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GNU/Linux Optimization for Embedded Systems

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(60)   uv$  \' ;Ô-. ij\rZ`]9‚âãäå' *m“H-ڑ ! ij* lilo.confde ñ syslinux.cfg. . ij-¾ c°CGڑ !4‚‚Kd. ¼†›/¢ ¦±„/½2NJ¾‚¿ÀÁj¥„£ÂM Ã*¡TÄT c?™cUÅÆ( @!ŽÇ"O >?>ID¿ÀÁj¥ 8D¸È[[_`SSaaa?UVWZ zc™?cbdS—É^S cc[Êbc\_[Z—É^?[\ËJ 4>?. pÌ%Í5/†.†‡v­¯;'Î J‚‚ž ›Æ($%&;Ì%"¹//½vÏD>? ÐÆ($%&;”¹2EÌ% 4LÑÒ„ ŽD>?Æ($%&„Ì%//½2*» «Ó 4*¡Ô·ÕÖ/×Ì%Ø> ÙÚÛÐË $%&ܲ5/Úۋoj45 ¡ »·Õ¦±Ö/×Ì%/†.ÝÞO#߯( $%&„/½2àÌ%/áGJ/½oj45 â/Ì%Í Ø>ãäÆ(¥„å<æj4 ÐË>?. e CG¨q^a9CI$ň8ËXڑ ¼‚àNa„Qfë<^a3!Úè= qî¯ c°CG DEFAULT rescue LABEL rescue KERNEL kernel APPEND vga=normal load_ramdisk=1 prompt_ramdisk=0 ramdisk_size=2800 initrd=rescue.gz root=/dev/ram0 rw .

(61)  !"#$%&'$&()***+%*,. DISPLAY message.txt. Jan 1 1970 ./. PROMPT 1. drwxr-xr-x 27 root. ®Åsyslinux.cfgqf]:l-] RcCI$Å\’/XCGŽ-]]1Kø 8`c *¿ SF\z*:B:# ±B ldlinux.sysqÀa^\]9\±*m° ¼‚àNa :#*µ!syslinux.cfgij-î¯ ./0 -28XCG®P2^<¬6æ¶JÚè cC I$ÅC6õö!õN7G •. •.

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(63)  F‹\ ° HI< UÁ#* *m1. 4096. root. 658523. root. 5860. Jun 23 16:42 ../ -rwxrwxr-x 1 root Jun 24 14:57 kernel -r-xr-xr-x 1 root. Jun 24 14:43 ldlinux.sys -rwxrwxr-x 1 root. root. 858. Jun 24 14:58 message.txt -rwxrwxr-x 1 root. %`#ˆ*ڑ`!:l' 

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(65) F‹< —5`a3!k\CDEFAULT rescueG. root. root. 982177. Jun 24 14:56 rescue.gz -rwxrwxr-x 1 root. root. 527. Jun 24 15:15 syslinux.cfg. ' \BÂ

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(71) Gåij-Üc<R. ¢CDISPLAY message.txtG.  \–„=<= ÚèXk$ÅCG' . JML UVq  ] V%! N9öö1\C load_ramdisk=1 ramdisk_size=2,800G. V%b'%ÙßàNá‚âãäå<Çiì'. •. • JMLUV\–fq»*¿ U«-Ä. ƒ„Qf<=ßàNá‚âãäåqÛ#Ü ! ‚âãäåNGNGõFq@ij .gªk\]9 SU (i ­Yq ®6  ]. ! k\% ±²<. ' Û#Üq1{WÀˆ89%Ù' @ij. n F!)¹)#qR.7fr!Cprompt_ ramdisk=0G. ‚-+¬* fg9JMLUVJMLU. • JMLUV*j%Ü*m1ÅÆij res-. Vj%Üinitrd‚$‚  Âpf. cue.gz\]9ï#ij'®p!JMLU. ‚  .× XCG +—×g JML UV. V\Cinitrd=root.lrp root=/dev/ram0G • :l`! ’Ò< boot: )¹)#q É 4. <ï#ij-YZ .:l-L23. 5 .a‘‚M1 ‚'' -*m1kžfn o12345XCPROMPT 1G ƒ„Qf^a3!L!ƒKU«< !CI$Åij^\^a3CG. %±²\CG €F=ƒ<='ø#žÛ#Ü!ï#i j-YZ1=’ij^'V%qÆ[Q !k\CG'¶<zo`a3!ij"5<= rescue.gzJMLUV<Úp©ij \ ^a3! ij\]9\k' V%qÆ[L. $ mount –t msdos –o rw /dev/fd0H1722. Oª ^-’ c`!k\CG.%< #. /mnt/fdd. `a3!Û#Ü'^\–„=ÚèX. $ cd /mnt/fdd. 'Oª‹^\CG \^Û#Ü'Xf¨*=ƒ! 1ä!. $ ls -al total 1622 drwxrwxr-x 2 root . root. 7168. 1 åq .‡(s)Û#Üq ]3 ]9init)*Ëqø8Q%®6/etc/init-.

