<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
<HTML>
<HEAD>
<META NAME="GENERATOR" CONTENT="SGML-Tools 1.0.9">
<TITLE>Battery Powered Linux Mini-HOWTO: $B0lHLE*$J%7%9%F%`@_Dj$NJQ99Nc(B</TITLE>
<LINK HREF="Battery-Powered-5.html" REL=next>
<LINK HREF="Battery-Powered-3.html" REL=previous>
<LINK HREF="Battery-Powered.html#toc4" REL=contents>
</HEAD>
<BODY>
<A HREF="Battery-Powered-5.html">$B<!$N%Z!<%8(B</A>
<A HREF="Battery-Powered-3.html">$BA0$N%Z!<%8(B</A>
<A HREF="Battery-Powered.html#toc4">$BL\<!$X(B</A>
<HR>
<H2><A NAME="s4">4. $B0lHLE*$J%7%9%F%`@_Dj$NJQ99Nc(B</A></H2>
<P>$B%i%C%W%H%C%W$G(BLinux $B$r;H$&$h$&$K$J$C$F$+$i!"%O!<%I%G%#%9%/$X$N%"%/%;%9$,(B
$B?tIC$4$H$KH/@8$7$F$$$k$3$H$K5$$,IU$-$^$7$?!#$3$l$O%7%9%F%`$K$@$l$b%m%0%$(B
$B%s$7$F$$$J$$$H$-$bF1$8$G$7$?!#%O!<%I%G%#%9%/$O7h$7$F>J;q8;%b!<%I$KF~$k$3(B
$B$H$,$J$+$C$?$N$G$9!#%O!<%I%G%#%9%/$N6nF0$rM^@)$9$l$P!"EECS$N2TF/;~4V$O%0(B
$B%s$HD9$/$J$j$^$9!#$3$N>O$K$3$N$?$a$N$d$jJ}$r=8$a$?$N$O!"$=$N8z2L$,Bg$-$$(B
$B$+$i$J$N$G$9!#(B
<P>$B;n83$KMxMQ$7$?$N$O(B RedHat 4.1$B$G$9!#G[I[$K$h$C$F$O@_Dj%U%!%$%k$NCV>l=j$,(B
$B0[$J$C$F$$$k$+$b$7$l$^$;$s(B($B$=$N@a$K$O!"EvJ}$^$G8fCN$i$;2<$5$$(B)$B!#(B
<P>
<H2><A NAME="ss4.1">4.1 crond $B%G!<%b%s$H(B atrun</A>
</H2>
<P>$B0lJ,$4$H$K5/F0$9$k%W%m%;%9$,$"$k$+$I$&$+(B <CODE>/etc/crontab</CODE> $B$H$$$&%U%!%$%k(B
$B$rD4$Y$F2<$5$$!#(Batrun $B$,8+$D$+$k$3$H$,B?$$$G$7$g$&!#(B
<P>($BLuCm(B: slackware $B$N>l9g!"(B <CODE>/var/spool/crontab/root</CODE> $B$G$9(B)
<P>at $BL?Na$r;H$($P!"$3$l$+$i@h$=$N$&$A5/F0$5$l$kL?Na$r%9%W!<%k$G$-$^$9!#(B
Linux $B%7%9%F%`$NCf$K$O!"$3$N;E;v$r(B atd $B$H$$$&%G!<%b%s$K$^$+$;$F$$$k$b$N(B
$B$b$"$j$^$9!#$3$l$KBP$7(B RedHat $B$J$I$N>l9g$K$O!"(Bcrond $B$H$$$&%G!<%b%s$,0lJ,(B
$BKh$K(B atrun $B$r5/F0$7$^$9!#(B
<P>$B$?$$$F$$$N%7%9%F%`$N>l9g!"$3$l$OK\Ev$KI,MW$J$b$N$G$O$"$j$^$;$s!#(Bat $BL?Na(B
$B$,@53N$J;~4V$K5/F0$5$l$k$3$H$,;`3hE*$G$"$k$H$$$&$N$O5)$@$+$i$G$9!#(B
