uninstall.bash

#!/usr/bin/env bash

BASEDIR="$(cd -P "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
OS="$(grep -o '^ID=.*$' /etc/os-release | cut -d'=' -f2)"

if [[ "$(id -u)" -ne 0 ]]; then
  echo "ERROR: You need to be ROOT (sudo can be used)."
  exit 1
fi
if ! [[ -f /usr/local/sbin/zram-config || -f /usr/sbin/zram-config ]]; then
  echo "ERROR: zram-config is not installed."
  exit 1
fi

zram-config "stop"
tar -cf "${BASEDIR}/logs.tar" --directory=/usr/local/share/zram-config log
if [[ $OS == "alpine" ]]; then
  rc-service zram-config stop
  rc-update del zram-config boot
  if [[ -f /etc/periodic/daily/zsync ]]; then
    rm -f /etc/periodic/daily/zsync
  fi
  rm -f /etc/init.d/zram-config
  rm -f /usr/sbin/zram-config
else
  systemctl disable zram-config.service
  rm -f /etc/systemd/system/zram-config.service
  if [[ -f /etc/systemd/system/zsync.timer ]]; then
    systemctl disable zsync.timer
    rm -f /etc/systemd/system/zsync.*
  fi
  sed -i '\|^ReadWritePaths=/usr/local/share/zram-config/log$|d' /lib/systemd/system/logrotate.service
  systemctl daemon-reload
  rm -f /usr/local/sbin/zram-config
fi
rm -f /etc/logrotate.d/zram-config
rm -f /etc/ztab
rm -rf /usr/local/lib/zram-config
rm -rf /usr/local/share/zram-config
rm -f /var/log/zram-config

echo "#####     zram-config has been uninstalled     #####"
echo "#####           Reboot is not needed           #####"