Setting Date and Time
From Openmoko
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| − | See | + | Linux systems (such as the Freerunner) prefer that the system clock be set to universal time (UTC). Then, you will need to configure the timezone to display the time adjusted to local time. |
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| + | See [[Timezone]] for instructions on changing the time zone. | ||
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| + | For more information on Linux timekeeping, see [http://www.linuxsa.org.au/tips/time.html Linux, Clocks, and Time]. (But ignore mentions of ''/etc/sysconfig/clock''. That doesn't apply to the Openmoko environment.) | ||
== Setting the date/time using "date" == | == Setting the date/time using "date" == | ||
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== Setting date/time from your linux box == | == Setting date/time from your linux box == | ||
| − | ssh root@openmoko "date -s `date +%m%d%H%M%Y.%S`" | + | ssh root@openmoko "date -s `date --utc +%m%d%H%M%Y.%S`" |
== Setting the date/time automatically with NTP == | == Setting the date/time automatically with NTP == | ||
Revision as of 07:45, 19 July 2008
Linux systems (such as the Freerunner) prefer that the system clock be set to universal time (UTC). Then, you will need to configure the timezone to display the time adjusted to local time.
See Timezone for instructions on changing the time zone.
For more information on Linux timekeeping, see Linux, Clocks, and Time. (But ignore mentions of /etc/sysconfig/clock. That doesn't apply to the Openmoko environment.)
Contents |
Setting the date/time using "date"
To change the date on your Freerunner, issue one of the following commands:
date -s MMDDhhmm date -s MMDDhhmmYYYY date -s MMDDhhmmYYYY.ss
where MM is the month, 01-12; DD is the day, 01-31; hhmm is the time, 0000-2359; YYYY is the optional year, and .ss is the optional seconds.
Setting date/time from your linux box
ssh root@openmoko "date -s `date --utc +%m%d%H%M%Y.%S`"
Setting the date/time automatically with NTP
If your Freerunner is connected to the internet, you can instead set the time automatically:
opkg install ntpclient ntpclient -s -h pool.ntp.org
Syncing the hardware clock
No matter which method you used above, sync the hardware clock with the system time to make your change persist over reboots:
hwclock --systohc
Future Work
Presumably it might also be possible to use gpspipe (or something else) to set the date once you have a gps fix? In addition, the phone stack should set the date, time, and timezone once connected to a network.
