tarsnap backup script

backup.sh

#!/bin/bash
# Example crontab entry:
#0 2 * * * /root/backup.sh

logfile="/var/log/tarsnap.log"                                                                                                                                    
email="[email protected]"
stuff_to_back_up="home/ etc/ var/www/ root/"
exclude_pattern="Dropbox"

run_backup() {
    local snapshot=$1
    local backup="$HOSTNAME-$(/bin/date +%F)${snapshot}"
    ( 
      while [ ${backupstatus:=1} -ne 0 ] && [ ${tries:=0} -le 5 ]
      do
          ((tries++))
          /bin/echo "$(/bin/date +"%T %F") Starting backup: $backup"
          /usr/local/bin/tarsnap -c --configfile /usr/local/etc/tarsnap.conf -C / --exclude "$exclude_pattern" -f "$backup" $stuff_to_back_up 2>&1
          backupstatus=$?
          sleep 600
      done
      /bin/echo "$(/bin/date +"%T %F") Backup finished"
    ) | /usr/bin/tee -a $logfile | /usr/bin/mailx -s "$HOSTNAME backup results" $email
}

# Prune old backups
for backup_type in "daily" "monthly" "weekly"
do
    case $backup_type in
        "daily") filter_for="[0-9]$"; numbackups=7;;
        "monthly") filter_for="\-monthly\-snapshot$"; numbackups=12;;
        "weekly") filter_for="\-weekly\-snapshot$"; numbackups=4;;
    esac
    old_backups=$(/usr/local/bin/tarsnap --list-archives | /bin/grep ${filter_for} | /usr/bin/sort -t- -k1,3 | /usr/bin/head --lines -${numbackups})
    for backup in $old_backups
    do
        ( /bin/echo "$(/bin/date +"%T %F") Removing backup: $backup"
          /usr/local/bin/tarsnap -d -f $backup 2>&1
          /bin/echo "$(/bin/date +"%T %F") Finished removing backup: $backup"
        ) >> $logfile
    done
done

if [ "$(date +%u)" -eq "1" ]
then
    run_backup "-weekly-snapshot"
fi

if [ "$(date +%d)" -eq "01" ]
then
    run_backup "-monthly-snapshot"
fi

run_backup
/bin/echo "=================================" >> $logfile

showbackups.sh

#!/bin/bash

currentbackups="$(tarsnap --list-archives | /usr/bin/sort -t- -k1,3)"

echo "Daily backups:"
egrep -v '(weekly|monthly)' <<< "$currentbackups"
echo
echo "Weekly backups:"
grep 'weekly-snapshot' <<< "$currentbackups"
echo
echo "Monthly backups:"
grep 'monthly-snapshot' <<< "$currentbackups"