foo_backup.sh

backup files

#!/bin/bash
BACKUP_DIR=/backup
SRCDIR=/src
TODAY_TIME=$(date +%F)
full()
{
	touch /tmp/time.key
	cd $SRCDIR
	find ./ ! -type d > file.list
	mkdir -p $BACKUP_DIR/$TODAY_TIME
	tar -T file.list -c | tar -x -C $BACKUP_DIR/$TODAY_TIME
	sed -i "s/$/ $TODAY_TIME/" file.list
	exit 0
}

update()
{
	[ ! -f /tmp/time.key ] && full 
	touch /tmp/time.key.tmp
	cd $SRCDIR
	find ./ -newer /tmp/time.key ! -type d > file.list.tmp
	mkdir -p $BACKUP_DIR/$TODAY_TIME
	tar -c -T file.list.tmp | tar -x -C $BACKUP_DIR/$TODAY_TIME
}

check_backup()
{
	( [ ! -f file.list.tmp ] || [ ! -f file.list ] ) && exit 
	while read filename
	do
		TMPSTR=$( grep "^$filename\>" file.list )
		if [ -z "$TMPSTR" ] ; then
			echo "$filename $TODAY_TIME" >> file.list
		else
			mkdir -p $BACKUP_DIR/check/$TODAY_TIME/$(dirname $filename)
			diff $BACKUP_DIR/$(echo "$TMPSTR" | awk '{ print $2 }')/$filename $BACKUP_DIR/$TODAY_TIME/$filename > $BACKUP_DIR/check/$TODAY_TIME/$filename
			sed -i "s/$TMPSTR/$filename $TODAY_TIME/" file.list
		fi
	done < file.list.tmp
}