backup

UNIX+shell范例精解（第4版）代码

#!/bin/sh
# Scriptname: backup
# Purpose:
# Create backup files and store them in a backup directory
dir=/home/jody/ellie/backupscripts
for file in memo[1-5] 
do
	if [ -f $file ]
	then
	     cp $file $dir/$file.bak
	     echo "$file is backed up in $dir"
	fi
done