filecheck

来自「Advanced Bash&#8722 Scripting Guide An 」· 代码 · 共 37 行

#!/bin/ksh
# Scriptname: filecheck
# Example 10.92
# Usage: filecheck filename
# Purpose: Check to see if a file exists,what type it is,
# and its permissions

if [[ $# = 0 ]] ; then
    print "Usage:  $(basename $0)  filename " 1>&2
    exit 1
fi

file=$1	  # Variable is set to first command line argument
if [[ ! -a $file ]]
then
    print "$file does not exist"
    exit 1
fi

if [[ -d $file ]] 
then
    print "$file is a directory" 
elif [[ -f $file ]]
then 
    if [[ -r $file && -w $file && -x $file ]]   # nested if command
    then 
	print "You have read, write, and execute permission on 
	file $file"
    else
	print "You don't have the correct permissions"
	exit 2
    fi
else
    print "$file is neither a file nor a directory. "
    exit 3
fi