什么是/bin/true [英] What is /bin/true

问题描述

在Linux系统上，什么是/bin/true?

On a Linux system what is /bin/true?

推荐答案

/bin/true是返回0(shell中的真值)的命令.

/bin/true is a command that returns 0 (a truth value in the shell).

它的目的是在shell脚本中通常用编程语言使用诸如"true"之类的文字的地方使用，而shell只需要命令来运行.

Its purpose is to use in places in a shell script where you would normally use a literal such as "true" in a programming language, but where the shell will only take a command to run.

/bin/false与之相反，它返回非零(shell中为假值).

/bin/false is the opposite that returns non-zero (a false value in the shell).

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