Job for sw-engine.service failed because the control process exited with error code. See "systemctl status sw-engine.service" and "journalctl -xe" for details. code example

Example: job for mysql.service failed because the control process exited with error code. see "systemctl status mysql.service" and "journalctl -xe" for details.

mysqld_safe --defaults-file=/etc/my.cf

chown -R mysql:mysql /var/lib/mysql

/etc/init.d/mysqld start

 /etc/init.d/mysqld stop

systemctl restart systemd-logind