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一份很好的linux入门资料

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;_________________________________________________________________&nbsp;<BR>
&nbsp;<BR>
&nbsp;&nbsp;&nbsp;Note&nbsp;3&nbsp;<BR>
&nbsp;<BR>
&nbsp;&nbsp;&nbsp;The&nbsp;Vendor&nbsp;Impact&nbsp;<BR>
&nbsp;<BR>
&nbsp;&nbsp;&nbsp;1.&nbsp;SCO&nbsp;and&nbsp;Solaris&nbsp;(Intel)&nbsp;target&nbsp;the&nbsp;heavily&nbsp;replicated&nbsp;Intel&nbsp;server&nbsp;<BR>
&nbsp;&nbsp;&nbsp;market&nbsp;with&nbsp;branded&nbsp;Unix&nbsp;OSs.&nbsp;This&nbsp;model&nbsp;falls&nbsp;apart&nbsp;under&nbsp;the&nbsp;more&nbsp;<BR>
&nbsp;&nbsp;&nbsp;attractive&nbsp;Linux&nbsp;positioning&nbsp;presented&nbsp;in&nbsp;this&nbsp;Research&nbsp;Note.&nbsp;<BR>
&nbsp;<BR>
&nbsp;&nbsp;&nbsp;2.&nbsp;Neither&nbsp;IBM,&nbsp;HP,&nbsp;Compaq&nbsp;nor&nbsp;SGI&nbsp;can&nbsp;accept&nbsp;the&nbsp;complementary&nbsp;<BR>
&nbsp;&nbsp;&nbsp;strategy,&nbsp;since&nbsp;RISC&nbsp;Unix&nbsp;at&nbsp;the&nbsp;low&nbsp;end&nbsp;will&nbsp;eventually&nbsp;be&nbsp;starved&nbsp;<BR>
&nbsp;&nbsp;&nbsp;out&nbsp;by&nbsp;the&nbsp;better&nbsp;price/performance&nbsp;of&nbsp;Intel,&nbsp;although&nbsp;support&nbsp;<BR>
&nbsp;&nbsp;&nbsp;requirements&nbsp;will&nbsp;increase.&nbsp;While&nbsp;Unix&nbsp;will&nbsp;survive&nbsp;on&nbsp;Intel,&nbsp;it&nbsp;will&nbsp;<BR>
&nbsp;&nbsp;&nbsp;not&nbsp;survive&nbsp;well&nbsp;on&nbsp;low-end&nbsp;IA-32&nbsp;hardware&nbsp;against&nbsp;Windows&nbsp;2000,&nbsp;Linux&nbsp;<BR>
&nbsp;&nbsp;&nbsp;or&nbsp;Novell.&nbsp;<BR>
&nbsp;<BR>
&nbsp;&nbsp;&nbsp;3.&nbsp;As&nbsp;Linux&nbsp;is&nbsp;increasingly&nbsp;accepted&nbsp;for&nbsp;Unix&nbsp;at&nbsp;the&nbsp;low&nbsp;end&nbsp;and&nbsp;<BR>
&nbsp;&nbsp;&nbsp;midrange,&nbsp;RISC-based&nbsp;architectures&nbsp;will&nbsp;come&nbsp;under&nbsp;increased&nbsp;pressure&nbsp;<BR>
&nbsp;&nbsp;&nbsp;by&nbsp;2003,&nbsp;since&nbsp;Intel&nbsp;will&nbsp;fill&nbsp;out&nbsp;both&nbsp;the&nbsp;low&nbsp;and&nbsp;the&nbsp;high&nbsp;end&nbsp;with&nbsp;<BR>
&nbsp;&nbsp;&nbsp;IA-64&nbsp;technology,&nbsp;and&nbsp;the&nbsp;Linux&nbsp;movement&nbsp;will&nbsp;spread&nbsp;OSS&nbsp;applications&nbsp;<BR>
&nbsp;&nbsp;&nbsp;across&nbsp;a&nbsp;fuller&nbsp;spectrum.&nbsp;<BR>
&nbsp;<BR>
&nbsp;&nbsp;&nbsp;4.&nbsp;Unix&nbsp;vendors&nbsp;can&nbsp;choose&nbsp;either&nbsp;to&nbsp;provide&nbsp;an&nbsp;Internet&nbsp;version&nbsp;of&nbsp;<BR>
