#! /bin/bash

set -eu

if [ "$#" -ne 1 ] ; then
  echo "Usage: $O dir_to_backup"
  exit 1
fi

test -d "$1" || { 
  echo "$1 don't exist or not a dir" 
  exit 2
}

if [ ! -d "$1" ] ; then
  echo "$1 don't exist or not a dir"
  exit 2
fi

src=$1
dest=/var/backups/$(date -I)

mkdir -p "${dest}" || exit 3

# tar cpzf /var/backups/$(date -I)/etc.tgz /etc
tar cpzf "${dest}/${src}.tgz" "${src}"
ret=$?

if [ $ret -eq 0 ] ; then
  find "${dest}"  -maxdepth 1 -type f -mtime +7 -exec echo rm {} \;
fi





exit $ret