令表
ftp 直接连接方式
     格式： $ ftp [-v] [-d] [-i] [-n] [-g] host
     解释： ftp 命令带 hosts 参数，是直接连接方式，允许用户立即与命令行中指出
            的主机建立连接。其中 host 是远程主机名或实际地址。主机建立连接后，
            ftp 提示用户输入用户名和口令，注册成功与否都有返回信息。然后显示
            提示符 ftp> ，等待输入命令。选项含义如下：
            -v  显示来自远程服务器的全部响应及数据传送的统计报告。即 Verbose
                方式处于 on 状态。
            -v  允许诊断。
            -i  在多文件传输时不允许交互提示功能起作用。
            -n  在与远程主机建立连接时，关闭自动注册。
            -g  表示不允许文件名全局化。
连接实例：
$ftp www.wz.zj.cninfo.net
Connectde to 3wwz.zj.cn.cninfo.net.
220 www.wz.zj.cninfo.net FTP server (Version wu-2.4(3) Thu Apr 23 12:31:47 CDT 1
998) ready.
User (3wwz.zj.cn.cninfo.net:(none)): corner
Password:
230 User corner logged in.
ftp> command （command 见下表命令一栏）
ftp> quit
221 Goodbye
ftp 命令方式
     格式： $ ftp
            ftp> command
     解释： ftp 不带 hosts 参数时进入命令方式，此时提示符是 ftp> 。command 见
            下表命令一栏。
连接实例：
$ftp
ftp> open www.wz.zj.cninfo.net
Connectde to 3wwz.zj.cn.cninfo.net.
220 www.wz.zj.cninfo.net FTP server (Version wu-2.4(3) Thu Apr 23 12:31:47 CDT 1
998) ready.
User (3wwz.zj.cn.cninfo.net:(none)): corner
Password:
230 User corner logged in.
ftp> command （command 见下表命令一栏）
ftp> quit
221 Goodbye
　
　
UNIX 下 SCO TCP/IP ftp 命令表
序号
命 令
功 能
1
!
执行本地 shell 命令
2
$
执行宏功能
3
account
发送帐号口令到远程服务器
4
append
附加到文件中
5
ascii
设置 ASCII 码传输类型
6
bell
命令完成时响铃
7
binaey
设置二进制码传输类型
8
bye
结束并退出 ftp
9
case
触发远程文件名大小写变化功能
10
cd
改变远程工作目录
11
cdup
把远程工作目录改为其父目录
12
close
结束 ftp
13
cr
触发回车换行功能
14
delete
删除远程文件
15
debug
触发调试方式
16
dir
列远程目录
17
disconnect
结束 ftp
18
form
设置文件传输格式
19
get
取文件
20
glob
触发本地文件名元字母扩展功能
21
hash
为每个传输缓区触发#号打印功能
22
help
显示求助信息
23
lcd
改变本地工作目录
24
ls
列远程工作目录内容
25
macdef
定义宏功能
26
mdelete
删除远程主机上的多个文件
27
mdir
列多个远程目录的内容
28
mget
取多个文件
29
mkdir
在远程主机上建新目录
30
mls
列多个远程目录的内容
31
mode
设置文件传输方式
32
mput
发送多个文件
33
nmap
设置或取消文件名映射机制
34
ntrans
设置或取消文件名字符变换机制
35
open
连接远程主机
36
prompt
触发交互提示功能
37
proxy
在辅助控制连接上执行一条 ftp 命令
38
put
发送一个文件
39
pwd
显示远程机器上的工作目录
40
quit
结束并退出 ftp
41
quote
发送任意 ftp 命令
42
recv
取文件
43
remotehelp
取远程主机的求助信息
44
rename
重新命名远程文件
45
reset
清除应答队列
46
rmdir
删除远程主机的一个目录
47
runique
触发用本地唯一文件名存储功能
48
send
发送一个文件
49
sendport
为每个数据连接触发使用 PORT
50
status
显示当前状态
51
struct
设置文件传输结构
52
sunique
触发远程唯一主机文件存储功能
53
tenex
设置 tenex 文件传输类型
54
trace
触发分组跟踪功能
55
type
设置文件传输类型
56
user
发送新的用户信息
57
verbose
触发 verbose 方式
58
xmkdir
生成远程主机目录
59
xpwd
显示远程主机工作目录
60
xrmdir
删除远程主机目录
61
?
显示本地 ftp 求助信息
不同的系统，上述命令可能有所差异，可用“？”获得帮助！




man ftp :

                                               Commands Reference, Volume 2, d - h
ftp Command
Purpose
       Transfers files between a local and a remote host.
Syntax
       ftp [ -d ] [ -g ] [ -i ] [ -n ] [ -v ] [ -f ] [ -k  realm] [-q[-C]][ HostName  [ Port ] ]
Description
       The ftp command uses the File Transfer Protocol (FTP) to transfer files between the local host and a remote host or between
       two remote hosts.
