script和mkfifo指令组合,太神奇了..

star33375249

在ubuntu/或者其他linux下运行,script screen.log,记录屏幕信息到screen.log里,一直记录到你exit为止,记录屏幕log的好方法...

1. root@ubuntu2:/# script screen.log
   
2. Script started, file is screen.log
   
3. root@ubuntu2:/# ls -ltr
   
4. total 76
   
5. drwxr-xr-x  2 root root  4096 Jun 13 22:14 mnt
   
6. drwx------  2 root root 16384 Sep 10 10:08 lost+found
   
7. lrwxrwxrwx  1 root root    11 Sep 10 10:08 cdrom -> media/cdrom
   
8. drwxr-xr-x  4 root root  4096 Sep 10 10:08 media
   
9. drwxr-xr-x  2 root root  4096 Sep 10 10:09 srv
   
10. drwxr-xr-x  2 root root  4096 Sep 10 10:09 initrd
    
11. lrwxrwxrwx  1 root root    29 Sep 10 10:13 vmlinuz -> boot/vmlinuz-2.6.24-19-server
    
12. lrwxrwxrwx  1 root root    32 Sep 10 10:13 initrd.img -> boot/initrd.img-2.6.24-19-server
    
13. drwxr-xr-x  2 root root  4096 Sep 10 10:42 bin
    
14. drwxr-xr-x 13 root root  4096 Sep 10 10:42 lib
    
15. drwxr-xr-x  2 root root  4096 Sep 10 10:44 sbin
    
16. drwxr-xr-x  3 root root  4096 Sep 10 10:44 boot
    
17. drwxr-xr-x  3 root root  4096 Sep 10 10:44 home
    
18. drwxr-xr-x  2 root root  4096 Sep 10 11:54 root
    
19. drwxr-xr-x 11 root root  4096 Sep 10 12:24 usr
    
20. dr-xr-xr-x 73 root root     0 Sep 12 22:06 proc
    
21. drwxr-xr-x 12 root root     0 Sep 12 22:06 sys
    
22. drwxr-xr-x 10 root root 13700 Sep 12 22:06 dev
    
23. drwxr-xr-x 15 root root  4096 Sep 17 14:45 var
    
24. drwxr-xr-x 76 root root  4096 Sep 17 14:46 etc
    
25. -rw-r--r--  1 root root     0 Sep 17 15:09 #hello.sh#
    
26. drwxrwxrwt  4 root root  4096 Sep 18 08:31 tmp
    
27. drwxr-xr-x  4 root root  4096 Sep 23 21:40 opt
    
28. -rw-r--r--  1 root root     0 Sep 24 21:34 screen.log
    
29. root@ubuntu2:/# exit
    
30. exit
    
31. Script done, file is screen.log
    
32. root@ubuntu2:/# cat screen.log
    
33. Script started on Wed Sep 24 21:34:52 2008
    
34. root@ubuntu2:/# ls -ltr
    
35. total 76
    
36. drwxr-xr-x  2 root root  4096 Jun 13 22:14 mnt
    
37. drwx------  2 root root 16384 Sep 10 10:08 lost+found
    
38. lrwxrwxrwx  1 root root    11 Sep 10 10:08 cdrom -> media/cdrom
    
39. drwxr-xr-x  4 root root  4096 Sep 10 10:08 media
    
40. drwxr-xr-x  2 root root  4096 Sep 10 10:09 srv
    
41. drwxr-xr-x  2 root root  4096 Sep 10 10:09 initrd
    
42. lrwxrwxrwx  1 root root    29 Sep 10 10:13 vmlinuz -> boot/vmlinuz-2.6.24-19-server
    
43. lrwxrwxrwx  1 root root    32 Sep 10 10:13 initrd.img -> boot/initrd.img-2.6.24-19-server
    
44. drwxr-xr-x  2 root root  4096 Sep 10 10:42 bin
    
45. drwxr-xr-x 13 root root  4096 Sep 10 10:42 lib
    
46. drwxr-xr-x  2 root root  4096 Sep 10 10:44 sbin
    
47. drwxr-xr-x  3 root root  4096 Sep 10 10:44 boot
    
48. drwxr-xr-x  3 root root  4096 Sep 10 10:44 home
    
49. drwxr-xr-x  2 root root  4096 Sep 10 11:54 root
    
50. drwxr-xr-x 11 root root  4096 Sep 10 12:24 usr
    
51. dr-xr-xr-x 73 root root     0 Sep 12 22:06 proc
    
52. drwxr-xr-x 12 root root     0 Sep 12 22:06 sys
    
53. drwxr-xr-x 10 root root 13700 Sep 12 22:06 dev
    
54. drwxr-xr-x 15 root root  4096 Sep 17 14:45 var
    
55. drwxr-xr-x 76 root root  4096 Sep 17 14:46 etc
    
56. -rw-r--r--  1 root root     0 Sep 17 15:09 #hello.sh#
    
57. drwxrwxrwt  4 root root  4096 Sep 18 08:31 tmp
    
58. drwxr-xr-x  4 root root  4096 Sep 23 21:40 opt
    
59. -rw-r--r--  1 root root     0 Sep 24 21:34 screen.log
    
60. root@ubuntu2:/# exit
    
61. exit
    
62. 
    
