00000275.htm

一份很好的linux入门资料

&nbsp;&nbsp;&nbsp;backup&nbsp;count?...OK...darn,&nbsp;where'd&nbsp;I&nbsp;leave&nbsp;the&nbsp;floppies?&quot;)&nbsp;<BR>
&nbsp;&nbsp;&nbsp;OK,&nbsp;guessed&nbsp;I&nbsp;proved&nbsp;that&nbsp;statement&nbsp;wrong.&nbsp;Granted,&nbsp;the&nbsp;quicktime&nbsp;<BR>
&nbsp;&nbsp;&nbsp;movie&nbsp;I'm&nbsp;watching&nbsp;8&nbsp;times&nbsp;is&nbsp;less&nbsp;than&nbsp;20&nbsp;megabytes,&nbsp;so&nbsp;it&nbsp;fits&nbsp;in&nbsp;<BR>
&nbsp;&nbsp;&nbsp;RAM.&nbsp;If&nbsp;I&nbsp;had&nbsp;to&nbsp;wait&nbsp;for&nbsp;my&nbsp;IDE&nbsp;drive&nbsp;to&nbsp;fetch&nbsp;8&nbsp;different&nbsp;movies&nbsp;<BR>
&nbsp;&nbsp;&nbsp;totalling&nbsp;more&nbsp;than&nbsp;my&nbsp;total&nbsp;RAM&nbsp;then&nbsp;I'd&nbsp;have&nbsp;problems&nbsp;under&nbsp;any&nbsp;OS.&nbsp;<BR>
&nbsp;&nbsp;&nbsp;Formatting&nbsp;a&nbsp;floppy&nbsp;and&nbsp;checking&nbsp;email&nbsp;are&nbsp;trivial;&nbsp;moving&nbsp;my&nbsp;mouse&nbsp;<BR>
&nbsp;&nbsp;&nbsp;around&nbsp;and&nbsp;typing&nbsp;uses&nbsp;more&nbsp;CPU&nbsp;time.&nbsp;Unzipping&nbsp;a&nbsp;backup&nbsp;is&nbsp;pretty&nbsp;<BR>
&nbsp;&nbsp;&nbsp;nasty&nbsp;although&nbsp;most&nbsp;of&nbsp;the&nbsp;problem&nbsp;is&nbsp;disk&nbsp;I/O.&nbsp;<BR>
&nbsp;&nbsp;&nbsp;Actually&nbsp;if&nbsp;BeOS&nbsp;has&nbsp;better&nbsp;disk&nbsp;scheduling&nbsp;and&nbsp;buffering&nbsp;than&nbsp;Linux&nbsp;<BR>
&nbsp;&nbsp;&nbsp;(which&nbsp;isn't&nbsp;very&nbsp;hard&nbsp;as&nbsp;Linux's&nbsp;filesystems&nbsp;are&nbsp;very&nbsp;much&nbsp;on&nbsp;the&nbsp;<BR>
&nbsp;&nbsp;&nbsp;&quot;dumb&quot;&nbsp;end&nbsp;of&nbsp;the&nbsp;scale)&nbsp;then&nbsp;it&nbsp;probably&nbsp;does&nbsp;the&nbsp;job&nbsp;better.&nbsp;But&nbsp;<BR>
&nbsp;&nbsp;&nbsp;it's&nbsp;not&nbsp;true&nbsp;that&nbsp;Linux&nbsp;can't&nbsp;do&nbsp;the&nbsp;job&nbsp;at&nbsp;all.&nbsp;<BR>
&nbsp;&nbsp;&nbsp;Some&nbsp;of&nbsp;the&nbsp;claims&nbsp;are&nbsp;pretty&nbsp;funny,&nbsp;like&nbsp;&quot;maximum&nbsp;advantage&nbsp;of&nbsp;any&nbsp;<BR>
&nbsp;&nbsp;&nbsp;number&nbsp;of&nbsp;CPU's&nbsp;without&nbsp;developers&nbsp;having&nbsp;to&nbsp;specifically&nbsp;code&nbsp;in&nbsp;<BR>
&nbsp;&nbsp;&nbsp;multi-proc&nbsp;support.&quot;&nbsp;You&nbsp;need&nbsp;developer&nbsp;cooperation&nbsp;to&nbsp;take&nbsp;maximum&nbsp;<BR>
&nbsp;&nbsp;&nbsp;advantage&nbsp;of&nbsp;multiple&nbsp;CPU's.&nbsp;A&nbsp;certain&nbsp;amount&nbsp;of&nbsp;automation&nbsp;makes&nbsp;<BR>