       The FTP protocol allows data transfer between hosts that use dissimilar file systems. Although the protocol provides a high
       degree of flexibility in transferring data, it does not attempt to preserve file attributes (such as the protection mode or
       modification times of a file) that are specific to a particular file system. Moreover, the FTP protocol makes few
       assumptions about the overall structure of a file system and does not provide or allow such functions as recursively
       copying subdirectories.
            Note: If you are transferring files between systems and need to preserve file attributes or recursively copy
            subdirectories, use the rcp command.
Issuing Subcommands
       At the ftp> prompt, you can enter subcommands to perform tasks such as listing remote directories, changing the current
       local and remote directory, transferring multiple files in a single request, creating and removing directories, and
       escaping to the local shell to perform shell commands. See the Subcommands section for a description of each subcommand.
       If you execute the ftp command and do not specify the HostName parameter for a remote host, the ftp command immediately
       displays the ftp> prompt and waits for an ftp subcommand. To connect to a remote host, execute the open subcommand. When
       the ftp command connects to the remote host, the ftp command then prompts for the login name and password before displaying
       the ftp> prompt again. The ftp command is unsuccessful if no password is defined at the remote host for the login name.
       The ftp command interpreter, which handles all subcommands entered at the ftp> prompt, provides facilities that are not
       available with most file-transfer programs, such as:
       *    Handling file-name parameters to ftp subcommands
       *    Collecting a group of subcommands into a single subcommand macro
       *    Loading macros from a $HOME/.netrc file
       These facilities help simplify repetitive tasks and allow you to use the ftp command in unattended mode.
       The command interpreter handles file-name parameters according to the following rules:
       *    If a - (hyphen) is specified for the parameter, standard input (stdin) is used for read operations and standard output
            (stdout) is used for write operations.
       *    If the preceding check does not apply and file-name expansion is enabled (see the -g flag or the glob subcommand), the
            interpreter expands the file name according to the rules of the C shell. When globbing is enabled and a pattern-
            matching character is used in a subcommand that expects a single file name, results may be different than expected.
            For example, the append and put subcommands perform file-name expansion and then use only the first file name
            generated. Other ftp subcommands, such as cd, delete, get, mkdir, rename, and rmdir, do not perform file-name
            expansion and take the pattern-matching characters literally.
       *    For the get, put, mget, and mput subcommands, the interpreter has the ability to translate and map between different
            local and remote file-name syntax styles (see the case, ntrans, and nmap subcommands) and the ability to modify a
            local file name if it is not unique (see the runique subcommand). Additionally, the ftp command can send instructions
            to a remote ftpd server to modify a remote file name if it is not unique (see the sunique subcommand).
       *    Use double quotes (" ") to specify parameters that include blank characters.
            Note: The ftp command interpreter does not support pipes. It also does not necessarily support all multibyte-character
            file names.
       To end an ftp session when you are running interactively, use the quit or bye subcommand or the End of File (Ctrl-D) key
       sequence at the ftp> prompt. To end a file transfer before it has completed, press the Interrupt key sequence. The default
       Interrupt key sequence is Ctrl-C. The stty command can be used to redefine this key sequence.
       The ftp command normally halts transfers being sent (from the local host to the remote host) immediately. The ftp command
       halts transfers being received (from the remote host to the local host) by sending an FTP ABOR instruction to the remote
       FTP server and discarding all incoming file transfer packets until the remote server stops sending them. If the remote
       server does not support the ABOR instruction, the ftp command does not display the ftp> prompt until the remote server has
       sent all of the requested file. Additionally, if the remote server does something unexpected, you may need to end the local
       ftp process.
Security and Automatic Login
If Standard is the current authentication method:
       The ftp command also handles security by sending passwords to the remote host and permits automatic login, file transfers,
       and logoff.
       If you execute the ftp command and specify the host name (HostName) of a remote host, the ftp command tries to establish a
       connection to the specified host. If the ftp command connects successfully, the ftp command searches for a local
       $HOME/.netrc file in your current directory or home directory. If the file exists, the ftp command searches the file for an
       entry initiating the login process and command macro definitions for the remote host. If the $HOME/.netrc file or automatic
       login entry does not exist or if your system has been secured with the securetcpip command, the ftp command prompts the
       user for a user name and password. The command displays the prompt whether or not the HostName parameter is specified on
       the command line.
            Note: The queuing system does not support multibyte host names.
       If the ftp command finds a $HOME/.netrc automatic login entry for the specified host, the ftp command attempts to use the
       information in that entry to log in to the remote host. The ftp command also loads any command macros defined in the entry.
       In some cases (for example, when the required password is not listed in an automatic login entry), the ftp command prompts
       for the password before displaying the ftp> prompt.
       Once the ftp command completes the automatic login, the ftp command executes the init macro if the macro is defined in the
       automatic login entry. If the init macro does not exist or does not contain a quit or bye subcommand, the ftp command then
       displays the ftp> prompt and waits for a subcommand.
            Note: The remote user name specified either at the prompt or in a $HOME/.netrc file must exist and have a password
            defined at the remote host. Otherwise, the ftp command fails.