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(75) -f fr45`a3a. ©2345 %®6ÅÆ .×XCG. *+ž “H4 f f r!CG \ ±²< œâã!. \kñg^af!ijï#Ys. ‚ MâãÛ#Üq\1{W!ÀCG rescue.gz!CI$ÅU/0sYZ‡. jbqY .=*CDüXˆ*. (s)T(ij^*YZ`a3CG. $ÅŠ2X“H<=!,É ñ 1u\CG. $ cd rescue.tmp. +—= genext2fs )*+,- \ . jb. $ dir –l. üX'

(76) åNij-g^ajb. total 52 drwxr-xr-x 2 root. root. 4096. 4pÊSqg^23!—'j\& 45XCGrescue.gzij rescue.tmpU/. root. 4096. 0së<^a3!OªU/0sij^-C I$Å genext2fsèDˆ*jbüX. root. 8192. root. 4096. $ genext2fs –r 0 –i 600 –b 2800 –d. 4096. $ gzip –9 rescue. Jun 18 10:30 bin drwxr-xr-x 2 root Jun 11 08:06 boot drwxr-xr-x 2 root Apr 15 05:35 dev drwxr-xr-x 2 root. root root. 4096. root. 4096. root. 4096. root. 4096. root. 4096. root. 4096. root. 4096. Aug 15 1998 proc drwxr-xr-x 3 root Dec 15 1999 root drwxr-xr-x 2 root Jun 18 09:01 sbin drwxr-xr-x 2 root Jan 9 1999 tmp drwxr-xr-x 7 root Jun 18 23:35 usr drwxr-xr-x 5 root. -rw-rw-r-- 1 root. root. 982177. Jun 24 14:54 rescue.gz. Dec 7 1999 mnt drwxr-xr-x 2 root. Xk\CG. $ ls –al rescue.gz. Jun 19 23:46 lib drwxr-xr-x 9 root. '

(77) åNijÚpij*g^a=ÅÆ. rescue.tmp rescue. Jun 10 07:09 etc drwxr-xr-x 3 root. - 45YZ`%±²<Y1{WÀ!. Feb 8 18:41 var. genext2fs<=–r‚¨Œ1Ë5'2q zh]9-i‚âã

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(79) åNˆ*#°CG ƒ' /etc/mtab' <! CI$ Å\ ^a3CG. ƒ<=! rescue.gz ij- g^% ®6 genext2fsF! ø8 )*+,- \ ] 3CG. /dev/ram0 / ext2 rw 0 0. ®' ¨ Å U/0sq g^] Û#Ü %ó-. Proc /proc proc defaults 0 0. /etc/fstab'-fgRcCI$ÅCG. .