<CODE>/etc/crontab</CODE> $B$K$O0J2<$N$h$&$J0l9T$,8+$D$+$k$+$b$7$l$^$;$s!#(B
<P>
<BLOCKQUOTE><CODE>
<PRE>
# Run any at jobs every minute (at $B$r0lJ,$4$H$K5/F0(B)
* * * * * root [ -x /usr/sbin/atrun ] && /usr/sbin/atrun
</PRE>
</CODE></BLOCKQUOTE>
<P>$B$3$l$r0J2<$N$h$&$K=q$-49$($F$b2?$NLdBj$b$"$j$^$;$s!#(B
<P>
<BLOCKQUOTE><CODE>
<PRE>
# Run any at jobs every hour (at $B$r0l;~4V$4$H$K5/F0(B)
00 * * * * root [ -x /usr/sbin/atrun ] && /usr/sbin/atrun
</PRE>
</CODE></BLOCKQUOTE>
<P>$B>\$7$/$O(B crontab.5 $B$N%^%K%e%"%k$r8fFI$_2<$5$$!#%U%)!<%/$K$h$C$F$O(B crond
$B%G!<%b%s$J$7$G$b5!G=$7$^$9!#$3$N>l9g$K$O(B crond $B%G!<%b%s$r40A4$K30$7$F$7(B
$B$^$C$F$b$+$^$$$^$;$s!#(B
<P>
<H2><A NAME="ss4.2">4.2 update / bdflush $B%G!<%b%s(B</A>
</H2>
<P>Linux $B$,FCDj$N%?%$%_%s%0$G=hM}$9$k%*!<%W%s%U%!%$%k%P%C%U%!$O$+$J$j$N?t$K(B
$BC#$7$^$9!#$9$J$o$A!"%7%9%F%`$O%U%!%$%k$K2C$($i$l$?JQ99$r%O!<%I%G%#%9%/$K(B
$B5-O?$5$l$?$3$H$r6KNOB.$d$+$K3NG'$7$J$1$l$P$J$i$J$$$N$G$9!#$5$b$J$1$l$P!"(B
$B%7%9%F%`$,%/%i%C%7%e$7$?:]$K$O!"JQ99FbMF$,<:$o$l$F$7$^$&$N$G$9!#(B
<P>$B$3$N;E;v$r<u$1;}$C$F$$$k$N$,(B update / bdflush $B%G!<%b%s$G$9!#(B($BF10l$N%W%m(B
$B%0%i%`$,Fs$D$NL>A0$rL>>h$C$F$$$^$9!#$7$?$,$C$F5/F0$9$k:]$K$O$3$N$&$A$N$I(B
$B$A$i$+$NL>A0$r8F$s$G$b$+$^$$$^$;$s(B)$B=i4|@_Dj$G$O!"(Bflush $B$r8^IC$4$H$K!"(B
sync $B$r;0==IC$4$H$K8F$S=P$7$9$k$h$&$K$J$C$F$$$^$9!#(B
<P>$B8f;HMQCf$N%O!<%I%G%#%9%/>e$N%U%!!<%`%&%'%"<!Bh$G$9$,!"Cx<T$N5!3#$N>l9g$3(B
$B$N=i4|@_Dj$G$O%O!<%I%G%#%9%/$K%"%/%;%9$7$CJ|$7$K$J$j$^$9!#(B($B%O!<%I%G%#%9(B
$B%/$K$h$C$F$O!"A4$/JQ99$,$J$/$F$b%-%c%C%7%e%i%`$r%U%i%C%7%e$9$k$h$&$G$9(B)
<P>Linux $B$,$7$g$C$A$e$&!VMn$A$k!W$H$$$&$h$&$J$3$H$O$b$&$J$/$J$C$F$$$k$N$G!"(B
$BCx<T$O>e5-$NN>@_DjCM$r(B 3600$BIC$KJQ99$7$F$$$^$9!#$3$l$,LdBj$r0z$-5/$3$7$?(B
$BNc$O$J$/!"%O!<%I%G%#%9%/$X$N%"%/%;%9$bDj4|E*$KDd;_$9$k$h$&$K$J$j$^$7$?!#(B
