Other commands
Journalctl quick reference:
journalctl -w = tail -f
To filter on a particular service, identifier, or PID:
journalctl -u postfix
journalctl -t ident
journalctl _PID=123
To do a time-based filter:
journalctl --since 1 hour
journalctl --since today
Since last boot (add it -1 for previous day, etc):
journalctl -b
When there is an issue (lockup)
Send commands directly to kernel by holding down Alt+PrtSc, then issue the following commands separately or sequentially R E I S U B (busier backwards)
R = reset the keyboard
E = send a TERM signal to all processes
I = send a KILL to all processes
S = tells kernel to sync
U = unmount all files systems and remount in read-only
B = reboot system
Find location of IP address:
> curl ipinfo.io/xxx.xxx.xxx.xxx
Ubuntu Server losing resolve.conf settings after reboot
edit /etc/systemd/resolv.conf.d/dns_servers.conf accordingly
To enable Cyrillic in wine programs:
1) enable Russian in the locale.
Add or uncomment the following line in /etc/locale.gen
ru_RU.UTF8
2) Run locale-gen
3) add the following to the wine command: LANG=ru_RU.UTF-8 wine ........