pathchk [OPTION]... [NAME]...
!subtitle:功能
检查文件名（路径）是否有效或可移植。
!subtitle:类型
可执行文件（/usr/bin/pathchk），属于 coreutils。
!subtitle:参数
OPTION 选项：
-p - 检查文件名是否在大多数 POSIX 系统有效
-P - 空的文件名和以 - 开头的文件名无效
--portability - 检查是否在所有 POSIX 系统上有效；相当于 -p -P
--help - 显示帮助
--version - 显示版本
NAME - 文件名列表
!subtitle:返回值
0 - 所有文件名都通过了检查
1 - 存在某个文件名未通过检查
$ pathchk -p filename; echo $?
0
$ pathchk -p -- -filename; echo $?
0
$ pathchk -P -- -filename; echo $?
pathchk: leading '-' in a component of file name '-filename'
1
$? 表示上一个命令的返回值
-- 表示后面的参数不被当作选项
PATHCHK(1) User Commands PATHCHK(1)
NAME
pathchk - check whether file names are valid or portable
SYNOPSIS
pathchk [OPTION]... NAME...
DESCRIPTION
Diagnose invalid or non-portable file names.
-p check for most POSIX systems
-P check for empty names and leading "-"
--portability
check for all POSIX systems (equivalent to -p -P)
--help display this help and exit
--version
output version information and exit
AUTHOR
Written by Paul Eggert, David MacKenzie, and 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/pathchk>
or available locally via: info '(coreutils) pathchk invocation'
GNU coreutils 9.4 April 2024 PATHCHK(1)