linux commands

Updated: 2026-07-16

Apache

Enable/disable the website setting.

a2ensite 000-yoursite
a2dissite 000-yoursite

Check syntax.

apache2ctl configtest

journalctl

sudo journalctl -u apache2 -f
sudo journalctl -u apache2 -e

sudo is not required if the service is running under the current user.

journalctl -u myservice --since "2024-06-01 00:00:00" --until "2024-06-30 23:59:59"

journalctl -u myservice --since "2026-06-09" -o short --no-pager

systemctl

systemctl status apache2
systemctl start apache2
systemctl stop apache2
systemctl restart apache2
systemctl reload apache2
systemctl list-units --type=service

systemctl daemon-reload
systemctl enable apache2
systemctl disable apache2