Andy's blog

tee

tee 命令将标准输入发送到标准输出或者写入文件

 /mnt/d/code/vim_learn  tee tee_example.sh
teee command send stdin to stdout or save to fileteee command send stdin to stdout or save to file%                                                              /mnt/d/code/vim_learn  cat tee_example.sh
teee command send stdin to stdout or save to file%

这里有个问题，像上面这样直接写内容的话在ctrl d 终止输入时会将内容重新输入一遍，但实际内容并没有写入这个文件，即只有前面一部分我输入的写入文件了，不知道这是不是和ctrl d 这个shell命令有关

在shell中管道符可以将前面命令的标准输出转为后面命令的输入，此时可以通过tee命令，同时将它保存到文件，又作为输出

 /mnt/d/code/vim_learn  ls |tee ls_tee.txt
total 0
drwxrwxrwx 1 andy andy 4096 May 17 17:32 .
drwxrwxrwx 1 andy andy 4096 May 12 22:21 ..
-rwxrwxrwx 1 andy andy    7 May 12 22:47 a.txt
-rwxrwxrwx 1 andy andy    0 May 12 22:21 b.txt
-rwxrwxrwx 1 andy andy  454 May 17 16:15 c1.sh
-rwxrwxrwx 1 andy andy  518 May 17 16:23 c2.sh
-rwxrwxrwx 1 andy andy   25 May 16 18:13 shell.sh
-rwxrwxrwx 1 andy andy  128 May 16 17:58 success_test.sh
-rwxrwxrwx 1 andy andy   49 May 17 18:58 tee_example.sh
drwxrwxrwx 1 andy andy 4096 May 16 08:23 temp
 /mnt/d/code/vim_learn  cat ls_tee.txt
total 0
drwxrwxrwx 1 andy andy 4096 May 17 17:32 .
drwxrwxrwx 1 andy andy 4096 May 12 22:21 ..
-rwxrwxrwx 1 andy andy    7 May 12 22:47 a.txt
-rwxrwxrwx 1 andy andy    0 May 12 22:21 b.txt
-rwxrwxrwx 1 andy andy  454 May 17 16:15 c1.sh
-rwxrwxrwx 1 andy andy  518 May 17 16:23 c2.sh
-rwxrwxrwx 1 andy andy   25 May 16 18:13 shell.sh
-rwxrwxrwx 1 andy andy  128 May 16 17:58 success_test.sh
-rwxrwxrwx 1 andy andy   49 May 17 18:58 tee_example.sh
drwxrwxrwx 1 andy andy 4096 May 16 08:23 temp

可以看到ls命令输出了，同时也定稿ls_tee.txt中了

Tee 命令

tee