If Kerberos 5 is the current authentication method:
       The ftp command will use the extensions to ftp specifications as defined in IETF draft document "draft-ietf-cat-ftpsec-
       09.txt". The FTP security extensions will be implemented using the Generic Security Service API (GSSAPI) security
       mechanism. The GSSAPI provides services independent to the underlying security and communication mechanism. The GSSAPI is
       defined in rfc 1508 and 1509.
       The ftp command will use the AUTH and ADAT commands to authenticate with the ftpd daemon. If both support Kerberos
       authentication, then they will use the local users DCE credentials to authenticate the user on the remote system. If this
       fails and Standard authentication is configured on both systems, the process described above will be used.
       The HostName parameter is the name of the host machine to which files are transferred. The optional Port parameter
       specifies the ID of the port through which to transmit. (The /etc/services file specifies the default port.)
Flags
       -C
            Allows the user to specify that the outgoing file sent using the send_file command must be cached in the Network
            Buffer Cache (NBC). This flag cannot be used unless the -q flag is specified. This flag is only applicable when a file
            is being sent out in the binary mode with no protection.
       -d
            Sends debugging information about ftp command operations to the syslogd daemon. If you specify the -d flag, you must
            edit the /etc/syslog.conf file and add one of the following entries:
            user.info FileName
            OR
            user.debug FileName
            Note: The syslogd daemon debug level includes info level messages.
            If you do not edit the /etc/syslog.conf file, no messages are produced. After changing the /etc/syslog.conf file, run
            the refresh -s syslogd or kill -1 SyslogdPID command to inform the syslogd daemon of the changes to its configuration
            file. For more information about debug levels, refer to the /etc/syslog.conf file. Also, refer to the debug
            subcommand.
       -g
            Disables the expansion of metacharacters in file names. Interpreting metacharacters can be referred to as expanding
            (sometimes called globbing) a file name. See the glob subcommand.
       -i
            Turns off interactive prompting during multiple file transfers. See the prompt, mget, mput, and mdelete subcommands
            for descriptions of prompting during multiple file transfers.
       -n
            Prevents an automatic login on the initial connection. Otherwise, the ftp command searches for a $HOME/.netrc entry
            that describes the login and initialization process for the remote host. See the user subcommand.
       -q
            Allows the user to specify that the send_file subroutine must be used for sending the file on the network. This flag
            is only applicable when a file is being sent out in the binary mode with no protection.
       -v
            Displays all the responses from the remote server and provides data transfer statistics. This display mode is the
            default when the output of the ftp command is to a terminal, such as the console or a display.
            If stdin is not a terminal, the ftp command disables verbose mode unless the user invoked the ftp command with the -v
            flag or issued the verbose subcommand.
       -f
            Causes the credentials to be forwarded. This flag will be ignored if Kerberos 5 is not the current authentication
            method.
       -k realm
            Allows the user to specify the realm of the remote station if it is different from the local systems realm. For these
            purposes, a realm is synonymous with a DCE cell. This flag will be ignored if Kerberos 5 is not the current
            authentication method.
Subcommands
       The following ftp subcommands can be entered at the ftp> prompt. Use double quotes (" ") to specify parameters that include
       blank characters.
       ![Command [Parameters]]
            Invokes an interactive shell on the local host. An optional command, with one or more optional parameters, can be
            given with the shell command.
       $Macro [Parameters]
            Executes the specified macro, previously defined with the macdef subcommand. Parameters are not expanded.
       ?[Subcommand]
            Displays a help message describing the subcommand. If you do not specify a Subcommand parameter, the ftp command
            displays a list of known subcommands.
       account [Password]
            Sends a supplemental password that a remote host may require before granting access to its resources. If the password
            is not supplied with the command, the user is prompted for the password. The password is not displayed on the screen.
       append LocalFile [RemoteFile]
            Appends a local file to a file on the remote host. If the remote file name is not specified, the local file name is
            used, altered by any setting made with the ntrans subcommand or the nmap subcommand. The append subcommand uses the
            current values for form, mode, struct, and type subcommands while appending the file.
       ascii
            Synonym for the type ascii subcommand.
       bell
            Sounds a bell after the completion of each file transfer.
       binary
            Synonym for the type binary subcommand.
       block
            Synonym for the mode block subcommand.
       bye
            Ends the file-transfer session and exits the ftp command. Same as the quit subcommand.
       carriage-control
            Synonym for the form carriage-control subcommand.
       case
            Sets a toggle for the case of file names. When the case subcommand is On, the ftp command changes remote file names
            displayed in all capital letters from uppercase to lowercase when writing them in the local directory. The default is
            Off (so the ftp command writes uppercase remote file names in uppercase in the local directory).
       cd RemoteDirectory
            Changes the working directory on the remote host to the specified directory.
       cdup
            Changes the working directory on the remote host to the parent of the current directory.
       close
            Ends the file-transfer session, but does not exit the ftp command. Defined macros are erased. Same as the disconnect
            subcommand.
       copylocal
            Toggles local copy. copylocal defaults to off. An effort is made by ftp to make sure you do not zero out a file by
            ftp'ing it to itself (eg. same hostname, same pathname). Turning copylocal ON bypasses this check.
       cr
            Strips the carriage return character from a carriage return and line-feed sequence when receiving records during
            ASCII-type file transfers. (The ftp command terminates each ASCII-type record with a carriage return and line feed
            during file transfers.)
            Records on remote hosts with operating systems other than the one you are running can have single line feeds embedded
            in records. To distinguish these embedded line feeds from record delimiters, set the cr subcommand to Off. The cr
            subcommand toggles between On and Off.
       debug [0 | 1]
            Toggles debug record keeping On and Off. Specify debug or debug 1 to print each command sent to the remote host and
            save the restart control file. Specify debug again, or debug 0, to stop the debug record keeping. The Ctrl-C key
            sequence also saves the restart control file.
            Specifying the debug subcommand sends debugging information about ftp command operations to the syslogd daemon. If you
            specify the debug subcommand, you must edit the /etc/syslog.conf file and add one of the following entries:
            user.info FileName
            OR
            user.debug FileName
            Note: The syslogd daemon debug level includes info level messages.
            If you do not edit the /etc/syslog.conf file, no messages are produced. After changing the /etc/syslog.conf file, run
            the refresh -s syslogd or kill -1 SyslogdPID command to inform the syslogd daemon of the changes to its configuration
            file. For more information about debug levels, refer to the /etc/syslog.conf file. Also, refer to the ftp -d flag.
       delete RemoteFile
            Deletes the specified remote file.
       dir [RemoteDirectory][LocalFile]
            Writes a listing of the contents of the specified remote directory (RemoteDirectory) to the specified local file
            (LocalFile). If the RemoteDirectory parameter is not specified, the dir subcommand lists the contents of the current
            remote directory. If the LocalFile parameter is not specified or is a - (hyphen), the dir subcommand displays the
            listing on the local terminal.
       disconnect
            Ends the file-transfer session but does not exit the ftp command. Defined macros are erased. Same as the close
            subcommand.
       ebcdic
            Synonym for the type ebcdic subcommand.
       exp_cmd
            Toggles between conventional and experimental protocol commands. The default is off.
       file
            Synonym for the struct file subcommand.
       form [ carriage-control | non-print | telnet ]
            Specifies the form of the file transfer. The form subcommand modifies the type subcommand to send the file transfer in
            the indicated form. Valid arguments are carriage-control, non-print, and telnet.
              carriage-control
                   Sets the form of the file transfer to carriage-control.
              non-print
                   Sets the form of the file transfer to non-print.
              telnet
                   Sets the form of the file transfer to Telnet. Telnet is a Transmission Control Protocol/Internet Protocol
                   (TCP/IP) protocol that opens connections to a system.
       get RemoteFile [LocalFile]
            Copies the remote file to the local host. If the LocalFile parameter is not specified, the remote file name is used
            locally and is altered by any settings made by the case, ntrans, and nmap subcommands. The ftp command uses the
            current settings for the type, form, mode, and struct subcommands while transferring the file.
       glob
            Toggles file-name expansion (globbing) for the mdelete, mget, and mput subcommands. If globbing is disabled, file-name
            parameters for these subcommands are not expanded. When globbing is enabled and a pattern-matching character is used
            in a subcommand that expects a single file name, results may be different than expected.
            For example, the append and put subcommands perform file-name expansion and then use only the first file name
            generated. Other ftp subcommands, such as cd, delete, get, mkdir, rename, and rmdir, do not perform file-name
            expansion and take the pattern-matching characters literally.
            Globbing for the mput subcommand is done locally in the same way as for the csh command. For the mdelete and mget
            subcommands, each file name is expanded separately at the remote machine and the lists are not merged. The expansion
            of a directory name can be different from the expansion of a file name, depending on the remote host and the ftp
            server.
            To preview the expansion of a directory name, use the mls subcommand:
            mls RemoteFile
            To transfer an entire directory subtree of files, transfer a tar archive of the subtree in binary form, rather than
            using the mget or mput subcommand.
       hash
            Toggles hash sign (#) printing. When the hash subcommand is on, the ftp command displays one hash sign for each data
            block (1024 bytes) transferred.
       help [Subcommand]
            Displays help information. See the ? subcommand.
       image
            Synonym for the type image subcommand.
       lcd [Directory]
            Changes the working directory on the local host. If you do not specify a directory, the ftp command uses your home
            directory.
       local M
            Synonym for the type local M subcommand.
       ls [RemoteDirectory] [LocalFile]
            Writes an abbreviated file listing of a remote directory to a local file. If the RemoteDirectory parameter is not
            specified, the ftp command lists the current remote directory. If the LocalFile parameter is not specified or is a -
            (hyphen), the ftp command displays the listing on the local terminal.
       macdef Macro
            Defines a subcommand macro. Subsequent lines up to a null line (two consecutive line feeds) are saved as the text of
            the macro. Up to 16 macros, containing at most 4096 characters for all macros, can be defined. Macros remain defined
            until either redefined or a close subcommand is executed.
            The $ (dollar sign) and \ (backslash) are special characters in ftp macros. A $ symbol followed by one or more numbers
            is replaced by the corresponding macro parameter on the invocation line (see the $ subcommand). A $ symbol followed by
            the letter i indicates that the macro is to loop, with the $i character combination being replaced by consecutive
            parameters on each pass.