&nbsp;&nbsp;&nbsp;their&nbsp;branded&nbsp;Unix&nbsp;at&nbsp;virtually&nbsp;no&nbsp;cost,&nbsp;including&nbsp;OSS-ported&nbsp;<BR>
&nbsp;&nbsp;&nbsp;applications,&nbsp;or&nbsp;to&nbsp;turn&nbsp;to&nbsp;Linux&nbsp;as&nbsp;an&nbsp;attempt&nbsp;to&nbsp;weave&nbsp;Linux&nbsp;into&nbsp;<BR>
&nbsp;&nbsp;&nbsp;their&nbsp;hardware&nbsp;and&nbsp;software&nbsp;architectures&nbsp;(e.g.,&nbsp;a&nbsp;common&nbsp;management&nbsp;<BR>
&nbsp;&nbsp;&nbsp;framework).&nbsp;<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;_________________________________________________________________&nbsp;<BR>
&nbsp;<BR>
&nbsp;&nbsp;&nbsp;4.&nbsp;Linux&nbsp;will&nbsp;not&nbsp;displace&nbsp;Unix&nbsp;wholesale&nbsp;from&nbsp;the&nbsp;high-end&nbsp;market&nbsp;in&nbsp;<BR>
&nbsp;&nbsp;&nbsp;the&nbsp;next&nbsp;three&nbsp;to&nbsp;five&nbsp;years&nbsp;because:&nbsp;Unix&nbsp;is&nbsp;well-entrenched&nbsp;legacy&nbsp;<BR>
&nbsp;&nbsp;&nbsp;technology,&nbsp;Linux&nbsp;is&nbsp;not&nbsp;easily&nbsp;portable&nbsp;to&nbsp;RISC&nbsp;architectures&nbsp;and&nbsp;<BR>
&nbsp;&nbsp;&nbsp;would&nbsp;represent&nbsp;the&nbsp;same&nbsp;kind&nbsp;of&nbsp;fragmentation&nbsp;that&nbsp;Unix&nbsp;has,&nbsp;Linux&nbsp;<BR>
&nbsp;&nbsp;&nbsp;would&nbsp;complicate&nbsp;existing&nbsp;OS&nbsp;heterogeneity&nbsp;problems,&nbsp;and&nbsp;Linux&nbsp;<BR>
&nbsp;&nbsp;&nbsp;currently&nbsp;lacks&nbsp;a&nbsp;fast-track&nbsp;process&nbsp;to&nbsp;achieve&nbsp;mission-critical&nbsp;<BR>
&nbsp;&nbsp;&nbsp;enhancements&nbsp;equivalent&nbsp;to&nbsp;those&nbsp;offered&nbsp;by&nbsp;Unix&nbsp;vendors.&nbsp;<BR>
&nbsp;<BR>
&nbsp;&nbsp;&nbsp;5.&nbsp;The&nbsp;Linux&nbsp;service/support&nbsp;model&nbsp;is&nbsp;limited&nbsp;to&nbsp;the&nbsp;OS&nbsp;and&nbsp;<BR>
&nbsp;&nbsp;&nbsp;surrounding&nbsp;infrastructure.&nbsp;This&nbsp;support&nbsp;is&nbsp;usually&nbsp;available&nbsp;in&nbsp;most&nbsp;<BR>
&nbsp;&nbsp;&nbsp;enterprises&nbsp;(through&nbsp;Unix&nbsp;and&nbsp;NT&nbsp;experience);&nbsp;most&nbsp;added-value&nbsp;support&nbsp;<BR>
&nbsp;&nbsp;&nbsp;is&nbsp;for&nbsp;the&nbsp;OS&nbsp;and&nbsp;future&nbsp;enhancements&nbsp;and&nbsp;upgrades,&nbsp;which&nbsp;vendors&nbsp;can&nbsp;<BR>
&nbsp;&nbsp;&nbsp;outsource&nbsp;to&nbsp;Linux&nbsp;distributors&nbsp;and&nbsp;vendors.&nbsp;Linux&nbsp;reliability&nbsp;and&nbsp;<BR>
