< ^ txtMon Mar 9 07:57:36 EDT 2015 Slept OK, although I went to bed a little late. The weather is significantly warmer. Goals: Work: - Write up something about UEFI booting https://www.happyassassin.net/2014/01/25/uefi-boot-how-does-that-actually-work-then/ No time. Database issue. Home: - Take out trash Done. - Work on S&W Complete re-typeset Done. Questions: - Daylight savings time recently kicked in. Where is timezone info being set on linux these days? There's an '/etc/timezone': $ cat /etc/timezone America/New_York but: $ man 5 timezone No manual entry for timezone in section 5 Hmm. $ man -k timezone localtime (5) - Local timezone configuration file Time::Zone (3pm) - - miscellaneous timezone manipulations routines timezone (3) - initialize time conversion information tzfile (5) - timezone information tzselect (1) - view timezones tzselect (8) - select a timezone zdump (8) - timezone dumper zic (8) - timezone compiler $ man 5 localtime LOCALTIME(5) localtime LOCALTIME(5) NAME localtime - Local timezone configuration file SYNOPSIS /etc/localtime -> ../usr/share/zoneinfo/... DESCRIPTION The /etc/localtime file configures the system-wide timezone of the local system that is used by applications for presentation to the user. It should be an absolute or relative symbolic link pointing to /usr/share/zoneinfo/, followed by a timezone identifier such as "Europe/Berlin" or "Etc/UTC". The resulting link should lead to the corresponding binary tzfile(5) timezone data for the configured timezone. Because the timezone identifier is extracted from the symlink target name of /etc/localtime, this file may not be a normal file or hardlink. The timezone may be overridden for individual programs by using the TZ environment variable. See environ(7). You may use timedatectl(1) to change the settings of this file from the command line. SEE ALSO systemd(1), tzset(3), localtime(3), timedatectl(1), systemd- timedated.service(8) $ file /etc/localtime /etc/localtime: timezone data, version 2, 4 gmt time flags, 4 std time flags, no leap seconds, 235 transition times, 4 abbreviation chars $ timedatectl status Local time: Mon 2015-03-09 08:12:55 EDT Universal time: Mon 2015-03-09 12:12:55 UTC RTC time: Sun 2015-03-08 12:12:28 Time zone: America/New_York (EDT, -0400) NTP enabled: no NTP synchronized: no RTC in local TZ: no DST active: yes Last DST change: DST began at Sun 2015-03-08 01:59:59 EST Sun 2015-03-08 03:00:00 EDT Next DST change: DST ends (the clock jumps one hour backwards) at Sun 2015-11-01 01:59:59 EDT Sun 2015-11-01 01:00:00 EST The 'list-timezones' and 'set-timezone' arguments to `timedatectl` are the answer, I guess. $ timedatectl list-timezones | grep Detroit America/Detroit $ sudo timedatectl set-timezone America/Detroit $ cat /etc/timezone America/Detroit Huh. Looks like it sets the old-style '/etc/timezone' file too. I assume '/etc/timezone' is deprecated.
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