#
# Script for backup
# @version 1.0
# @file 'last' Last time executed time
# @file 'log' Log actions
# 
#########################
### USER CONFIGURATON ###
#########################

WD='/home/boris/scripts/daily_backup/' # script directory
#DIRS="/home/boris/.thunderbird /home/boris/www" # directories to backup delimited with SPACE
DIRS="/home/boris/www/live" # directories to backup delimited with SPACE
BKP_LOC="/home/boris/Desktop/" # where to zip files (directory)
LOG_LINES=1000 # max. number of lines in log file.

#########################################
### Script content: (don't edit this) ###
#########################################

TIME_FILE=$WD'last'
LOG_FILE=$WD'log'
DATUM=$(date +"%Y%m%d_%H%M")
LAST_BKP=$(cat $TIME_FILE)
NOW=$(date +"%Y%m%d%H%M%S")

let DIFF=($NOW-$LAST_BKP) # let is needed for arithmetic operation on strings

CT=`date +"%Y-%m-%d %H:%M"`

echo '-----[start '$CT']----------\n' >> $LOG_FILE

echo '\n' >> $LOG_FILE
echo `let $NOW-$LAST_BKP` >> $LOG_FILE
echo '\n' >> $LOG_FILE

INTERVAL=1000000 # = 24hours

echo $NOW'<now;\n'$LAST_BKP'<last \n diff: '$DIFF >> $LOG_FILE

if test $DIFF -gt $INTERVAL
	then
		### we will execute script ###
		/bin/tar -czf $BKP_LOC"backup-"$DATUM.tar.gz $DIRS

		WR_TIME=$(date +"%Y%m%d")'060000'
		echo $WR_TIME > $TIME_FILE
		
		### LOG ###
		let NEXT=$WR_TIME+$INTERVAL
		echo '['$DATUM'] - Script executed. Next: '$NEXT  >> $LOG_FILE
	else
		echo '['$DATUM'] - Script not executed' >> $LOG_FILE
fi

#### crop log file ####
LOG_CONT=`tail -n $LOG_LINES $LOG_FILE`
echo "$LOG_CONT" > $LOG_FILE