&nbsp;&nbsp;&nbsp;multiple-CPU&nbsp;designs&nbsp;easier,&nbsp;but&nbsp;most&nbsp;of&nbsp;that&nbsp;automation&nbsp;happens&nbsp;in&nbsp;<BR>
&nbsp;&nbsp;&nbsp;the&nbsp;compiler&nbsp;and&nbsp;libraries&nbsp;(if&nbsp;not&nbsp;the&nbsp;programming&nbsp;language&nbsp;itself),&nbsp;<BR>
&nbsp;&nbsp;&nbsp;not&nbsp;at&nbsp;the&nbsp;OS&nbsp;level.&nbsp;The&nbsp;stuff&nbsp;at&nbsp;the&nbsp;OS&nbsp;level&nbsp;is&nbsp;probably&nbsp;quite&nbsp;<BR>
&nbsp;&nbsp;&nbsp;similar&nbsp;between&nbsp;BeOS&nbsp;and&nbsp;Linux.&nbsp;But&nbsp;then&nbsp;again&nbsp;maybe&nbsp;that&nbsp;was&nbsp;the&nbsp;<BR>
&nbsp;&nbsp;&nbsp;original&nbsp;author's&nbsp;point:&nbsp;BeOS&nbsp;comes&nbsp;with&nbsp;better&nbsp;libraries&nbsp;and&nbsp;<BR>
&nbsp;&nbsp;&nbsp;development&nbsp;tools&nbsp;for&nbsp;multiprocessing.&nbsp;It's&nbsp;important&nbsp;to&nbsp;be&nbsp;clear&nbsp;on&nbsp;<BR>
&nbsp;&nbsp;&nbsp;this&nbsp;so&nbsp;that&nbsp;we&nbsp;can&nbsp;write&nbsp;it&nbsp;up&nbsp;on&nbsp;the&nbsp;OSS&nbsp;To-Do&nbsp;list.&nbsp;;-)&nbsp;<BR>
&nbsp;&nbsp;&nbsp;BMessages&nbsp;and&nbsp;built-in&nbsp;scriptability?&nbsp;Uhhh,&nbsp;like&nbsp;OLE/Gnome/KDE,&nbsp;or&nbsp;<BR>
&nbsp;&nbsp;&nbsp;even&nbsp;Tcl/Tk?&nbsp;(OK,&nbsp;they&nbsp;might&nbsp;be&nbsp;more&nbsp;&quot;elegant&quot;).&nbsp;I'm&nbsp;not&nbsp;even&nbsp;going&nbsp;to&nbsp;<BR>
&nbsp;&nbsp;&nbsp;say&nbsp;the&nbsp;words&nbsp;&quot;Bourne&nbsp;Shell&quot;...D'oh!&nbsp;<BR>
&nbsp;&nbsp;&nbsp;These&nbsp;are&nbsp;not&nbsp;things&nbsp;that&nbsp;should&nbsp;be&nbsp;tied&nbsp;to&nbsp;an&nbsp;OS.&nbsp;Linux,&nbsp;Windows,&nbsp;and&nbsp;<BR>
&nbsp;&nbsp;&nbsp;BeOS&nbsp;are&nbsp;capable&nbsp;of&nbsp;implementing&nbsp;this&nbsp;kind&nbsp;of&nbsp;functionality&nbsp;in&nbsp;user&nbsp;<BR>
&nbsp;&nbsp;&nbsp;space,&nbsp;given&nbsp;a&nbsp;nice&nbsp;abstracting&nbsp;library&nbsp;and&nbsp;adequate&nbsp;shared&nbsp;memory&nbsp;<BR>
&nbsp;&nbsp;&nbsp;support.&nbsp;<BR>
&nbsp;&nbsp;&nbsp;&quot;The&nbsp;days&nbsp;of&nbsp;thinking&nbsp;&quot;one&nbsp;computer,&nbsp;one&nbsp;operating&nbsp;<BR>
&nbsp;&nbsp;&nbsp;system&quot;&nbsp;are&nbsp;over&quot;...uhhh...gee,&nbsp;I&nbsp;was&nbsp;kind&nbsp;of&nbsp;hoping&nbsp;the&nbsp;days&nbsp;of&nbsp;<BR>
&nbsp;&nbsp;&nbsp;thinking&nbsp;&quot;I&nbsp;might&nbsp;have&nbsp;to&nbsp;reboot&nbsp;this&nbsp;machine&nbsp;for&nbsp;reasons&nbsp;other&nbsp;than&nbsp;<BR>
