10.0
10.0-rc1
10.1
10.1-rc1
11.0
11.0-rc1
11.0-rc2
11.0-rc3
11.1
11.1-rc1
11.2
11.2-rc1
11.3
11.3-rc1
12.0
12.0-rc1
12.1
12.1-rc1
12.2
12.2-rc1
6.1
6.1.1
6.3
6.4
6.5
6.6
6.7
6.8
7.0
7.1
7.2
7.3
7.4
7.5
7.5-systemd
7.6
7.6-systemd
7.7
7.7-systemd
7.8
7.8-systemd
7.9
7.9-systemd
8.0
8.1
8.2
8.3
8.4
9.0
9.1
arm
bdubbs/gcc13
ml-11.0
multilib
renodr/libudev-from-systemd
s6-init
trunk
xry111/arm64
xry111/arm64-12.0
xry111/clfs-ng
xry111/lfs-next
xry111/loongarch
xry111/loongarch-12.0
xry111/loongarch-12.1
xry111/loongarch-12.2
xry111/mips64el
xry111/multilib
xry111/pip3
xry111/rust-wip-20221008
xry111/update-glibc
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1 | <?xml version="1.0" encoding="ISO-8859-1"?>
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2 | <!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.3//EN" "http://www.oasis-open.org/docbook/xml/4.3/docbookx.dtd" [
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3 | <!ENTITY % general-entities SYSTEM "../general.ent">
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4 | %general-entities;
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5 | ]>
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6 | <sect1 id="ch-scripts-setclock">
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7 | <title>Configuring the setclock script</title>
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8 | <?dbhtml filename="setclock.html"?>
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9 |
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10 | <indexterm zone="ch-scripts-setclock">
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11 | <primary sortas="d-setclock">setclock</primary>
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12 | <secondary>configuring</secondary></indexterm>
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13 |
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14 | <para>This <command>setclock</command> script reads the time from your hardware clock, also
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15 | known as BIOS or CMOS (Complementry Metal-Oxide Semiconductor) clock, and either converts that time to localtime
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16 | using the <filename>/etc/localtime</filename> file (if the hardware clock
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17 | is set to GMT) or not (if the hardware clock is already set to localtime).
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18 | There is no way to auto-detect whether the hardware clock is set to GMT or
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19 | not, so we need to configure that here ourselves.</para>
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20 |
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21 | <para>Change the value of the <emphasis>UTC</emphasis> variable below to a
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22 | <parameter>0</parameter> (zero) if your hardware clock is not set to GMT
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23 | time.</para>
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24 |
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25 | <para>Create a new file <filename>/etc/sysconfig/clock</filename> by running
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26 | the following:</para>
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27 |
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28 | <screen><userinput>cat > /etc/sysconfig/clock << "EOF"
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29 | # Begin /etc/sysconfig/clock
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30 |
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31 | UTC=1
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32 |
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33 | # End /etc/sysconfig/clock
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34 | EOF</userinput></screen>
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35 |
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36 | <para>Now, you may want to take a look at a very good hint explaining how we
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37 | deal with time on LFS at <ulink url="&hints-root;time.txt"/>.
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38 | It explains issues such as time zones, UTC, and the TZ environment
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39 | variable.</para>
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40 |
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41 | </sect1>
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