Prioritizing own NTP servers for systemd-timesyncd
1 2 3 | # cat /etc/systemd/timesyncd.conf.d/timesyncd-corporate.conf [Time] NTP=ntp1.example.com ntp2.example.com ntp.ubuntu.com |
Test if text is empty (even if it does contain a linebreak)
Good job by: https://unix.stackexchange.com/q/386499/2028
1 | if ! grep -q '[^[:space:]]' "${file}" ; then echo "Text is empty" ; fi |
Watch for changes in the Gnome registry
(To reproduce manual changes, for configuration management.)
1 | dconf watch / # (Sorry, thats all) |
Trigger Debian/Ubuntu unattended-upgrade
(For testing configuration changes)
1 2 3 | rm /var/lib/apt/periodic/ * systemctl start apt-daily.service systemctl start apt-daily-upgrade.service |
And remember:
1 | tail -f /var/log/unattended-upgrades/ *log |