(80)  !"#$%&'$&()***+%*,.      . May 29 1999 ldlinux.sys -rwxrwxr-x 1 root. ‚J>!õGFFL1U«X<Û['ßàNá. May 29 1999 linux. ‚âãäå-YZ123!' 9‡(. -rwxrwxr-x 1 root. s)T(-q]3ˆ89ø|fš*Y. -rwxrwxr-x 1 root. -f][FIB*g^2345. -rwxrwxr-x 1 root. €F=‚J>™4ƒ'HI[f*. -rwxrwxr-x 1 root. 'U«ˆ*:BßàNá‚âãäå:l-. -rwxrwxr-x 1 root. Ð!õGžNNL1L!ƒKU«X<Û[ß. 628. root. 52302. root. 782604. root. 179. Jun 23 16:52 syslinux.cfg. àNá‚âãäå - YZ1 2 345 Û#Ü !. -rwxrwxr-x 1 root. k\CG. root. 515. Jun 23 16:51 syslinux.dpy ‚J><^a3! syslinux.cfg' - R. &01 &01. cCI$ÅCG. ‚J>q®6 !U«'ij4. DISPLAY syslinux.dpy. ƒ'HIÅ\L!ƒK- ]3. TIMEOUT 0. ˆ89L!ƒK*¿U«ˆ*:BßàNá‚âãäå. DEFAULT linux. q*m %®6¼‚àNa:#*µq. APPEND=load_ramdisk=1 initrd=root.lrp. XCG. initrd_archive=minix ram-. ‚J>U«<!CI$Åij^\^a 3 ˆ89 lrp "q » ij^ tar* @.ù. disk_size=4096 root=/dev/ram0 boot=/dev/fd0,msdos. gzipˆ*ÅÆ`a 3!ˆ* \ïaù3CG 9*.lrp!*.tar.gzUŽJÌÅCG $ mount –t msdos –o rw /dev/fd0 /mnt/fdd $ cd /mnt/fdd $ ls -al total 1222 root. 7168. root. 4096. Jan 1 1970 ./ Jun 23 16:42 ../ root root. LRP=etc,log,local,modules ®Åsyslinux.cfgqf]:l-] RcCI$Å\’/XCGŽ-]]1Kø 8`c *¿ SF\z*:B :# ±B ldlinux. sysqÀa^.¼‚àNa:#*µq* m ]9\± :#*µ! syslinux.cfg ijî¯ . /0- 28XCG CI$ Å ‹^\ ‘'`a3C6õö!õN7G •. :l`! ’Ò syslinux.dpy ij- Üc< R.¢CDISPLAY syslinux.dpyG. •. *m¬' - %®6­ ! boot:. 32889. May 29 1999 etc.lrp. . root. May 29 1999 root.lrp. 12345 !k\]9CDXf!õGFFL1. -r-xr-xr-x 1 root. 488. Jun 23 16:46 modules.lrp. +fY;<=‰23!9Xf!L!ƒK. -rwxrwxr-x 1 root. root. May 29 1999 log.lrp. %®6gªk\C6õh7G. drwxr-xr-x 27 root. 362995. May 29 1999 local.lrp. <GÖù3!ž§öh9öF$ÅY. drwxrwxr-x 2 root. root. 5476. . )¹)#<=no¬%æ-7fr4.

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(82) . •. 5XCG9noÀ\CI¶”*²a æC! \CTIMEOUT 0G. /dev/ram0 /. UÁ#**m1' '\Blinux\CG. proc. NÇ'ƒ HI<=! UÁ#* ø81 k\ rescue F‹- » :\89 rescue F‹< 3!KERNELP2<#Í3!ij\B-' . <type> <options> <dump> <pass> minix. rw. /proc proc noauto 0 0. &01 &01"#$%&'()*

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(84) ‚J>!ßàNá‚âãäå<¬X(i ­Y. *=*mXC! \CG+z‚J>'HI<= ! DEFALUTP2<=*m1' 'ij\B. \lPFjb>?qFIB¢*gS!4\. -É 45 ]3CG€F= DEFAULTP2 ! LABEL\3”•À”•<€FŒæCD'. ]3CG. –q»CDEFAULT linuxG. %±²<ƒ!ŒæCDÛ#Ü- ‚J><=!ßàNá‚âãäåFIB- ] %±²<~‡(s){WÀ a/bin$/sbinU/0s</2'‡. •. JML UVq  ] V%! F9ö&1\C load_ramdisk=1 ramdisk_size=4096G. •. ï#ijJMLUVq ]9:. (s)q< ]3ˆ89:#ˆ*}#~VY. l1±JMLUV*j%Ü*m1ÅÆij  root.lrp\]9JMLUV< 3!ï# i. s ‡(s)^- _] 3CG €F= 1ä1 åq \1{WÀ!kˆ*RžCG. j\1ij'’“!minix \Croot=/dev/ram0 initrd = root. lrp. *+ž-®6œâã‚ Mâã-\XÛ# Ü! fr]3ˆzCI$ÅÛ['*+. initrd _archive =minixG. ž“H-g^a ]3CG. • ‚J>-YZ. %®6ï#ijˆ **m1ij^etc.lrp9log.lrp9local.. lrp9modules.lrp\CG •. :l®p!*¿UVSF\z\89 L!ƒKijˆ*\ïaù3CG\® pqݎc SUV*:B:l-/ 4 5 1 2 3CG 9 *¿ U«ˆ*:B ¼ ‚àNa:#*µqÀa^ž<bootP2< f‘°[<=' $ijT+ { WX ij^- *m 45 ! k\Cboot=/ dev/fd0,msdosG. $ ls -al ./bin/login ./usr/bin/passwd . /sbin/getty -rwxr-xr-x 1 root root 22968 Nov 3 1998 ./bin/login -rwxr-xr-x 1 root root 12156 Mar 10 1999 ./sbin/getty lrwxrwxrwx 1 root root 15 Jun 26 13: 19 ./usr/bin/passwd -> ../../bin/login F\zs Û#Üq ®6 < {W À! ~F\zsq. ]3ˆz‚J>FIB. syslinux.cfg ij<= ßàNá‚âãäå .  ‡(s)< {WX F\zsq ¾#ˆ*. \1ijˆ* âãâåq Î%± ²</etc/fstab'<4\k-É !.  ] 3a ƒRC ~ ’“' k- . \l—'¨Å\^a×XCG # /etc/fstab: static file system in-. ‚J>'' ‚âãäåNGöGh

