Question

如何将Linux命令的输出与命令一起重定向到文件？

与ls -l >> test.txt类似，只会将输出重定向，而不是将命令重定向到文件。我是新手

Answer 1

使用script命令，您可以记录，这将保存整个终端会话，直到您exit该程序为止，例如

执行的命令

akshay@db-3325:/tmp$ script test.log
Script started, file is test.log
akshay@db-3325:/tmp$ cal
     March 2017       
Su Mo Tu We Th Fr Sa  
          1  2  3  4  
 5  6  7  8  9 10 11  
12 13 14 15 16 17 18  
19 20 21 22 23 24 25  
26 27 28 29 30 31     

akshay@db-3325:/tmp$ uptime
 23:43:16 up  4:31,  1 user,  load average: 0.78, 0.67, 0.44
akshay@db-3325:/tmp$ w
 23:43:18 up  4:31,  1 user,  load average: 0.72, 0.66, 0.43
USER     TTY      FROM             LOGIN@   IDLE   JCPU   PCPU WHAT
akshay   tty7     :0               19:12    4:31m  7:49   0.28s /sbin/upstart --user
akshay@db-3325:/tmp$ whoami
akshay
akshay@db-3325:/tmp$ echo 'something'
something
akshay@db-3325:/tmp$ exit
exit
Script done, file is test.log

这是记录的内容：

akshay@db-3325:/tmp$ cat test.log 
Script started on Thursday 16 March 2017 11:43:06 PM IST
akshay@db-3325:/tmp$ cal
     March 2017       
Su Mo Tu We Th Fr Sa  
          1  2  3  4  
 5  6  7  8  9 10 11  
12 13 14 15 16 17 18  
19 20 21 22 23 24 25  
26 27 28 29 30 31     

akshay@db-3325:/tmp$ uptime
 23:43:16 up  4:31,  1 user,  load average: 0.78, 0.67, 0.44
akshay@db-3325:/tmp$ w
 23:43:18 up  4:31,  1 user,  load average: 0.72, 0.66, 0.43
USER     TTY      FROM             LOGIN@   IDLE   JCPU   PCPU WHAT
akshay   tty7     :0               19:12    4:31m  7:49   0.28s /sbin/upstart --user
akshay@db-3325:/tmp$ whoami
akshay
akshay@db-3325:/tmp$ echo 'something'
something
akshay@db-3325:/tmp$ exit
exit

Script done on Thursday 16 March 2017 11:43:38 PM IST

Answer 2

如果您不想使用script实用程序，可以使用set -x bash功能：

$ exec 2>log; set -x; pwd >&2;set +x;exec 2>&1;cat log
+ pwd
/home/gv/Desktop/PythonTests
+ set +x

或者您也可以使用自定义函数而不会出现棘手的重定向：

$ function logme { a="$@"; echo $a >log ; "$@" >>log 2>&1;cat log;return; }
$ logme pwd  
pwd
/home/gv/Desktop/PythonTests

PS：您可以将输出发送到另一个文件，即logme pwd＆gt;＆gt;一般日志

最后，你可以像bellow一样构建一个自定义脚本，也可以使用set -v（verbose）：

exec 3>&2 2>log 4<log 
set -vx
"$@" >&2
set +vx 
cat <&4 >&1  # Optionally combine with |tail -n +2 |head -n -2 
#The cat is used to display in command line what is logged inside the file.

命令重定向

2 个答案: