#!/bin/bash# Using the old style test command# filename: perm_checkfile=./testingif [ -d $file ] then	echo "$file is a directory" elif [ -f $file ]then 	if [ -r $file -a -w $file -a -x $file ] 	then                # nested if command		 echo "You have read,write,and execute \		 permission on $file."	fielse	echo "$file is neither a file nor a directory. "fi