The Linux shell determines whether files and folders exist __linux

Shell judge file, directory exists or have permissions #!/bin/sh mypath= "/var/log/httpd/" myfile= "/var/log/httpd/access.log" #这里的-x parameter judgment $ Whether the MyPath exists and has executable permissions if [!-X "$myPath"]; Then mkdir "$myPath" fi www.2cto.com #这里的-d parameter to determine if $mypath exists if [!-D "$myPath"]; Then mkdir "$myPath" fi #这里的-F parameter to determine if there is an IF [! F "$myFile"]; Then touch "$myFile" fi #其他参数还有-n,-n is to determine whether a variable has a value if [!-n "$myVar"]; Then echo "$myVar is empty" Exit 0 fi #两个变量判断是否相等 If ["$var 1" = "$var 2"]; Then echo ' $var 1 eq $var 2 ' else echo ' $var 1 don't eq $var 2 ' fi