&nbsp;&nbsp;&nbsp;hardware&nbsp;changes&nbsp;or&nbsp;power&nbsp;failure&quot;&nbsp;were&nbsp;over.&nbsp;I&nbsp;don't&nbsp;want&nbsp;multiple&nbsp;<BR>
&nbsp;&nbsp;&nbsp;OSes&nbsp;on&nbsp;one&nbsp;machine.&nbsp;I&nbsp;don't&nbsp;even&nbsp;want&nbsp;a&nbsp;single&nbsp;OS&nbsp;on&nbsp;one&nbsp;machine.&nbsp;As&nbsp;<BR>
&nbsp;&nbsp;&nbsp;a&nbsp;consumer&nbsp;(i.e.&nbsp;not&nbsp;doing&nbsp;my&nbsp;paying&nbsp;software&nbsp;development&nbsp;job,&nbsp;but&nbsp;<BR>
&nbsp;&nbsp;&nbsp;simply&nbsp;buying&nbsp;consumer&nbsp;electronics&nbsp;and&nbsp;using&nbsp;them)&nbsp;I&nbsp;want&nbsp;lots&nbsp;of&nbsp;<BR>
&nbsp;&nbsp;&nbsp;cheap&nbsp;little&nbsp;machines&nbsp;doing&nbsp;cheap&nbsp;little&nbsp;tasks,&nbsp;and&nbsp;I&nbsp;don't&nbsp;care&nbsp;if&nbsp;<BR>
&nbsp;&nbsp;&nbsp;they're&nbsp;all&nbsp;running&nbsp;one&nbsp;OS&nbsp;each&nbsp;or&nbsp;one&nbsp;OS&nbsp;for&nbsp;all&nbsp;of&nbsp;them&nbsp;as&nbsp;long&nbsp;as&nbsp;<BR>
&nbsp;&nbsp;&nbsp;they&nbsp;work&nbsp;and&nbsp;as&nbsp;long&nbsp;as&nbsp;they&nbsp;are&nbsp;extensible&nbsp;through&nbsp;addition&nbsp;of&nbsp;<BR>
&nbsp;&nbsp;&nbsp;third-party&nbsp;software.&nbsp;Argh...I&nbsp;think&nbsp;I&nbsp;just&nbsp;said&nbsp;I&nbsp;wanted&nbsp;Java.&nbsp;<BR>
&nbsp;<BR>
&nbsp;&nbsp;&nbsp;Zygo&nbsp;Blaxell&nbsp;-&nbsp;Subject:&nbsp;And&nbsp;now&nbsp;that&nbsp;I've&nbsp;read&nbsp;the&nbsp;comparison&nbsp;chart...&nbsp;<BR>
&nbsp;&nbsp;&nbsp;(1998-12-09&nbsp;13:41:18)&nbsp;<BR>
&nbsp;&nbsp;&nbsp;This&nbsp;is&nbsp;a&nbsp;significant&nbsp;beef&nbsp;with&nbsp;me:&nbsp;Perceived&nbsp;installation&nbsp;complexity&nbsp;<BR>
&nbsp;&nbsp;&nbsp;on&nbsp;supported&nbsp;hardware.&nbsp;<BR>
&nbsp;&nbsp;&nbsp;In&nbsp;the&nbsp;past&nbsp;year&nbsp;I've&nbsp;installed&nbsp;and&nbsp;configured&nbsp;five&nbsp;Linux&nbsp;servers&nbsp;(two&nbsp;<BR>
&nbsp;&nbsp;&nbsp;at&nbsp;work,&nbsp;two&nbsp;at&nbsp;home,&nbsp;one&nbsp;owned&nbsp;by&nbsp;colleagues).&nbsp;In&nbsp;each&nbsp;case&nbsp;the&nbsp;<BR>
&nbsp;&nbsp;&nbsp;installation&nbsp;process&nbsp;was:&nbsp;insert&nbsp;CD,&nbsp;power&nbsp;on,&nbsp;accept&nbsp;default&nbsp;<BR>
&nbsp;&nbsp;&nbsp;settings,&nbsp;wait&nbsp;for&nbsp;colorful&nbsp;bar&nbsp;graphs&nbsp;to&nbsp;go&nbsp;by,&nbsp;remove&nbsp;CD,&nbsp;reboot.&nbsp;<BR>