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(86)  !"#$%&'$&()***+%*,. !"#. $ ls -sh linux 360k linux ßàNá‚âãäå ' Û#Ü! ƒ ‚J> ™<=Å\"#$%&<€FC¸X-. çè Vs cW¡[[_`SS˜Vs˜cW?UYc?™c\S çè^UsTcdU¡[[_`SS[UscdU?UYc?™c\S çkè¡[[_`SSaaa?zY˜U?cbdSÊ™dYSVU[˜YSY S?[\. ;6\ïa»CG. ç è]séU[¡Å[_`SSÅ[_?™[bcU?US_V˜S_Yc_YS\êVYSs éU[S.    . çtèPYbbz YY\U¡ëc\_Yb_[\l[cU¡[[_`SS aaa?UVWÅbc\™b[™?cbdSéYaS.  - ®X ßàNá‚âãäå' Û#Ü  ‡(s)TF\zs^-&XX /V%*gS!<ψ\3CG\<€FN Ç<=‡(s)Û#Ü9¶·Ü°:l9' Û#Ü9F\zsÛ#Ü9@ijÛ#Ü— '^-fgRÐCG ! ' "#$. %&ŠZ<€FÒI`!k\Ø*RCA$#ˆ *Û#Ü %®6=!ŠZ-Ó_]Ö !k\†CG+x$<€F|'–XÛ#ÜÍ Ô©23arÕ1243]9OªÛ#Ü%óC’6×1243ˆ893¬Ö#\a= 6× !k43-23CG \XÛ#Ü%ó-;6-¬ %gשßàN á‚âãäå\†IX#ž S‰a’/“H ë<=4©2345g^23CG. . bY™céYbsSíÄQîï?[\ . çxè^c\a™Y[[¡ ^YTUVW cc[z—É^¡[[_` SSaaa?ZUVWzc™?cbdS—É^S cc[zZ—É^S UzYW?[\ çyèðŽ°¡ðŽñ¡PQRSTUVW$%&†‡Œ¡ppp? x? ? . \XÛ#Ü'^jÑ#ˆ*ÌÅ\# `! k\ lPF "É*. ç è ìÄ]š¡ [[_`SS\Y[˜?VU™?YzVS_V˜STUVWSs[Y\S. ç¼è—?ÊY[YbUéU¡ ]ò]TÄQRï cc[TczYbÅcbTUVW RUd]Z]c__Y? çpèÉYbUYb\Y˜YbdYb¡TÄTRYbPVzY¡Å[_`SS \Y[˜?VU™?YzVS_V˜STUVWSs[Y\S˜cc[ScS . çèÊVPcb[\Yb¡ ^YTUVW cc[Êbc\_[Z—É^¡ [[_`SSaaa?UVWzc™?cbdS—É^S cc[Êbc\_[Z— É^?[\ çèRUd[Y c™Yé™Ya[TUVW¡SVbS b™SUVWSc™V\YU[[cUSb\z?[W[ çkèTÊTUVWcV[YbÊbcóY™[¡[[_`SSaaa?UVWZbcV[Yb? cbdS.

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