#Bash 的 tee 命令

tee [OPTION]... [FILE]...

功能

读取标准输入，然后将内容打印到标准输出以及每个文件。

类型

可执行文件（/usr/bin/tee），属于 coreutils。

参数

OPTION 选项：
- -a, --append - 追加写入文件，而不是覆盖文件
- -i, --ignore-interrupts - 忽略中断信号
- -p - 以更合适的模式操作管道
- --output-error[=MODE] - 写入错误时的行为：
  - warn - 写入错误时发出警告
  - warn-nopipe - 写入非管道输出发生错误时，发出警告
  - exit - 写入错误时退出
  - exit-nopipe - 写入非管道输出发生错误时，退出
- --help - 显示帮助
- --version - 显示版本
FILE - 文件列表；如果没有这个参数或指定为 -，则读取标准输入

#示例

创建文件

$ tee 1.txt << EOF          # 将接下来的输入写入 1.txt，遇到 EOF 时结束
> Primers 编程伙伴
> https://xplanc.org/primers/
> EOF
Primers 编程伙伴
https://xplanc.org/primers/
$ cat 1.txt
Primers 编程伙伴
https://xplanc.org/primers/

cmd << XXX 语法表示读取输入直到 XXX 结束，然后将这段内容（不含 XXX）作为标准输入运行 cmd。

重定向

$ my_cmd | tee -a 1.txt     # 将 my_cmd 命令的输出打印出来的同时追加写入 1.txt

辅助 VIM 提权写入文件

:w ! sudo tee % > /dev/null

使用 vim 打开文件时未使用 sudo，没有写入权限；可以使用此命令提权写入文件。

! 将缓冲区作为标准输入传递给后面的命令
% 展开为当前文件的路径

#推荐阅读

#手册

TEE(1)                           User Commands                          TEE(1)

NAME
       tee - read from standard input and write to standard output and files

SYNOPSIS
       tee [OPTION]... [FILE]...

DESCRIPTION
       Copy standard input to each FILE, and also to standard output.

       -a, --append
              append to the given FILEs, do not overwrite

       -i, --ignore-interrupts
              ignore interrupt signals

       -p     operate in a more appropriate MODE with pipes.

       --output-error[=MODE]
              set behavior on write error.  See MODE below

       --help display this help and exit

       --version
              output version information and exit

   MODE determines behavior with write errors on the outputs:
       warn   diagnose errors writing to any output

       warn-nopipe
              diagnose errors writing to any output not a pipe

       exit   exit on error writing to any output

       exit-nopipe
              exit on error writing to any output not a pipe

       The  default  MODE  for  the -p option is 'warn-nopipe'.  With "nopipe"
       MODEs, exit immediately if all outputs become broken  pipes.   The  de‐
       fault  operation when --output-error is not specified, is to exit imme‐
       diately on error writing to a pipe, and diagnose errors writing to  non
       pipe outputs.

AUTHOR
       Written by Mike Parker, Richard M. Stallman, and David MacKenzie.

REPORTING BUGS
       GNU coreutils online help: <https://www.gnu.org/software/coreutils/>
       Report any translation bugs to <https://translationproject.org/team/>

COPYRIGHT
       Copyright  ©  2023  Free Software Foundation, Inc.  License GPLv3+: GNU
       GPL version 3 or later <https://gnu.org/licenses/gpl.html>.
       This is free software: you are free  to  change  and  redistribute  it.
       There is NO WARRANTY, to the extent permitted by law.

SEE ALSO
       Full documentation <https://www.gnu.org/software/coreutils/tee>
       or available locally via: info '(coreutils) tee invocation'

GNU coreutils 9.4                 April 2024                            TEE(1)

#Bash 的 tee 命令

#示例

#推荐阅读

#手册

显示