Linuxshell determines whether the file exists

Shell checks whether a file exists or has Permissions #! /Bin/shmyPath & quot;/var/log/httpd/& quot; myFile & quot;/var/log/httpd/access. log & quot; # Here, the-x parameter determines whether $ myPath exists and has executable permissions. if [! -X & quot; $ myPat... shell: determines whether a file exists or has Permissions #! /Bin/sh myPath = "/var/log/httpd/" myFile = "/var/log/httpd/access. log "# Here, the-x parameter determines whether $ myPath exists and has executable permissions. if [! -X "$ myPath"]; then mkdir "$ myPath" fi www.2cto.com # Here, The-d parameter determines whether $ myPath exists if [! -D "$ myPath"]; then mkdir "$ myPath" fi # Here, the-f parameter determines whether $ myFile exists if [! -F "$ myFile"]; then touch "$ myFile" fi # Other parameters include-n, which determines whether a variable has a value if [! -N "$ myVar"]; then echo "$ myVar is empty" exit 0 fi # determine whether two variables are equal if ["$ var1" = "$ var2"]; then echo '$ var1 eq $ var2 'else echo' $ var1 not eq $ var2' fi author sundful