<HTML ><HEAD ><TITLE >$B$O$8$a$K(B</TITLE ><META NAME="GENERATOR" CONTENT="Modular DocBook HTML Stylesheet Version 1.54"><LINK REL="HOME" TITLE="The Clock Mini-HOWTO" HREF="index.html"><LINK REL="PREVIOUS" TITLE="The Clock Mini-HOWTO" HREF="index.html"><LINK REL="NEXT" TITLE="Linux $B$O$I$N$h$&$K;~4V$r7W$C$F$$$k$N$+(B" HREF="time-tracking.html"></HEAD ><BODY CLASS="SECT1" BGCOLOR="#FFFFFF" TEXT="#000000" ><DIV CLASS="NAVHEADER" ><TABLE WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TH COLSPAN="3" ALIGN="center" >The Clock Mini-HOWTO</TH ></TR ><TR ><TD WIDTH="10%" ALIGN="left" VALIGN="bottom" ><A HREF="index.html" >Prev</A ></TD ><TD WIDTH="80%" ALIGN="center" VALIGN="bottom" ></TD ><TD WIDTH="10%" ALIGN="right" VALIGN="bottom" ><A HREF="time-tracking.html" >Next</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><DIV CLASS="SECT1" ><H1 CLASS="SECT1" ><A NAME="INTRODUCTION" >1. $B$O$8$a$K(B</A ></H1 ><DIV CLASS="SECT2" ><H2 CLASS="SECT2" ><A NAME="AEN21" >1.1. $B$[$s$H$O2?;~$J$s$@$$!)(B</A ></H2 ><P >PC $B%^%6!<%\!<%I>e$N%j%"%k%?%$%`%/%m%C%/(B (Real-Time-Clock, RTC) $B%A%C%W$N(B $BIT@53N$5$OM-L>$G$9!#$?$$$F$$Aa$9$.$?$jCY$9$.$?$j$9$k$N$G!"KhF|>/$7$:$D(B $B;~7W$,68$C$F$$$-$^$9(B <A NAME="AEN24" HREF="#FTN.AEN24" >[1]</A >$B!#(B $B$7$+$7!"(BLinux $B$K$O%=%U%H%&%'%">e$G$3$l$r=$@5$9$k4JC1$JJ}K!$,$"$j$^$9!#(B $B$=$NJ}K!$r;H$($P!"30It$N;~Js%=!<%9$KMj$i$:$H$b;~7W$rHs>o$K@53N$KJ]$D$3$H$,(B $B$G$-$^$9!#$?$@!"$=$N@_DjJ}K!$rCN$k?M$,$"$^$j$$$J$$$N$O!"(B($B$*$=$i$/(B) $B0J2<$N$h$&$JM}M3$,$"$k$+$i$@$H;W$o$l$^$9!#(B</P ><P > <P ></P ><UL ><LI ><P >Linux $B$N@_DjA4HL$r2r@b$7$?J8=q$G$O$[$H$s$I$3$l$K?($l$i$l$F$*$i$:!"(B ($B30It$N;~Js%=!<%9$rMxMQ$9$k>l9g0J30$O(B) $B<+F0E*$K@_Dj$5$l$k$3$H$b$J$$$N$G!"(B $B%G%U%)%k%H$G$OMxMQ$5$l$J$$$3$H!#(B</P ></LI ><LI ><P ><B CLASS="COMMAND" >man clock</B > $B$H%3%^%s%I$rBG$D$H(B <TT CLASS="FILENAME" >clock (3)</TT > $B$,I=<($5$l$^$9$,!"$3$l$K$OA4A3JL$N;vJA$,5-:\$5$l$F$$$k$3$H!#(B<B CLASS="COMMAND" >man 8 clock</B > $B$b$7$/$O(B <B CLASS="COMMAND" >man 8 hwclock</B > $B$r;n$7$F(B $B$/$@$5$$(B ($B%;%/%7%g%s$r;XDj$;$:$K(B man page $B$r8!:w$7$?>l9g!"0lHL$N(B $B%G%#%9%H%j%S%e!<%7%g%s$G$O%;%/%7%g%s$N<c$$J}$,@h$KI=<($5$l$k$h$&$K$J$C$F(B $B$$$^$9!