完全备份和增量备份

#!/bin/bash

SRCDIR="/tmp/test2/source"
BAKDIR="/tmp/test2/backup"
TODAY="$(date +%H_%M)"
FILELIST="/tmp/file.list"
TIMEKEY="/tmp/test2/time.key"

full()
{
    touch $TIMEKEY
    cd $SRCDIR
    [ $? -eq 0 ] && find ./ ! -type d > $FILELIST
    mkdir -p $BAKDIR/$TODAY
    tar -T $FILELIST -c | tar -x -C $BAKDIR/$TODAY
}


update()
{
    [ ! -f $TIMEKEY ] && full
    touch $TIMEKEY.tmp
    cd $SRCDIR
        [ $? -eq 0 ] && find ./ -newer $TIMEKEY ! -type d > $FILELIST.tmp
    mkdir -p $BAKDIR/$TODAY
    tar -T $FILELIST.tmp -c | tar -x -C $BAKDIR/$TODAY
    mv $TIMEKEY.tmp $TIMEKEY
}


case $1 in
    full)
        full
    ;;
    update)
        update
    ;;
    *)
        echo "input full or update"
    ;;
esac