($B$b$A$m$s:#%7%9%F%`$,Mn$A$?$i!"%U%!%$%k$,$+$J$j$?$/$5$s$d$i$l$F$7$^$&$G(B
$B$7$g$&$,(B)
<P>RedHat 4.1 $B$N>l9g(B <CODE>/etc/inittab</CODE> $BCf$N(B update $B8F$S=P$7$r<!$N$h$&$K(B
$BJQ99$7$^$9!#(B
<P>
<BLOCKQUOTE><CODE>
<PRE>
ud::once:/sbin/update -s 3600 -f 3600
</PRE>
</CODE></BLOCKQUOTE>
<P>Suse 4.4.1 ($BLuCm(B:$B%I%$%D$G$+$J$jI}$r$-$+$;$F$$$k$NG[I[$N0l$D(B)$B$N>l9g(B
update $B$r8F$S=P$7$7$F$$$k$N$O(B
<P>
<BLOCKQUOTE><CODE>
<PRE>
/sbin/init.d/boot
</PRE>
</CODE></BLOCKQUOTE>
<P>Slackware $B$N>l9g!"(B update $B$r8F$S=P$7$7$F$$$k$N$O(B /etc/rc.d/rd.S $B$G$9!#(B
<P>$B>\$7$/$O(B update $B$N%^%K%e%"%k$r;2>H$7$F$/$@$5$$!#(B
<P>
<H2><A NAME="ss4.3">4.3 syslogd $B%G!<%b%s(B</A>
</H2>
<P>syslogd $B%G!<%b%s$O!"(B<CODE>/var/log</CODE> $B%G%#%l%/%H%j$K$"$k(B Linux $B$NMM!9$J(B
$B%7%9%F%`%m%0%U%!%$%k$r;J$C$F$$$^$9!#%7%9%F%`%a%C%;!<%8$,H/$;$i$l$kEY$K(B
$B%m%0%U%!%$%k$rF14|$5$;$k$H$$$&$N$,=i4|@_Dj$H$J$C$F$$$^$9!#(B
<P>$B$3$N5!G=$rDd;_$5$;$k$K$O!"(B<CODE>/etc/syslog.conf</CODE> $B>e$K5-:\$5$l$F$$$k(B
$B%U%!%$%kL>$NA0$K%@%C%7%e(B "-" $B$r$D$1$/$o$($^$9!#0J2<$NNc$OCx<T$N(B
<CODE>syslog.conf</CODE> $B$G$9!#(B
<P>
<BLOCKQUOTE><CODE>
<PRE>
# Log anything (except mail) of level info or higher.
# Don't log private authentication messages!
*.info;mail.none;authpriv.none -/var/log/messages
</PRE>
</CODE></BLOCKQUOTE>
<P>$B$3$3$G$b!"%/%i%C%7%e;~$NLdBjE@$NJs9p$,%G%#%9%/$KJ]B8$5$l$J$$$H$$$&FsN'GX(B
$BH?$KD>LL$9$k$3$H$K$J$j$^$9!#(B
<P>
<H2><A NAME="ss4.4">4.4 init $B%3%^%s%I(B</A>
</H2>
<P>$B%V!<%H%"%C%WCf$K=i4|%W%m%;%9$d%G!<%b%s$r5/F0$9$k$?$a$K;HMQ$9$k$N$,(B init
$B%3%^%s%I$G$9!#$3$N%3%^%s%I$b!"3F%W%m%;%9$4$H$K(B sync $B$r8F$S=P$7$7$^$9!#(B
<P>$B$3$NE@$rJQ99$9$k$?$a$K$O!"%=!<%9%3!<%I$+$i(B sync() $B8F$S=P$7$r<h$j=|$-!"(Binit
$B%3%^%s%I$r:F%3%s%Q%$%k$9$kI,MW$,$"$j$^$9!#(B
<P>$B%U%!%$%k%P%C%U%!$,<:$o$l$k$H$$$&LdBj$O!"(B
<CODE>/etc/rc.d/init.d/halt</CODE> $B$H$$$&=q<0$N%U%!%$%k%7%9%F%`$r%"%s%^%&%s%H$9(B