#(B<TT CLASS="FILENAME" >/etc/man.config</TT > $B$G;XDj$7$?=g$K8!:w$9$k(B $B%G%#%9%H%j%S%e!<%7%g%s$b$"$j$^$9(B)$B!#(B</P ></LI ><LI ><P >$B$=$b$=$b;~4V<+BN$r5$$K$7$F$$$J$$?M$,B?$$$i$7$$$3$H!#(B</P ></LI ><LI ><P >$B;~7W$N;~4V$r5$$K$9$k$R$H$O!"%M%C%H%o!<%/%?%$%`%5!<%P(B (netwok time server) $B$dEEGH;~7W(B (radio clock) $B$H$$$C$?30It$N;~Js%=!<%9$K%7%9%F%`%/%m%C%/$rF14|(B (sync) $B$5$;$F$$$k?M$,BgH>$G$"$k$3$H!#$3$N>l9g!"(BRTC $B$,@53N$+$I$&$+$O(B($B$[$H$s$I(B) $B4X78$,$J$/$J$j$^$9!#(B</P ></LI ></UL > </P ><P >$B$3$N(B mini-HOWTO $B$G$O!"%m!<%F%/$JJ}8~$+$i%"%W%m!<%A$7$^$9(B ($B$=$l$@$1$G!"(B $B;~7W$OHs>o$K@53N$K$J$j$^$9(B)$B!#$^$?!"$b$C$H@vN}$5$l$?J}K!$G;~4VD4@0$7$?$$(B $B?M$N$?$a$K!"3F<o$N>pJs8;$b>R2p$7$F$$$^$9!#8e<T$N>l9g!"$=$N<j$NJ8=q$N2r@b(B $B$O$*$*$`$M$7$C$+$j$7$F$$$k$N$G!"K\=q$G$O>\2r$7$^$;$s!#(B</P ><P >$BK\=q$NA0%P!<%8%g%s$G$O!"8E$$%7%9%F%`$r$$$^$b;H$C$F$$$k?M$N$?$a$K5l<0$N(B <B CLASS="COMMAND" >clock (8)</B > $B%W%m%0%i%`$K$D$$$F>\$7$/@bL@$7$F$$$^$7$?$,!":#2s$O(B $B$=$N%;%/%7%g%s$r>JN,$7$^$7$?!#8=:_B?$/$N%G%#%9%H%j%S%e!<%7%g%s$,(B <B CLASS="COMMAND" >clock (8)</B > $B$K$+$($F(B <B CLASS="COMMAND" >hwclock (8)</B > $B$r:NMQ(B $B$7$F$*$j!"(B<B CLASS="COMMAND" >hwclock (8)</B > $B%W%m%0%i%`$K4X$9$kJ88%$NJ}$,$:$C$H(B $BM%$l$F$$$k$+$i$G$9!#(B<B CLASS="COMMAND" >clock (8)</B > $B$N2r@bJ8$,I,MW$J>l9g$O!"Cx<T$K(B $B%a!<%k$GCN$i$;$F$/$@$5$$!#$?$@!"$=$N>l9g$O!"@h$:(B <B CLASS="COMMAND" >hwclock (8)</B > $B$K$D$$$F$N>O$rFI$s$G$+$i$K$7$F$/$@$5$$!#(B</P ><P ><DIV CLASS="NOTE" ><BLOCKQUOTE CLASS="NOTE" ><P ><B >$BCm0U(B: </B >RTC $B$d%7%9%F%`%/%m%C%/$r=$@5$9$k%W%m%0%i%`$r<B9T$9$k$K$O(B "root" $B$G%m%0%$%s(B $B$7$J$1$l$P$J$j$^$;$s!#$3$NJ8=q$G=R$Y$k%W%m%0%i%`$NBgH>$O!"(Broot $B8"8B$,(B $BI,MW$G$9!#IaCJ$+$i%0%i%U%#%+%k%$%s%?!<%U%'%$%9$7$+;H$C$F$$$J$$>l9g$O!"(B $B4pK\E*$J(B UNIX $B$N%7%'%k%3%^%s%I$r$$$/$D$+3X$VI,MW$,$"$k$+$b$7$l$^$;$s!#(B</P ></BLOCKQUOTE ></DIV ></P ><P ><DIV CLASS="NOTE" ><BLOCKQUOTE CLASS="NOTE" ><P ><B >$BCm0U(B: </B >$B%^%7%s>e$GJ#?t$N(B OS $B$r;H$C$F$$$k>l9g$O!"$=$N$&$A$R$H$D$@$1$G(B RTC $B$N(B $B@_Dj$r9T$$!"B>$N(B OS $B$H$N4V$G;~4V$,?)$$0c$&$3$H$,$J$$$h$&$K$9$kI,MW$,$"$j$^$9!#(B $B$?$@!"G/$K(B 2 $BEY$N2F;~4V$ND4@0$K$D$$$F$OJL$G$9(B ($B>\$7$/$O!"(B <A HREF="time-tracking.html#UTC-DST" >DST $B$N%;%/%7%g%s(B</A >$B$r$4Mw$/$@$5$$(B)$B!