怎样去除文件里面的隐藏字符？？？？？？？help!!!

昭襄王

A for all
cat --help

expert1

回复 29# 论坛ID


    -i

论坛ID

回复 32# expert1


    原来是打错了，尴尬阿

vbirding

回复 24# expert1


    同时按住ctrl +v，然后释放v，再按下大键盘的数字6，最后同时释放、回车就出来了吧

昭襄王

i for in place

welcome008

回复  expert1


    同时按住ctrl +v，然后释放v，再按下大键盘的数字6，最后同时释放、回车就出来了吧 ...
vbirding 发表于 2010-08-27 15:40

    靠，说的太复杂了吧

直接说同时按下ctrl v m就ok了

blackold

dos格式啊。

jiwang1980

我啥也不说了

xborant

faq
打个标，以后建faq的时候可能用得上

xiaopan3322

回复 1# ssxy2009


    这玩意是windows下的carriage return ( ^M )
    想移调，直接用 dos2unix 呗
    要么直接vi里面改：

1. :1,$s/^M//g

复制代码

或者

1. :%s/^M//g

复制代码

算了，干脆copy paste一下怎么转换windows和unix格式的文本文件吧：

How to convert between Unix and Windows text files?

The format of Windows and Unix text files differs slightly. In Windows, lines end with both the line feed and carriage return ASCII characters, but Unix uses only a line feed. As a consequence, some Windows applications will not show the line breaks in Unix-format files. Likewise, Unix programs may display the carriage returns in Windows text files with Ctrl-m ( ^M ) characters at the end of each line.

There are many ways to solve this problem. This document provides instructions for using FTP, screen capture, unix2dos and dos2unix, tr, awk, Perl, and vi to do the conversion. To use these utilities, the files you are converting must be on a Unix computer.

Note: In the instructions below, replace unixfile.txt with the name of your Unix file, and replace winfile.txt with the Windows filename..

FTP

When using an FTP program to move a text file between Unix and Windows, be sure the file is transferred in ASCII format, so the document is transformed into a text format appropriate for the host. Some FTP programs, especially graphical applications (e.g., Hummingbird FTP), do this automatically. If you are using command line FTP, before you begin the transfer, enter:
ascii

Note: You need to use a client that supports secure FTP to transfer files to and from Indiana University's central systems. For more, see At IU, what SSH/SFTP clients are supported and where can I get them?

dos2unix and unix2dos

On Solaris systems, the utilities dos2unix and unix2dos are available for converting files from the Unix command line.

To convert a Windows file to a Unix file, enter:
dos2unix winfile.txt unixfile.txt

To convert a Unix file to Windows, enter:
unix2dos unixfile.txt winfile.txt

Note: These utilities are available only on Solaris systems.

tr

You can use tr to remove all carriage returns and Ctrl-z ( ^Z ) characters from a Windows file:
tr -d '\15\32' < winfile.txt > unixfile.txt

However, you cannot use tr to convert a document from Unix format to Windows.
awk

To use awk to convert a Windows file to Unix, enter:
awk '{ sub("\r$", ""); print }' winfile.txt > unixfile.txt

To convert a Unix file to Windows, enter:
awk 'sub("$", "\r")' unixfile.txt > winfile.txt

Older versions of awk do not include the sub function. In such cases, use the same command, but replace awk with gawk or nawk.
Perl


To convert a Windows text file to a Unix text file using Perl, enter:
perl -p -e 's/\r$//' < winfile.txt > unixfile.txt

To convert from a Unix text file to a Windows text file, enter:
perl -p -e 's/\n/\r\n/' < unixfile.txt > winfile.txt

You must use single quotation marks in either command line. This prevents your shell from trying to evaluate anything inside.
vi


In vi, you can remove carriage return ( ^M ) characters with the following command:
:1,$s/^M//g

Note: To input the ^M character, press Ctrl-v , and then press Enter or return.

In vim, use :set ff=unix to convert to Unix; use :set ff=dos to convert to Windows.