&nbsp;&nbsp;&nbsp;Heck,&nbsp;I&nbsp;was&nbsp;able&nbsp;to&nbsp;network-boot&nbsp;a&nbsp;Sparcstation&nbsp;running&nbsp;Linux/sparc&nbsp;<BR>
&nbsp;&nbsp;&nbsp;without&nbsp;much&nbsp;trouble&nbsp;(assuming&nbsp;you&nbsp;know&nbsp;how&nbsp;to&nbsp;network-boot&nbsp;a&nbsp;<BR>
&nbsp;&nbsp;&nbsp;Sparcstation&nbsp;in&nbsp;the&nbsp;first&nbsp;place,&nbsp;which&nbsp;can&nbsp;be&nbsp;_heavily_&nbsp;geekish,&nbsp;<BR>
&nbsp;&nbsp;&nbsp;installing&nbsp;Linux&nbsp;instead&nbsp;of&nbsp;Solaris&nbsp;is&nbsp;a&nbsp;simple&nbsp;matter&nbsp;of&nbsp;substituting&nbsp;<BR>
&nbsp;&nbsp;&nbsp;CD's&nbsp;on&nbsp;the&nbsp;network&nbsp;server).&nbsp;<BR>
&nbsp;&nbsp;&nbsp;I've&nbsp;also&nbsp;attempted&nbsp;to&nbsp;install&nbsp;Solaris&nbsp;and&nbsp;QNX&nbsp;on&nbsp;a&nbsp;i386&nbsp;machine&nbsp;using&nbsp;<BR>
&nbsp;&nbsp;&nbsp;my&nbsp;choice&nbsp;of&nbsp;partitioning.&nbsp;In&nbsp;one&nbsp;case&nbsp;it&nbsp;was&nbsp;necessary&nbsp;to&nbsp;move&nbsp;the&nbsp;<BR>
&nbsp;&nbsp;&nbsp;CD-ROM&nbsp;drive&nbsp;to&nbsp;a&nbsp;different&nbsp;IDE&nbsp;interface,&nbsp;while&nbsp;the&nbsp;other&nbsp;case&nbsp;<BR>
&nbsp;&nbsp;&nbsp;required&nbsp;changing&nbsp;the&nbsp;partition&nbsp;table&nbsp;in&nbsp;a&nbsp;very&nbsp;inconvenient&nbsp;way.&nbsp;Both&nbsp;<BR>
&nbsp;&nbsp;&nbsp;of&nbsp;these&nbsp;OS's&nbsp;are&nbsp;no-brainers&nbsp;to&nbsp;install&nbsp;on&nbsp;blank&nbsp;hard&nbsp;disks&nbsp;but&nbsp;<BR>
&nbsp;&nbsp;&nbsp;trying&nbsp;to&nbsp;install&nbsp;on&nbsp;an&nbsp;existing&nbsp;system&nbsp;is&nbsp;a&nbsp;nightmare.&nbsp;<BR>
&nbsp;&nbsp;&nbsp;Be&nbsp;might&nbsp;have&nbsp;this&nbsp;sort&nbsp;of&nbsp;thing&nbsp;down&nbsp;to&nbsp;a&nbsp;fine&nbsp;art,&nbsp;but&nbsp;Linux&nbsp;is&nbsp;a&nbsp;<BR>
&nbsp;&nbsp;&nbsp;close&nbsp;second.&nbsp;<BR>
&nbsp;&nbsp;&nbsp;Is&nbsp;Linux&nbsp;actually&nbsp;POSIX-certified&nbsp;now?&nbsp;I&nbsp;thought&nbsp;it&nbsp;was&nbsp;still&nbsp;trying&nbsp;<BR>
&nbsp;&nbsp;&nbsp;to&nbsp;get&nbsp;certification&nbsp;but&nbsp;didn't&nbsp;have&nbsp;it&nbsp;yet.&nbsp;Or&nbsp;am&nbsp;I&nbsp;thinking&nbsp;of&nbsp;<BR>
&nbsp;&nbsp;&nbsp;Caldera's&nbsp;X/Open&nbsp;Unix&nbsp;certification?&nbsp;<BR>
&nbsp;&nbsp;&nbsp;I&nbsp;wouldn't&nbsp;say&nbsp;porting&nbsp;BeOS&nbsp;is&nbsp;easier&nbsp;than&nbsp;porting&nbsp;Linux&nbsp;to&nbsp;new&nbsp;CPU&nbsp;<BR>