#(B</P ></BLOCKQUOTE ></DIV ></P ><P >$B%G%e%"%k%V!<%H%7%9%F%`$G<g$K(B Windows $B$r;H$C$F$$$k$J$i!"(BLinux $BHG$G$O(B $B$J$/!"(BWindows $BHG$N%/%m%C%/%=%U%H%&%'%"$K$D$$$FD4$Y$?$$$H;W$&$+$b$7$l$^$;$s!#(B $B$=$N>l9g$O!"<!$N(B NTP $B%&%'%V%5%$%H$N@bL@$r$4Mw$/$@$5$$!#(B<A HREF="http://www.eecis.udel.edu/~ntp/software.html" TARGET="_top" >http://www.eecis.udel.edu/~ntp/software.html</A >$B!#(B $BK\=q$G$NEEGH;~7W$N@bL@$NB?$/$O!"(BWindows $BMQ%=%U%H%&%'%"$K4X$9$k$b$N$b(B $B4^$^$l$F$$$^$9!#(B</P ></DIV ><DIV CLASS="SECT2" ><H2 CLASS="SECT2" ><A NAME="AEN62" >1.2. $B%=%U%H%&%'%"$NF~<j@h!'CxL>$J%"!<%+%$%V(B</A ></H2 ><P >$BK\=q$G$O%=%U%H%&%'%"$r%@%&%s%m!<%I$G$-$k>l=j$H$7$F$$$/$D$+$N%5%$%H$r(B $B5s$2$^$7$?$,!"(BCD-ROM $BHG$,<j$KF~$i$J$$>l9g$O(B Linux $B%7%9%F%`A4BN$r$=$3$+$i(B $B%@%&%s%m!<%I$9$k$3$H$b$G$-$^$9!#(B $B@N$O!"$=$N$h$&$J%5%$%H$O(B sunsite.unc.edu $B$N(B ftp $B%"!<%+%$%V$H3F9q$N$=$N%_%i!<%5%$%H$G$"$k$HAj>l$,7h$^$C$F$$$^$7$?$,!"(B $B8=:_(B sunsite $B$O(B <A HREF="http://metalab.unc.edu/linux/" TARGET="_top" >http://metalab.unc.edu/linux/</A > $B$H2~L>$5$l$F$$$^$9(B ($BLuCm!'(B 2001$BG/(B10$B7n8=:_$G$O(B ibiblio <A HREF="http://www.ibiblio.org/pub/linux/" TARGET="_top" >http://www.ibiblio.org/pub/linux/</A > $B$H$$$&L>>N$KJQ99$5$l$F$$$^$9(B)$B!#(B $B%G%#%9%H%j%S%e!<%7%g%s$NCf$K$OFH<+$N%&%'%V%5%$%H$r;}$C$F$$$k$b$N$b(B $B$"$j!"$=$N$J$+$K$O$3$NJ8=q$G07$&%=%U%H%&%'%"$,4^$^$l$F$$$k>l9g$b(B $B$"$j$^$9!#(B</P ><P >$B:G6a$G$O(B Linux $B$r(B CD $B$GF~<j$9$k?M$,$[$H$s$I$G$"$j!"$=$&$7$?(B CD $B$K$O%G%U%)%k%H(B $B$G%$%s%9%H!<%k$5$l$J$$$h$&$J3F<o%=%U%H%&%'%"$b$?$$$F$$4^$^$l$F$$$k$N$G!"(B $B<+J,$G$O0U<1$7$F$$$J$/$H$bK\=q$G=R$Y$k%W%m%0%i%`$,4{$K<j85$K$"$k>l9g$,(B $BB?$$$H;W$o$l$^$9!#(B</P ><P >$B$3$N(B mini-HOWTO $B$N:G?7%P!<%8%g%s$O!"(BLinux Documentation Project $B$N%[!<%`(B $B%Z!<%8$K$"$j$^$9!#(BLDP $B$N%[!<%`%Z!<%8$O!"8=:_(B <A HREF="http://www.linuxdoc.org/" TARGET="_top" >http://www.linuxdoc.org/</A > $B$G$9(B ($B>e=R$7$?(B metalab $B%5%$%H$+$i$bF~<j$,2DG=$G$9(B)$B!#8E$$%j%s%/$r;XDj$7$?(B $B>l9g$G$bI,$:8=:_$N%5%$%H$K(B forward $B$5$l$k$h$&$K$J$C$F$$$k$H;W$$$^$9!#(B</P ><P >$B$9$Y$F$N(B HOWTO $BJ8=q$O(B SGML $B$G5-=R$5$l$F$*$j!"5,3J$K4p$E$$$?JQ49%W%m%0%i%`(B $B$r;H$C$F3F<o%U%)!