63. Script done on Wed Sep 24 21:35:04 2008

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已经找到了解决方法,异常退出也没有问题,仍然记录log,需要加上参数,script -f ido.log,如果在一个终端上使用mkfifo ido.log;script -f ido.log 然后在另一个终端登录,找到这个ido.log文件,你tail -f 就会滚动输出你操作的内容..这个非常方便...

关于mkfifo的使用,这里有一些使用方法,如果愿意深入研究这个指令,就man它...

下面是unbuntu 2.6.24-19-server 上的  script 手册...

1. nova@unbuntu:~$ more manscript
   
2. SCRIPT(1)                 BSD General Commands Manual                SCRIPT(1)
   
3. 
   
4. NAME
   
5.      script - make typescript of terminal session
   
6. 
   
7. SYNOPSIS
   
8.      script [-a] [-c COMMAND] [-f] [-q] [-t] [file]
   
9. 
   
10. DESCRIPTION
    
11.      Script makes a typescript of everything printed on your terminal.  It is
    
12.      useful for students who need a hardcopy record of an interactive session
    
13.      as proof of an assignment, as the typescript file can be printed out
    
14.      later with lpr(1).
    
15. 
    
16.      If the argument file is given, script saves all dialogue in file.  If no
    
17.      file name is given, the typescript is saved in the file typescript.
    
18. 
    
19.      Options:
    
20. 
    
21.      -a      Append the output to file or typescript, retaining the prior con-
    
22.              tents.
    
23. 
    
24.      -c COMMAND
    
25.              Run the COMMAND rather than an interactive shell.  This makes it
    
26.              easy for a script to capture the output of a program that behaves
    
27.              differently when its stdout is not a tty.
    
28. 
    
29.      -f      Flush output after each write. This is nice for telecooperation:
    
30.              One person does `mkfifo foo; script -f foo' and another can
    
31.              supervise real-time what is being done using `cat foo'.
    
32. 
    
33.      -q      Be quiet.
    
34. 
    
35.      -t      Output timing data to standard error. This data contains two
    
36.              fields, separated by a space. The first field indicates how much
    
37.              time elapsed since the previous output. The second field indi-
    
38.              cates how many characters were output this time. This information
    
39.              can be used to replay typescripts with realistic typing and out-
    
40.              put delays.
    
41. 
    
42.      The script ends when the forked shell exits (a control-D to exit the
    
43.      Bourne shell (sh(1)), and exit, logout or control-d (if ignoreeof is not
    
44.      set) for the C-shell, csh(1)).
    
45. 
    
46.      Certain interactive commands, such as vi(1), create garbage in the type-
    
47.      script file.  Script works best with commands that do not manipulate the
    
48.      screen, the results are meant to emulate a hardcopy terminal.
    
49. 
    
50. ENVIRONMENT
    
51.      The following environment variable is utilized by script:
    
52. 
    
53.      SHELL  If the variable SHELL exists, the shell forked by script will be
    
54.             that shell. If SHELL is not set, the Bourne shell is assumed.
    
55.             (Most shells set this variable automatically).
    
56. 
    
57. SEE ALSO
    
58.      csh(1) (for the history mechanism), scriptreplay(1).
    
59. 
    
60. HISTORY
    
61.      The script command appeared in 3.0BSD.
    
62. 
    
63. BUGS
    
64.      Script places everything in the log file, including linefeeds and
    
65.      backspaces.  This is not what the naive user expects.
    
66. 
    
67. AVAILABILITY
    
68.      The script command is part of the util-linux-ng package and is available
    
69.      from [url]ftp://ftp.kernel.org/pub/linux/utils/util-linux-ng/.[/url]
    
70. 
    
71. Linux                            July 30, 2000                           Linux
    

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下面是视频,看不明白的,不愿意看的,直接看视频,省事...


更多内容请看...http://www.unix-center.net/bbs/v ... &extra=page%3D1

[ 本帖最后由 star33375249 于 2008-9-26 14:09 编辑 ]

camby

还不错，呵呵

galford433

这个……怎么感觉拿来干坏事很不错

star33375249

我理解了你的想法,呵呵.在别人的ENV下,弄个,然后我们在一帮偷偷的cat????..哈...

[ 本帖最后由 star33375249 于 2008-9-26 16:24 编辑 ]

li2002

这个需要同时有人cat，如果没人cat，script不就一直挂在那里吗

waker

这个fifo有什么用？普通文件不可以 tail -f ?

star33375249

这样的方式是挂着丫..你也可以不cat  script -f ido.log 然后就可以在你写的时候刷新output到你的文件中,相当于操作log...

star33375249

tail -f 也可以的..功能一样...


fifo 和我们说的管道是一样的,一个是有名管道,一个是无名管道,关键是看是是否释放... 我是这么理解的,不知道对否..

[ 本帖最后由 star33375249 于 2008-9-26 20:49 编辑 ]

to407

Fifo和Pipe字义差别在于是否“Named”(命名),

Fifo可以存在于两个无关的进程之间

hylove

非常有用的操作,server 上要是有screen, 直接screen  -x 也行呀