&nbsp;&nbsp;&nbsp;remote&nbsp;support&nbsp;(through&nbsp;its&nbsp;modular&nbsp;nature)&nbsp;will&nbsp;lessen&nbsp;the&nbsp;need&nbsp;for&nbsp;<BR>
&nbsp;&nbsp;&nbsp;24x7&nbsp;service&nbsp;and&nbsp;support,&nbsp;but&nbsp;the&nbsp;burgeoning&nbsp;acceptance&nbsp;of&nbsp;Linux&nbsp;can&nbsp;<BR>
&nbsp;&nbsp;&nbsp;still&nbsp;support&nbsp;several&nbsp;quality&nbsp;Linux&nbsp;vendors&nbsp;in&nbsp;addition&nbsp;to&nbsp;the&nbsp;Unix&nbsp;<BR>
&nbsp;&nbsp;&nbsp;vendor&nbsp;community&nbsp;(especially&nbsp;where&nbsp;global&nbsp;deployments&nbsp;are&nbsp;required).&nbsp;<BR>
&nbsp;&nbsp;&nbsp;Linux&nbsp;and&nbsp;Unix&nbsp;communities&nbsp;would&nbsp;become&nbsp;symbiotic.&nbsp;<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;_________________________________________________________________&nbsp;<BR>
&nbsp;<BR>
&nbsp;&nbsp;&nbsp;Acronym&nbsp;Key&nbsp;<BR>
&nbsp;<BR>
&nbsp;&nbsp;&nbsp;24x7&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;24&nbsp;hours&nbsp;a&nbsp;day,&nbsp;seven&nbsp;days&nbsp;a&nbsp;week&nbsp;<BR>
&nbsp;<BR>
&nbsp;&nbsp;&nbsp;API&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Application&nbsp;programming&nbsp;interface&nbsp;<BR>
&nbsp;<BR>
&nbsp;&nbsp;&nbsp;ASP&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Average&nbsp;selling&nbsp;price&nbsp;<BR>
&nbsp;<BR>
&nbsp;&nbsp;&nbsp;ccNUMA&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Cache-coherent&nbsp;nonuniform&nbsp;memory&nbsp;access&nbsp;<BR>
&nbsp;<BR>
&nbsp;&nbsp;&nbsp;DBMS&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Database&nbsp;management&nbsp;system&nbsp;<BR>
&nbsp;<BR>
&nbsp;&nbsp;&nbsp;ERP&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Enterprise&nbsp;resource&nbsp;planning&nbsp;<BR>
&nbsp;<BR>
&nbsp;&nbsp;&nbsp;GNU&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;GNU's&nbsp;Not&nbsp;Unix&nbsp;<BR>
&nbsp;<BR>
&nbsp;&nbsp;&nbsp;ISV&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Independent&nbsp;software&nbsp;vendor&nbsp;<BR>
&nbsp;<BR>
&nbsp;&nbsp;&nbsp;OS&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Operating&nbsp;system&nbsp;<BR>
&nbsp;<BR>
&nbsp;&nbsp;&nbsp;OSS&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Open-source&nbsp;software&nbsp;<BR>
&nbsp;<BR>
&nbsp;&nbsp;&nbsp;RISC&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Reduced&nbsp;instruction&nbsp;set&nbsp;computer&nbsp;<BR>
