perm_check

UNIX[1].shell范例精解(第4版)_code

#!/bin/bash
# Using the old style test command
# filename: perm_check
file=./testing
if [ -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 $file."
	fi
else
	echo "$file is neither a file nor a directory. "
fi