$B$kD>A0$NItJ,$K(B sync $B8F$S=P$7$rIU$12C$($k$H$$$&J}K!$G2sHr$G$-$^$9!#(B
<P>
<H2><A NAME="ss4.5">4.5 $B%9%o%C%W(B $B%Q!<%F%#%7%g%s(B</A>
</H2>
<P>Linux $B$N%9%o%C%W%Q!<%F%#%7%g%s$O2>A[5-21$rMQ$$$FJ*M}E*%a%b%j6u4V$r9-$2$k(B
$B$?$a$N$b$N$G$9!#%9%o%C%W%Q!<%F%#%7%g%s$r;H$&$H$$$&$N$O!"%G%#%9%/%"%/%;%9(B
$B$N860x$N0l$D$H$J$j$^$9!#8f;H$$$N%i%C%W%H%C%W$,%i%`$r==J,AuHw$7$F$$$k>l9g!"(B
$B$"$k$$$O7Z$$%"%W%j%1!<%7%g%s(B(vi $B$N$h$&$J(B)$B$r;H$&>l9g$K$O!"%9%o%C%W$r!V@Z!W(B
$B$K$9$k$3$H$r9MN8$7$?$/$J$k$G$7$g$&!#(B
<P>$B%9%o%C%W$r!V@Z!W$K$G$-$k$+$I$&$+$O$b$A$m$s!V2?$r$7$h$&$H$9$k$+!W<!Bh$G$9!#(B
4M $B$d(B 8M $B$N%a%b%j$G$OIT==J,$G$9!#$I$&$7$F$b%9%o%C%W%Q!<%F%#%7%g%s$,I,MW(B
$B$G$9!#(B8 - 16 M $B$b$"$l$P!"%3%s%=!<%k$r;H$&%"%W%j%1!<%7%g%s$J$iFq$J$/MxMQ(B
$B$G$-$^$9!#%^%k%A%?%9%/5!G=$rD|$a$k$J$i!"%9%o%C%W$r!V@Z!W$K$7$F$b4m81$O$J(B
$B$$$G$7$g$&!#(BX-Windows $B4D6-$r;H$&$K$O=aBt$J%a%b%j$,I,MW$G$9!#(B16M $B0J>e$N%a(B
$B%b%j$,$J$$8B$j%9%o%C%W$OI,?\$G$9!#(B
<P>($BCp5-(B:$BCx<T$N%i%C%W%H%C%W$O(B16M$B$G$9$,!"%9%o%C%W$rMQ$$$J$$$G(B emacs $B0l$D!"(B
bash $B%7%'%k$r;M$DAv$i$;$J$,$i%+!<%M%k$N9=C[$r$7$F$b%a%b%jITB-$rMh$?$9$3(B
$B$H$O$"$j$^$;$s!#Cx<T$K$H$C$F$O$3$l$G==J,$G$9(B)
<P>$B4{$K%9%o%C%W%Q!<%F%#%7%g%s$r@_Dj$7$F$7$^$C$F$$$k>l9g$G$b!"$3$l$r;H$o$J$$(B
$B$h$&$K$9$k$3$H$O$G$-$^$9!#(B<CODE>/etc/rc.d/rc.sysinit</CODE> $B$K$"$k(B swapon $B$r(B
$B8F$S=P$9ItJ,$N@hF,$K(B "#" $B$rIU$1B-$;$P$$$$$N$G$9!#%9%o%C%W$r>o;~%*%U$K$O$7$F$7$^(B
$B$$$?$/$J$$;~$K$O!"%7%9%F%`N)$A>e$2;~$K%9%o%C%W;HMQ$N2DH]$rLd$$9g$o$;$k$h(B
$B$&$K$7$F$*$-$^$7$g$&!#(BRedHat 4.1 $B$N>l9g$K$O(B <CODE>/etc/rc.d/rc.sysinit</CODE>$B!"(BSuse
4.4.1 $B$N>l9g$K$O(B <CODE>/sbin/init.d/boot</CODE> $B$r0J2<$N$h$&$K5-=R$7$^$9!#(B
(Slackware $B$N>l9g$K$O!"(B <CODE>/etc/rc.d/rc.S</CODE> $B$G$9(B)
<P>
<BLOCKQUOTE><CODE>
<PRE>
echo "Should the system use swap?"
echo " 0: No."
echo " 1: Yes."
