backup.sh

#!/bin/sh -e
# Author: yottatsa

su - yottatsa -c 'make backup' 2>&1 | /usr/bin/logger -t backup

if \
        [ $(date -d "today" "+%m") -ne $(date -d "tomorrow" "+%m") ] || \
        [ "$(date '+%a')" = "Tue" -a $(date +%d) -lt 29 -a $(date +%d) -gt 2 ]
then
        (
                cd "/media/portable/backup"
                mask="$(readlink latest | sed 's,-..$,,')"
                file="$(echo $mask | sed 's,-,_,').tar.gz"
                tar czf "${file}" -C ./ "$mask"* latest

                find -maxdepth 1 -name '*.gpg' -delete
                gpg --yes --encrypt -r {{ backup_recipient }} "${file}"
                find -maxdepth 1 -name '*.tar.gz' -delete

                s3cmd put "${file}.gpg" s3://{{ backup_bucket }}/
        ) 2>&1 | /usr/bin/logger -t backup
fi