# arg 1:  the new package version
post_install() {
  groupadd -g 42 privoxy &>/dev/null
  useradd -u 42 -g privoxy -d /var/spool/privoxy -s /bin/false privoxy &>/dev/null
  chown -R privoxy:privoxy /etc/privoxy /var/log/privoxy
}

# arg 1:  the new package version
# arg 2:  the old package version
post_upgrade() {
  post_install $1
}

# arg 1:  the old package version
pre_remove() {
  userdel privoxy &>/dev/null
  groupdel privoxy &>/dev/null
}

op=$1
shift

$op $*