shell脚本判断文件是否存在 在进行linux系统相关应用程序开发时，少不了要书写一些shell脚本，有时候要用到判断文件或者目录是否存在的脚本，本文笔者做一下笔记，已备后查。 shell判断文件是否存在的脚本如下： 其实shell对于文件册测试有好几种选项开关 现在例举如下： 表达式测试含义-a filepathfile exists. all files type-b filepathfile exists and is a block special file.-c filepathfile exists and is a character special file.-d filepathfile exists and is a directory.-e filepathfile exists (等同于 -a).-f filepathfile exists and is a regular file.-g filepathfile exists and has its setgid(2) bit set.-G filepathfile exists and has the same group ID as this process.-k filepathfile exists and has its sticky bit set.-L filepathfile exists and is a symbolic link.-n filepathstring length is not zero.-o filepathNamed option is set on.-O filepathfile exists and is owned by the user ID of this process.-p filepathfile exists and is a first in, first out (FIFO) special file ornamed pipe.-r filepathfile exists and is readable by the current process.-s filepathfile exists and has a size greater than zero.-S filepathfile exists and is a socket.-t filepathfile descriptor number fildes is open and associated with aterminal device.-u filepathfile exists and has its setuid(2) bit set.-w filepathfile exists and is writable by the current process.-x filepathfile exists and is executable by the current process. shell脚本之文件是否存在、权限校验 判断目录是否存在 判断文件是否存在 判断目录/文件是否存在 判断文件权限 判断文件是否属于当前用户 判断文件是否与当前用户相同用户组 比较文件之间是否为新建 复合条件判断文件 总结 以上为个人经验，希望能给大家一个参考，也希望大家多多支持脚本之家。