            The first macro parameter is used on the first pass, the second parameter is used on the second pass, and so on. A \
            symbol prevents special treatment of the next character. Use the \ symbol to turn off the special meanings of the $
            and \. (backslash period) symbols.
       mdelete RemoteFiles
            Expands the files specified by the RemoteFiles parameter at the remote host and deletes the remote files.
       mdir [RemoteDirectories LocalFile]
            Expands the directories specified by the RemoteDirectories parameter at the remote host and writes a listing of the
            contents of those directories to the file specified in the LocalFile parameter. If the RemoteDirectories parameter
            contains a pattern-matching character, the mdir subcommand prompts for a local file if none is specified. If the
            RemoteDirectories parameter is a list of remote directories separated by blanks, the last argument in the list must be
            either a local file name or a - (hyphen).
            If the LocalFile parameter is - (hyphen), the mdir subcommand displays the listing on the local terminal. If
            interactive prompting is on (see the prompt subcommand), the ftp command prompts the user to verify that the last
            parameter is a local file and not a remote directory.
       mget RemoteFiles
            Expands the RemoteFiles parameter at the remote host and copies the indicated remote files to the current directory on
            the local host. See the glob subcommand for more information on file-name expansion. The remote file names are used
            locally and are altered by any settings made by the case, ntrans, and nmap subcommands. The ftp command uses the
            current settings for the form, mode, struct, and type subcommands while transferring the files.
       mkdir [RemoteDirectory]
            Creates the directory specified in the RemoteDirectory parameter on the remote host.
       mls [RemoteDirectories LocalFile]
            Expands the directories specified in the RemoteDirectories parameter at the remote host and writes an abbreviated file
            listing of the indicated remote directories to a local file. If the RemoteDirectories parameter contains a pattern-
            matching character, the mls subcommand prompts for a local file if none is specified. If the RemoteDirectories
            parameter is a list of remote directories separated by blanks, the last argument in the list must be either a local
            file name or a - (hyphen).
            If the LocalFile parameter is - (hyphen), the mls subcommand displays the listing on the local terminal. If
            interactive prompting is on (see the prompt subcommand), the ftp command prompts the user to verify that the last
            parameter is a local file and not a remote directory.
       mode [ stream | block ]
            Sets file-transfer mode. If an argument is not supplied, the default is stream.
              block
                   Sets the file-transfer mode to block.
              stream
                   Sets the file-transfer mode to stream.
       modtime
            Shows the last modification time of the specified file on the remote machine. If the ftp command is not connected to a
            host prior to execution, the modtime subcommand terminates with an error message. The ftp command ignores parameter
            beyond the first parameter. If the FileName parameter is not specified, the ftp command prompts for a file name. If no
            file name is given, the ftp command sends a usage message to standard output and terminates the subcommand.
            If the name specified by the FileName parameter exists on the remote host, and the name specifies a file, then the ftp
            command sends a message containing the last modification time of the file to standard output and terminates the
            subcommand. If FileName specifies a directory, the ftp command sends an error message to standard output and
            terminates the subcommand.
            Note: The modtime subcommand interprets metacharacters when allowed.
       mput [LocalFiles]
            Expands the files specified in the LocalFiles parameter at the local host and copies the indicated local files to the
            remote host. See the glob subcommand for more information on file-name expansion. The local file names are used at the
            remote host and are altered by any settings made by the ntrans and nmap subcommands. The ftp command uses the current
            settings for the type, form, mode, and struct subcommands while transferring the files.
       nlist [RemoteDirectory][LocalFile]
            Writes a listing of the contents of the specified remote directory (RemoteDirectory) to the specified local file
            (LocalFile). If the RemoteDirectory parameter is not specified, the nlist subcommand lists the contents of the current
            remote directory. If the LocalFile parameter is not specified or is a - (hyphen), the nlist subcommand displays the
            listing on the local terminal.
       nmap [InPattern OutPattern]
            Turns the file-name mapping mechanism On or Off. If no parameters are specified, file-name mapping is turned off. If
            parameters are specified, source file names are mapped for the mget and mput subcommands and for the get and put
            subcommands when the destination file name is not specified. This subcommand is useful when the local and remote hosts
            use different file-naming conventions or practices. Mapping follows the pattern set by the InPattern and OutPattern
            parameters.
            The InPattern parameter specifies the template for incoming file names, which may have already been processed
            according to the case and ntrans settings. The template variables $1 through $9 can be included in the InPattern
            parameter. All characters in the InPattern parameter, other than the $ (dollar sign) and the \$ (backslash, dollar
            sign), are treated literally and are used as delimiters between InPattern variables. For example, if the InPattern
            parameter is $1.$2 and the remote file name is mydata.dat, the value of $1 is mydata and the value of $2 is dat.