&nbsp;<BR>
&nbsp;&nbsp;&nbsp;SCO&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The&nbsp;Santa&nbsp;Cruz&nbsp;Operation&nbsp;<BR>
&nbsp;&nbsp;_________________________________________________________________&nbsp;<BR>
&nbsp;<BR>
&nbsp;&nbsp;&nbsp;Bottom&nbsp;Line:&nbsp;Type&nbsp;C&nbsp;(conservative)&nbsp;and&nbsp;some&nbsp;Type&nbsp;B&nbsp;(mainstream)&nbsp;users&nbsp;<BR>
&nbsp;&nbsp;&nbsp;will&nbsp;be&nbsp;less&nbsp;skeptical&nbsp;about&nbsp;Linux&nbsp;if&nbsp;vendors&nbsp;restructure&nbsp;their&nbsp;server&nbsp;<BR>
&nbsp;&nbsp;&nbsp;OS&nbsp;strategies&nbsp;to&nbsp;a&nbsp;continuum&nbsp;of&nbsp;branded&nbsp;Unix&nbsp;and&nbsp;vendor-independent&nbsp;<BR>
&nbsp;&nbsp;&nbsp;Linux,&nbsp;positioned&nbsp;as&nbsp;a&nbsp;Unixlike&nbsp;enterprise-supported&nbsp;OS.&nbsp;Type&nbsp;A&nbsp;users&nbsp;<BR>
&nbsp;&nbsp;&nbsp;(aggressive&nbsp;technology&nbsp;adopters)&nbsp;can&nbsp;retain&nbsp;more&nbsp;independence&nbsp;without&nbsp;<BR>
&nbsp;&nbsp;&nbsp;a&nbsp;vendor-led&nbsp;Linux&nbsp;strategy,&nbsp;but&nbsp;at&nbsp;the&nbsp;cost&nbsp;of&nbsp;more&nbsp;time&nbsp;and&nbsp;<BR>
&nbsp;&nbsp;&nbsp;resources&nbsp;devoted&nbsp;to&nbsp;the&nbsp;evaluation&nbsp;and&nbsp;selection&nbsp;process.&nbsp;Enterprises&nbsp;<BR>
&nbsp;&nbsp;&nbsp;should&nbsp;accept&nbsp;Linux&nbsp;as&nbsp;a&nbsp;low-to-midrange&nbsp;Unix&nbsp;substitute&nbsp;with&nbsp;a&nbsp;<BR>
&nbsp;&nbsp;&nbsp;feature/function&nbsp;set&nbsp;similar&nbsp;enough&nbsp;to&nbsp;Unix's&nbsp;to&nbsp;warrant&nbsp;its&nbsp;<BR>
&nbsp;&nbsp;&nbsp;widespread&nbsp;deployment,&nbsp;but&nbsp;only&nbsp;once&nbsp;vendors&nbsp;have&nbsp;integrated&nbsp;Linux&nbsp;<BR>
&nbsp;&nbsp;&nbsp;seamlessly&nbsp;into&nbsp;their&nbsp;hardware&nbsp;and&nbsp;OS&nbsp;strategies.&nbsp;<BR>
&nbsp;______下面这些版权所有声明什么的,&nbsp;愿意就看,&nbsp;但我必须保留.&nbsp;:)______&nbsp;<BR>
&nbsp;<BR>
&nbsp;&nbsp;&nbsp;This&nbsp;document&nbsp;has&nbsp;been&nbsp;published&nbsp;by:&nbsp;<BR>
&nbsp;&nbsp;&nbsp;Service&nbsp;Date&nbsp;Document&nbsp;#&nbsp;<BR>
&nbsp;&nbsp;&nbsp;Unix&nbsp;&amp;&nbsp;Midrange&nbsp;Strategies&nbsp;11&nbsp;January&nbsp;2000&nbsp;SPA-09-9247&nbsp;<BR>
&nbsp;&nbsp;&nbsp;PRISM&nbsp;for&nbsp;Distributed&nbsp;Computing&nbsp;11&nbsp;January&nbsp;2000&nbsp;SPA-09-9247&nbsp;<BR>