&nbsp;&nbsp;&nbsp;architectures&nbsp;until&nbsp;I&nbsp;had&nbsp;done&nbsp;both.&nbsp;Porting&nbsp;an&nbsp;OS&nbsp;to&nbsp;a&nbsp;different&nbsp;CPU&nbsp;<BR>
&nbsp;&nbsp;&nbsp;architecture&nbsp;means&nbsp;rewriting&nbsp;basic&nbsp;memory&nbsp;management&nbsp;and&nbsp;IRQ&nbsp;stuff,&nbsp;<BR>
&nbsp;&nbsp;&nbsp;device&nbsp;drivers,&nbsp;any&nbsp;code&nbsp;with&nbsp;register-size&nbsp;and&nbsp;byte-sex&nbsp;issues,&nbsp;and&nbsp;<BR>
&nbsp;&nbsp;&nbsp;any&nbsp;assembly&nbsp;language&nbsp;in&nbsp;your&nbsp;run-time&nbsp;libraries.&nbsp;This&nbsp;takes&nbsp;<BR>
&nbsp;&nbsp;&nbsp;person-*years*&nbsp;of&nbsp;time&nbsp;for&nbsp;an&nbsp;OS&nbsp;and&nbsp;enough&nbsp;tools&nbsp;to&nbsp;develop&nbsp;<BR>
&nbsp;&nbsp;&nbsp;applications.&nbsp;<BR>
&nbsp;&nbsp;&nbsp;I'd&nbsp;like&nbsp;to&nbsp;see&nbsp;if&nbsp;POSIX-compliant&nbsp;programs&nbsp;can&nbsp;&quot;take&nbsp;full&nbsp;advantage&nbsp;<BR>
&nbsp;&nbsp;&nbsp;of&nbsp;any&nbsp;number&nbsp;of&nbsp;processors&nbsp;automatically,&quot;&nbsp;or&nbsp;only&nbsp;BeOS-specific&nbsp;<BR>
&nbsp;&nbsp;&nbsp;ones.&nbsp;<BR>
&nbsp;<BR>
===================&nbsp;End&nbsp;of&nbsp;readers'&nbsp;comments=====================&nbsp;<BR>
&nbsp;&nbsp;Then&nbsp;what's&nbsp;your&nbsp;comment?&nbsp;Come&nbsp;on&nbsp;to&nbsp;tell&nbsp;it&nbsp;on&nbsp;SMTH/Linux....:)&nbsp;<BR>
--&nbsp;<BR>
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|&nbsp;以无法为有法&nbsp;，&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;|&nbsp;&nbsp;拳本无法，有法也空；&nbsp;&nbsp;|&nbsp;&nbsp;我爱GNU/Linux,&nbsp;&nbsp;&nbsp;&nbsp;|&nbsp;<BR>
|&nbsp;&nbsp;&nbsp;以无限为有限&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;|&nbsp;&nbsp;&nbsp;&nbsp;一法不立，无法不容。|&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;因为我爱自由！&nbsp;|&nbsp;<BR>
|&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;|&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;|&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;|&nbsp;<BR>
|&nbsp;&nbsp;&nbsp;截拳道宗师-李小龙&nbsp;&nbsp;|&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;意拳宗师-王芗斋&nbsp;|&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;土人&nbsp;&nbsp;Linuxrat&nbsp;|&nbsp;<BR>
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※&nbsp;来源:·BBS&nbsp;水木清华站&nbsp;smth.org·[FROM:&nbsp;202.112.168.252]&nbsp;<BR>


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