            The OutPattern parameter determines the resulting file name. The variables $1 through $9 are replaced by their values
            as derived from the InPattern parameter, and the variable $0 is replaced by the original file name. Additionally, the
            sequence [Sequence1,Sequence2] is replaced by the value of Sequence1, if Sequence1 is not null; otherwise, it is
            replaced by the value of Sequence2. For example, the subcommand:
            nmap $1.$2.$3 [$1,$2].[$2,file]
            would yield myfile.data from myfile.data or myfile.data.old, myfile.file from myfile, and myfile.myfile from .myfile.
            Use the \ (backslash) symbol to prevent the special meanings of the $ (dollar sign), [ (left bracket), ] (right
            bracket), and , (comma) in the OutPattern parameter.
       non-print
            Synonym for the form non-print subcommand.
       ntrans [InCharacters [OutCharacters]]
            Turns the file-name character translation mechanism On and Off. If no parameters are specified, character translation
            is turned off. If parameters are specified, characters in source file names are translated for mget and mput
            subcommands and for get and put subcommands when the destination file name is not specified.
            This subcommand is useful when the local and remote hosts use different file-naming conventions or practices.
            Character translation follows the pattern set by the InCharacters and OutCharacters parameter. Characters in a source
            file name matching characters in the InCharacters parameter are replaced by the corresponding characters in the
            OutCharacters parameter.
            If the string specified by the InCharacters parameter is longer than the string specified by the OutCharacters
            parameter, the characters in the InCharacters parameter are deleted if they have no corresponding character in the
            OutCharacters parameter.
       open HostName [Port]
            Establishes a connection to the FTP server at the host specified by the HostName parameter. If the optional port
            number is specified, the ftp command attempts to connect to a server at that port. If the automatic login feature is
            set (that is, the -n flag was not specified on the command line), the ftp command attempts to log in the user to the
            FTP server.
            You must also have a $HOME/.netrc file with the correct information in it and the correct permissions set. The .netrc
            file must be in your home directory.
       passive
            Toggles passive mode for file transfers. When a file transfer command (such as get, mget, put, or mput) is invoked
            with passive mode off, the ftp server opens a data connection back to the client. In passive mode, the client opens
            data connections to the server when sending or receiving data.
       private
            Sets the protection level to "private." At this level, data is integrity and confidentially protected.
       prompt
            Toggles interactive prompting. If interactive prompting is on (the default), the ftp command prompts for verification
            before retrieving, sending, or deleting multiple files during the mget, mput, and mdelete subcommands. Otherwise, the
            ftp command acts accordingly on all files specified.
       protect
            This command returns the current level of protection.
       proxy [Subcommand]
            Executes an ftp command on a secondary control connection. This subcommand allows the ftp command to connect
            simultaneously to two remote FTP servers for transferring files between the two servers. The first proxy subcommand
            should be an open subcommand to establish the secondary control connection. Enter the proxy ? subcommand to see the
            other ftp subcommands that are executable on the secondary connection.
            The following subcommands behave differently when prefaced by the proxy subcommand:
              *    The open subcommand does not define new macros during the automatic login process.
              *    The close subcommand does not erase existing macro definitions.
              *    The get and mget subcommands transfer files from the host on the primary connection to the host on the
                   secondary connection.
              *    The put, mput, and append subcommands transfer files from the host on the secondary connection to the host on
                   the primary connection.
              *    The restart subcommand can be handled by the proxy command.
              *    The status subcommand displays accurate information.
            File transfers require that the FTP server on the secondary connection must support the PASV (passive) instruction.
       put LocalFile [RemoteFile]
            Stores a local file on the remote host. If you do not specify the RemoteFile parameter, the ftp command uses the local
            file name to name the remote file, and the remote file name is altered by any settings made by the ntrans and nmap
            subcommands. The ftp command uses the current settings for the type, form, mode, and struct subcommands while
            transferring the files.
       pwd
            Displays the name of the current directory on the remote host.
       quit
            Closes the connection and exits the ftp command. Same as the bye subcommand.
       quote String
            Sends the string specified by the String parameter verbatim to the remote host. Execute the remotehelp or quote help
            subcommand to display a list of valid values for the String parameter.
            Note: "Quoting" commands that involve data transfers can produce unpredictable results.
       record
            Synonym for the struct record subcommand.
       recv RemoteFile [LocalFile]
            Copies the remote file to the local host. Same as the get subcommand.
       reinitialize
            Reinitializes an FTP session by flushing all I/O and allowing transfers to complete. Resets all defaults as if a user
            had just started an FTP session without logging in to a remote host.
       remotehelp [Subcommand]
            Requests help from the remote FTP server.
       rename FromName ToName
            Renames a file on the remote host.
       reset
            Clears the reply queue. This subcommand resynchronizes the command parsing.
       restart get | put | append
            Restarts a file transfer at the point where the last checkpoint was made. To run successfully, the subcommand must be
            the same as the aborted subcommand, including structure, type, and form. Valid arguments are get, put, and append.
       rmdir RemoteDirectory
            Removes the remote directory specified by the RemoteDirectory parameter at the remote host.