/bin/echo "Your choice: \c"
read SWAPCHOICE
case "$SWAPCHOICE" in
0)
# Do nothing.
echo "(Swap partitions disabled)"
;;
*)
# Start up swapping.
echo "Activating swap partitions"
swapon -a
esac
</PRE>
</CODE></BLOCKQUOTE>
<P>$B$3$&$7$F$*$1$P!"8rN.EE8;$r;HMQ$7$F$$$k$H$-$K$O%9%o%C%W$rMQ$$!"EECS$r;HMQ(B
$B$7$F$$$k$H$-$K$O%9%o%C%W$rMQ$$$J$$$H$$$C$?$3$H$,2DG=$H$J$j$^$9!#(B
<P>
<H2><A NAME="ss4.6">4.6 apace httpd webserver $B%G!<%b%s(B</A>
</H2>
<P>$BCx<T$O(B Website $BMQ$N(B cgi $B=q<0$N:n@.!&;n83$K%i%C%W%H%C%W$r;HMQ$7$F$$$^$9!#(B
$B%m!<%+%k$N(B Web $B%5!<%P!<$r%i%C%W%H%C%W>e$GN)$A>e$2$F$$$k$N$O$=$N$?$a$J$N(B
$B$G$9!#=q<0$r;n83$7$?$jJG$r;~!98!::$7$?$j$9$k$@$1$N?M$K$H$C$FI8=`@_Dj$O$$(B
$B$5$5$+2a$.$?$k$b$N$G$7$g$&!#(B
<P><CODE>httpd.conf</CODE> $B$K$"$k(B MinSpareServers$B!"(B StartServers $B$NCM$r(B 1 $B$K(B
$BJQ99$7$F$/$@$5$$!#%m!<%+%k$N;n83%5%$%H$K$O$3$l$G==J,$G$7$g$&!#(B
<P>Web $B%5!<%P!<$N%m%0$r<h$k$N$r$d$a$?$$:]$K$O!"(Bhttpd $B%G!<%b%s$r:F%3%s%Q%$%k(B
$B$9$k$7$+<j$,$"$j$^$;$s!#>\$7$/$OEv3:J8=q$r8fFI$_2<$5$$!#(B
<P>
<H2><A NAME="ss4.7">4.7 $B99$J$k:GE,2=$rL\;X$7$F(B</A>
</H2>
<P>Linux $B%7%9%F%`$,$^$@%O!<%I%G%#%9%/$rIQHK$K?($j$K9T$-$9$.$k$h$&$K;W$($k;~(B
$B$K$O!"(Bps ax $B%3%^%s%I$r;H$C$F0lBN2?$,5/$3$C$F$$$k$N$+$rD4$Y$k$H$$$&<j$,$"(B
$B$j$^$9!#$3$NL?Na$O8=:_Av$C$F$$$kA4$F$N%W%m%;%9$r%U%k%M!<%`$GI=<($7$F$/$l(B
$B$^$9!#>l9g$K$h$C$F$O!"3F%W%m%;%9$N%3%^%s%I%i%$%s0z?t$bI=<($5$l$^$9!#(B
<P>($BLuCm(B:$BI=<($,2hLL$N1&C<$G@Z$l$F$7$^$&$H$-$K$O!"(B ps axwww $B$H$7$^$9(B)
<P>$B<!$K3F%W%m%;%9$N%^%K%e%"%k$rFI$s$G!"$=$N@5BN$O2?$+(B?$B!"5sF0$rJQ99$9$k$K$O(B
$B$I$&$9$l$P$$$$$N$+$rD4$Y$F$/$@$5$$!#$3$N<jK!$r;H$($P!"$I$N%W%m%;%9$,%O!<(B
$B%I%G%#%9%/$X$N%"%/%;%9$rIQHK2=$5$;$F$$$k<gHH$+$rFM$-;_$a$k$3$H$,$G$-$k$O(B
$B$:$G$9!#(B
<P>$B?7H/8+$,$"$j$^$7$?$i!"@'HsCx<T$^$G(BE-mail $B$r8fAw$j2<$5$$!#(B
<P>
<P>
<HR>
<A HREF="Battery-Powered-5.html">$B<!$N%Z!<%8(B</A>
<A HREF="Battery-Powered-3.html">$BA0$N%Z!<%8(B</A>
<A HREF="Battery-Powered.html#toc4">$BL\<!$X(B</A>
</BODY>
</HTML>
