与输出 shell 一起执行的重定向命令

Question

我想将执行的命令与输出一起重定向到文件。

例如：#ls >ls_out.txt

ls_out.txt 应该是这样的：

---

ls

文件1 文件2

---

谢谢！

Answer 1

您可以使用“脚本”命令：如下所示：

localhost:test_sf user1$ ls
file1   file2   file3
localhost:test_sf user1$ script ls_out.txt  #starting script command ls_out.txt will contain output
Script started, output file is ls_out.txt
bash-3.2$ ls 
file1       file2       file3       ls_out.txt
bash-3.2$ exit
exit

Script done, output file is ls_out.txt
===================================================================================
localhost:test_sf user1$ cat ls_out.txt  #verify the contents now.
Script started on Wed Dec 18 12:05:23 2013
bash-3.2$ ls 
file1       file2       file3       ls_out.txt
bash-3.2$ exit
exit

您只需摆脱“bash-3.2$ exit exit”部分。

Answer 2

我使用一个函数来做这种事情：

echocmd() {
    echo "$@"
    "$@"
}

然后

$ echocmd ls -ltr > ls_out.txt