       runique
            (ReceiveUnique) Toggles the facility for creating unique file names for local destination files during get and mget
            subcommands. If this facility is Off (the default), the ftp command overwrites local files. Otherwise, if a local file
            has the same name as that specified for a local destination file, the ftp command modifies the specified name of the
            local destination file with .1. If a local file is already using the new name, the ftp command appends the postfix .2
            to the specified name. If a local file is already using this second name, the ftp command continues incrementing the
            postfix until it either finds a unique file name or reaches .99 without finding a unique file name. If the ftp command
            cannot find a unique file name, the ftp command reports an error and the transfer does not take place. Note that the
            runique subcommand does not affect local file names generated from a shell command.
       safe
            Sets the protection level to "safe." At this level, data is integrity protected.
       send LocalFile [RemoteFile]
            Stores a local file on the remote host. Same as the put subcommand.
       sendport
            Toggles the use of FTP PORT instructions. By default, the ftp command uses a PORT instruction when establishing a
            connection for each data transfer. When the use of PORT instructions is disabled, the ftp command does not use PORT
            instructions for data transfers. The PORT instruction is useful when dealing with FTP servers that ignore PORT
            instructions while incorrectly indicating the instructions have been accepted.
       site Args
            Displays or sets the idle time-out period, displays or sets the file-creation umask, or changes the permissions of a
            file, using the chmod command. Possible values for the Args parameter are umask and chmod.
       size RemoteFile
            Displays the size in bytes of the remote file specified by the RemoteFile parameter.
       status
            Displays the current status of the ftp command as well as the status of the subcommands.
       stream
            Synonym for the mode stream subcommand.
       struct [ file | record ]
            Sets the data transfer structure type. Valid arguments are file and record.
              file
                   Sets the data-transfer structure type to file.
              record
                   Sets the data-transfer structure type to record.
       sunique
            (Send/Store Unique) Toggles the facility for creating unique file names for remote destination files during put and
            mput subcommands. If this facility is off (the default), the ftp command overwrites remote files. Otherwise, if a
            remote file has the same name as that specified for a remote destination file, the remote FTP server modifies the name
            of the remote destination file. Note that the remote server must support the STOU instruction.
       system
            Shows the type of operating system running on the remote machine.
       telnet
            Synonym for the form telnet subcommand.
       tenex
            Synonym for the type tenex subcommand.
       trace
            Toggles packet tracing.
       type [ ascii | binary | ebcdic | image | local M | tenex ]
            Sets the file-transfer type. Valid arguments are ascii, binary, ebcdic, image, local M, and tenex. If an argument is
            not specified, the current type is printed. The default type is ascii; the binary type can be more efficient than
            ascii.
              ascii
                   Sets the file-transfer type to network ASCII. This type is the default. File transfer may be more efficient
                   with binary-image transfer. See the binary argument for further information.
              binary
                   Sets the file-transfer type to binary image. This type can be more efficient than an ASCII transfer.
              ebcdic
                   Sets the file-transfer type to EBCDIC.
              image
                   Sets the file-transfer type to binary image. This type can be more efficient than an ASCII transfer.
              local M
                   Sets the file-transfer type to local. The M parameter defines the decimal number of bits per machine word. This
                   parameter does not have a default.
              tenex
                   Sets the file-transfer type to that needed for TENEX machines.
       user User [Password] [Account]
            Identifies the local user (User) to the remote FTP server. If the Password or Account parameter is not specified and
            the remote server requires it, the ftp command prompts for the password or account locally. If the Account parameter
            is required, the ftp command sends it to the remote server after the remote login process completes.
            Note: Unless automatic login is disabled by specifying the -n flag on the command line, the ftp command sends the
            User, Password, and Account parameters automatically for the initial connection to the remote server. You also need a
            .netrc file in your home directory in order to issue an automatic login.
       verbose
            Toggles verbose mode. When the verbose mode is on (the default), the ftp command displays all responses from the
            remote FTP server. Additionally, the ftp command displays statistics on all file transfers when the transfers
            complete.
Examples
       1    To invoke the ftp command, log in to the system canopus, display local help information, display remote help
            information, display status, toggle the bell, prompt, runique, trace, and verbose subcommands, and then quit, enter:
            $ ftp canopus
            Connected to canopus.austin.century.com.
            220 canopus.austin.century.com FTP server (Version 4.1 Sat Nov 23 12:52:09 CST 1991) ready.
            Name (canopus:eric): dee
            331 Password required for dee.
            Password:
            230 User dee logged in.
            ftp> help
            Commands may be abbreviated. Commands are:
            !          delete          mdelete          proxy          runique
            $          debug           mdir             sendport       send
            account    dir             mget             put            size
            append     disconnect      mkdir            pwd            status
            ascii      form            mls              quit           struct
            bell       get             mode             quote          sunique
            binary     glob            modtime          recv           system
            bye        hash            mput             remotehelp     tenex
            case       help            nmap             rstatus        trace
            cd         image           nlist            rhelp          type
            cdup       lcd             ntrans           rename         user
            close      ls              open             reset          verbose
            cr         macdef          prompt           rmdir          ?
            clear      private         protect          safe
            ftp> remotehelp
            214-The following commands are recognized(* =>'s unimplemented).
             USER   PORT   RETR   MSND*  ALLO   DELE   SITE*  XMKD   CDUP
             PASS   PASV   STOR   MSOM*  REST*  CWD    STAT*  RMD    XCUP
             ACCT*  TYPE   APPE   MSAM*  RNFR   XCWD   HELP   XRMD   STOU
             REIN*  STRU   MLFL*  MRSQ*  RNTO   LIST   NOOP   PWD
             QUIT   MODE   MAIL*  MRCP*  ABOR   NLST   MKD    XPWD
             AUTH   ADAT   PROT   PBSZ   MIC    ENC    CCC
            214 Direct comments to
ftp-bugs@canopus.austin.century.com
.
            ftp> status
            Connected to canopus.austin.century.com.
            No proxy connection.
            Mode: stream; Type: ascii; Form: non-print; Structure: file
            Verbose: on; Bell: off; Prompting: on; Globbing: on
            Store unique: off; Receive unique: off
            Case: off; CR stripping: on
            Ntrans: off
            Nmap: off
            Hash mark printing: off; Use of PORT cmds: on
            ftp> bell
            Bell mode on.
            ftp> prompt
            Interactive mode off.
            ftp> runique
            Receive unique on.
            ftp> trace
            Packet tracing on.
            ftp> verbose
            Verbose mode off.
            ftp> quit
            $
       2    To invoke the ftp command, log in to the system canopus, print the working directory, change the working directory,
            set the file transfer type to ASCII, send a local file to the remote host, change the working directory to the parent
            directory, and then quit, enter:
            $ ftp canopus
            Connected to canopus.austin.century.com.
            220 canopus.austin.century.com FTP server (Version 4.1 Sat Nov 23 12:52:09 CST 1991) ready.
            Name (canopus:eric): dee
            331 Password required for dee.
            Password:
            230 User dee logged in.
            ftp> pwd
            257 "/home/dee" is current directory.
            ftp> cd desktop
            250 CWD command successful.
            ftp> type ascii
            200 Type set to A.
            ftp> send typescript
            200 PORT command successful.
            150 Opening data connection for typescript (128.114.4.99,1412).
            226 Transfer complete.
            ftp> cdup
            250 CWD command successful.
            ftp> bye
            221 Goodbye.
            $
       3    To invoke the ftp command with automatic logon (using the .netrc file), open a session with the system canopus, log
            in, change the working directory to the parent directory, print the working directory, list the contents of the
            current directory, delete a file, write a listing of the contents of the current directory to a local file, close the
            session, and then quit, enter:
            $ ftp canopus
            Connected to canopus.austin.century.com.
            220 canopus.austin.century.com FTP server (Version 4.1 Sat Nov 23 12:52:09 CST 1991) ready.
            331 Password required for dee.
            230 User dee logged in.
            ftp> cdup
            250 CWD command successful.
            ftp> pwd
            257 "/home" is current directory.
            ftp> dir
            200 PORT command successful.
            150 Opening data connection for /usr/bin/ls (128.114.4.99,1407)
            (0 bytes).
            total 104
            drwxr-xr-x   2 system        32 Feb 23 17:55 bin
            Drwxr-xr-x  26 rios        4000 May 30 17:18 bin1
            drwxr-xr-x   2 system        32 Feb 23 17:55 books
            drwxrwxrwx  18 rios        1152 Jun  5 13:41 dee
            -r--r--r--   1 system      9452 May 17 12:21 filesystems
            drwxr-xr-x   2 system        32 Feb 23 17:55 jim
            drwxr-xr-x   5 system        80 Feb 23 17:55 krs
            drwxrwxrwx   2 rios       16432 Feb 23 17:36 lost+found
            -rwxr-xr-x   1 rios        3651 May 24 16:45 oldmail
            drwxr-xr-x   2 system       256 Feb 23 17:55 pubserv
            drwxrwxrwx   2 system       144 Feb 23 17:55 rein989
            drwxr-xr-x   2 system       112 Feb 23 17:55 reinstall
            226 Transfer complete.
            ftp> delete oldmail
            250 DELE command successful.
            ftp> mdir /home/dee/bin binlist
            output to local-file: binlist? y
            200 PORT command successful.
            150 Opening data connection for /usr/bin/ls (128.114.4.99,1408) (0 bytes).
            226 Transfer complete.
            ftp> close
            221 Goodbye.
            ftp> quit
            $
Files
       /usr/samples/tcpip/netrc
            Contains the sample .netrc file.
       /etc/syslog.conf
            Contains configuration information for the syslogd daemon.
Related Information
       The csh command, kill command, rcp command, refresh command, rlogin command, rsh command, stty command, telnet command,
       tftp command.
       The ftpd daemon, the syslogd daemon.
       The .netrc file format.
       Copying Files Using the ftp Command in AIX 5L Version 5.3 System User's Guide: Communications and Networks.
       Network Overview in AIX 5L Version 5.3 System Management Guide: Communications and Networks.
       Secure Rcmds in AIX 5L Version 5.3 System User's Guide: Communications and Networks.
       Network Option Tunable Parameters in AIX 5L Version 5.3 Performance Management Guide.


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