false OPTION
!subtitle:功能
什么也不做，直接返回失败（1），通常用于 if 语句。
!subtitle:类型
Bash 内置命令。
false也是 coreutils 的一个可执行文件；为了保持 POSIX 标准的兼容性，确保在其他 shell（比如一些极简的或古老的 shell）或者某些特定环境下，命令依然可用。
!subtitle:参数
OPTION 选项：
--help - 显示帮助
--version - 显示版本
if [ false ]; then
echo 吃饭
else
echo 睡觉
fi
| 命令 | 说明 |
|---|---|
| true | 直接返回失败 |
| test | 评估表达式的布尔值 |
FALSE(1) User Commands FALSE(1)
NAME
false - do nothing, unsuccessfully
SYNOPSIS
false [ignored command line arguments]
false OPTION
DESCRIPTION
Exit with a status code indicating failure.
--help display this help and exit
--version
output version information and exit
NOTE: your shell may have its own version of false, which usually su‐
persedes the version described here. Please refer to your shell's doc‐
umentation for details about the options it supports.
AUTHOR
Written by Jim Meyering.
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/false>
or available locally via: info '(coreutils) false invocation'
GNU coreutils 9.4 April 2024 FALSE(1)