diff options
Diffstat (limited to 'chapter07/setclock.xml')
| -rw-r--r-- | chapter07/setclock.xml | 39 |
1 files changed, 18 insertions, 21 deletions
diff --git a/chapter07/setclock.xml b/chapter07/setclock.xml index a5a43f6a0..08c751cb4 100644 --- a/chapter07/setclock.xml +++ b/chapter07/setclock.xml @@ -11,28 +11,25 @@ <primary sortas="d-setclock">setclock</primary> <secondary>configuring</secondary></indexterm> -<para>The <command>setclock</command> script reads the time from the hardware clock, -also known as the BIOS or the Complementary Metal Oxide Semiconductor -(CMOS) clock. If the hardware clock is set to UTC, this script will convert the hardware clock's time to -the local time using the <filename>/etc/localtime</filename> file -(which tells the <command>hwclock</command> program which timezone the -user is in). There is no way to -detect whether or not the hardware clock is set to UTC time, so this -needs to be manually configured.</para> - -<para>If you cannot remember whether or not the hardware -clock is set to UTC time, find out by running -the <userinput>hwclock --localtime --show</userinput> command. This will tell -what the current time is according to the hardware clock. If this time -matches whatever your watch says, then the hardware clock is set to -local time. If the output from <command>hwclock</command> is not local -time, chances are it is set to UTC time. Verify this by adding or -subtracting the proper amount of hours for the timezone to this -<command>hwclock</command> time. For example, if you live in the MST +<para>The <command>setclock</command> script reads the time from the hardware +clock, also known as the BIOS or the Complementary Metal Oxide Semiconductor +(CMOS) clock. If the hardware clock is set to UTC, this script will convert the +hardware clock's time to the local time using the +<filename>/etc/localtime</filename> file (which tells the +<command>hwclock</command> program which timezone the user is in). There is no +way to detect whether or not the hardware clock is set to UTC time, so this +needs to be configured manually.</para> + +<para>If you cannot remember whether or not the hardware clock is set to UTC +time, find out by running the <userinput>hwclock --localtime --show</userinput> +command. This will display what the current time is according to the hardware +clock. If this time matches whatever your watch says, then the hardware clock is +set to local time. If the output from <command>hwclock</command> is not local +time, chances are it is set to UTC time. Verify this by adding or subtracting +the proper amount of hours for the timezone to the time shown by +<command>hwclock</command>. For example, if you are currently in the MST timezone, which is also known as GMT -0700, add seven hours to the local -time. Then, account for Daylight Savings Time, which requires -subtracting an hour (or only add six in the first place) during the summer -months.</para> +time.</para> <para>Change the value of the <envar>UTC</envar> variable below to a value of <parameter>0</parameter> (zero) if the hardware clock |