Dato/klokkeslet

Tidszone:

dpkg-reconfigure tzdata

Stil klokken automatisk:

ntpdate -b -s -u pool.ntp.org

-b Force the time to be stepped using the settimeofday(2) system
 call, rather than slewed (default) using the adjtime(2) system
 call. This option should be used when called from a startup file
 at boot time.

-s Divert logging output from the standard output (default) to the
 system syslog(3) facility. This is designed primarily for conve-
 nience of cron(8) scripts.

-u Direct ntpdate to use an unprivileged port for outgoing packets.
 This is most useful when behind a firewall that blocks incoming
 traffic to privileged ports, and you want to synchronise with
 hosts beyond the firewall. Note that the -d option always uses
 unprivileged ports.

Stil klokken manuelt:

date -s "Aug 3 17:41 CEST 2015"