在bash脚本中,如何判断脚本输出是否重定向到文件?

时间:2021-12-16 19:31:20

I want to write a shell script that will use colored output when output is terminal, and normal output when redirected to a file. How can I do that?

我想编写一个shell脚本,当输出为终端时将使用彩色输出,并在重定向到文件时使用正常输出。我怎样才能做到这一点?

1 个解决方案

#1


9  

Very simple:

if [ -t 1 ]; then
    echo "Hello, terminal."
else
    echo "Not a terminal."
fi

-t tests if the given file descriptor (here, 1 = stdout) is attached to a terminal.

-t测试给定的文件描述符(此处为1 = stdout)是否附加到终端。

#1


9  

Very simple:

if [ -t 1 ]; then
    echo "Hello, terminal."
else
    echo "Not a terminal."
fi

-t tests if the given file descriptor (here, 1 = stdout) is attached to a terminal.

-t测试给定的文件描述符(此处为1 = stdout)是否附加到终端。