bash file testing

 

Bash File Testing

-b filename - Block special file

-c filename - Special character file

-d directoryname - Check for directory Existence

-e filename - Check for file existence, regardless of type (node, directory, socket, symlink, etc.)

-f filename - Check for regular file existence not a directory

-G filename - Check if file exists and is owned by effective group ID

-G filename set-group-id - True if file exists and is set-group-id

-k filename - Sticky bit

-L filename - Symbolic link

-O filename - True if file exists and is owned by the effective user id

-r filename - Check if file is a readable

-S filename - Check if file is socket

-s filename - Check if file is nonzero size

-u filename - Check if file set-user-id bit is set

-w filename - Check if file is writable

-x filename - Check if file is executable

How to use:

#!/bin/bash

file=./file

if [ -e "$file" ]; then

    echo "File exists"

else 

    echo "File does not exist"

fi 

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