<%^%C%H$KJQ49$5$l$F$$$^$9!#$?$$$F$$$N?M$O(B HTML $B7A<0$G(B $BFI$`$H;W$o$l$^$9!#(BHTML $BHG$O!"(B <A HREF="http://www.linuxdoc.org/HOWTO/mini/Clock.html" TARGET="_top" >http://www.linuxdoc.org/HOWTO/mini/Clock.html</A > $B$G$9!#(B $B2~D{MzNr$O(B SGML $B%=!<%9$K%3%a%s%H$H$7$F5-:\$7$F$$$^$9!#(B $BBgItJ,$N%G%#%9%H%j%S%e!<%7%g%s$G$O!"A4(B HOWTO $BJ8=q$,(B <TT CLASS="FILENAME" >/usr/doc/HOWTO/</TT > $B$H(B <TT CLASS="FILENAME" >/usr/doc/HOWTO/mini/</TT > $B$K%$%s%9%H!<%k$5$l$F$$$^$9!#(B</P ></DIV ><DIV CLASS="SECT2" ><H2 CLASS="SECT2" ><A NAME="AEN74" >1.3. $B<U<-(B</A ></H2 ><P >$B$3$N(B mini-HOWTO $B$O!"(B1996$BG/$N=iHG0JMh!"Cx<T$K%a!<%k$rAw$C$F$/$l$?B?$/$N(B $BJ}!9$N$*$+$2$GBgI}$K2~A1$5$l$F$-$^$7$?!#Cf$K$O!"<ALd$r<u$1<h$C$?$O$:$J$N$K!"(B $B7k6I$3$A$i$,$$$m$$$m$H65$($F$$$?$@$$$?$3$H$b2?EY$+$"$j$^$7$?!#(B $B;DG0$J$,$i!"Cx<T$O$^$@$=$l$i$NJ}$N;aL>$N%j%9%H$r:n@.$7$F$$$^$;$s(B ($B<!2s$N2~D{$G$OB?J,5-:\$G$-$k$H;W$$$^$9(B)$B!#?4Ev$?$j$N$"$kJ}$O!"$4<+J,$N(B $B$3$H$@$H$*J,$+$j$K$J$k$H;W$$$^$9(B <TT CLASS="LITERAL" >:)</TT ></P ></DIV ></DIV ><H3 CLASS="FOOTNOTES" >Notes</H3 ><TABLE BORDER="0" CLASS="FOOTNOTES" WIDTH="100%" ><TR ><TD ALIGN="LEFT" VALIGN="TOP" WIDTH="5%" ><A NAME="FTN.AEN24" HREF="introduction.html#AEN24" >[1]</A ></TD ><TD ALIGN="LEFT" VALIGN="TOP" WIDTH="95%" ><P >$BLuCm!'%3%s%T%e!<%?$N%/%m%C%/$,$I$NDxEY@53N$+$r65$($F$/$l$k!"(B<A HREF="http://www.crl.go.jp/overview/index-J.html" TARGET="_top" >$BDL?.>pJs8&5f=j(B</A >$B$N(B $B%Z!<%8(B <A HREF="http://www2.crl.go.jp/pub/jst/index-J.html" TARGET="_top" >http://www2.crl.go.jp/pub/jst/index-J.html</A >$B$,$"$j$^$9!#(B</P ></TD ></TR ></TABLE ><DIV CLASS="NAVFOOTER" ><HR ALIGN="LEFT" WIDTH="100%"><TABLE WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" ><A HREF="index.html" >Prev</A ></TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="index.html" >Home</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" ><A HREF="time-tracking.html" >Next</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >The Clock Mini-HOWTO</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" > </TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >Linux $B$O$I$N$h$&$K;~4V$r7W$C$F$$$k$N$+(B</TD ></TR ></TABLE ></DIV ></BODY ></HTML >