preinst-backup

   1 #!/bin/sh -ex
   2
   3 if [ -n "`cd /etc; bzr modified`" ]; then
   4     echo "uncommitted changes in /etc, aborting" >&2
   5     exit 1
   6 fi
   7
   8 # push /etc/
   9 (cd /etc; HOME=/home/martin bzr push)
  10
  11 # copy backup to ~
  12 if [ -d /home/martin/backup ]; then
  13     echo "/home/martin/backup exists already, aborting" >&2
  14     exit 1
  15 fi
  16 [ ! -d /var/backups/martin/ ] || cp -a /var/backups/martin/ /home/martin/backup