&nbsp;&nbsp;&nbsp;Information&nbsp;Technology&nbsp;Management&nbsp;-&nbsp;Distributed&nbsp;14&nbsp;January&nbsp;2000&nbsp;<BR>
&nbsp;&nbsp;&nbsp;SPA-09-9247&nbsp;<BR>
&nbsp;&nbsp;&nbsp;Information&nbsp;Technology&nbsp;Management&nbsp;Europe&nbsp;-&nbsp;Distributed&nbsp;14&nbsp;January&nbsp;2000&nbsp;<BR>
&nbsp;&nbsp;&nbsp;SPA-09-9247&nbsp;<BR>
&nbsp;&nbsp;&nbsp;Information&nbsp;Technology&nbsp;Management&nbsp;Asia/Pacific&nbsp;-&nbsp;Distributed&nbsp;14&nbsp;<BR>
&nbsp;&nbsp;&nbsp;January&nbsp;2000&nbsp;SPA-09-9247&nbsp;<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;_________________________________________________________________&nbsp;<BR>
&nbsp;<BR>
&nbsp;&nbsp;&nbsp;Entire&nbsp;contents&nbsp;(C)&nbsp;2000&nbsp;by&nbsp;Gartner&nbsp;Group,&nbsp;Inc.&nbsp;All&nbsp;rights&nbsp;reserved.&nbsp;<BR>
&nbsp;&nbsp;&nbsp;Reproduction&nbsp;of&nbsp;this&nbsp;publication&nbsp;in&nbsp;any&nbsp;form&nbsp;without&nbsp;prior&nbsp;written&nbsp;<BR>
&nbsp;&nbsp;&nbsp;permission&nbsp;is&nbsp;forbidden.&nbsp;The&nbsp;information&nbsp;contained&nbsp;herein&nbsp;has&nbsp;been&nbsp;<BR>
&nbsp;&nbsp;&nbsp;obtained&nbsp;from&nbsp;sources&nbsp;believed&nbsp;to&nbsp;be&nbsp;reliable.&nbsp;Gartner&nbsp;Group&nbsp;disclaims&nbsp;<BR>
&nbsp;&nbsp;&nbsp;all&nbsp;warranties&nbsp;as&nbsp;to&nbsp;the&nbsp;accuracy,&nbsp;completeness&nbsp;or&nbsp;adequacy&nbsp;of&nbsp;such&nbsp;<BR>
&nbsp;&nbsp;&nbsp;information.&nbsp;Gartner&nbsp;Group&nbsp;shall&nbsp;have&nbsp;no&nbsp;liability&nbsp;for&nbsp;errors,&nbsp;<BR>
&nbsp;&nbsp;&nbsp;omissions&nbsp;or&nbsp;inadequacies&nbsp;in&nbsp;the&nbsp;information&nbsp;contained&nbsp;herein&nbsp;or&nbsp;for&nbsp;<BR>
&nbsp;&nbsp;&nbsp;interpretations&nbsp;thereof.&nbsp;The&nbsp;reader&nbsp;assumes&nbsp;sole&nbsp;responsibility&nbsp;for&nbsp;<BR>
&nbsp;&nbsp;&nbsp;the&nbsp;selection&nbsp;of&nbsp;these&nbsp;materials&nbsp;to&nbsp;achieve&nbsp;its&nbsp;intended&nbsp;results.&nbsp;The&nbsp;<BR>
&nbsp;&nbsp;&nbsp;opinions&nbsp;expressed&nbsp;herein&nbsp;are&nbsp;subject&nbsp;to&nbsp;change&nbsp;without&nbsp;notice.&nbsp;Please&nbsp;<BR>
&nbsp;&nbsp;&nbsp;read&nbsp;the&nbsp;guidelines&nbsp;and&nbsp;policies&nbsp;for&nbsp;GartnerGroup&nbsp;copyrighted&nbsp;<BR>
&nbsp;&nbsp;&nbsp;materials.&nbsp;Privacy&nbsp;statement.&nbsp;<BR>
&nbsp;<BR>
=====End=========&nbsp;<BR>
--&nbsp;<BR>
|======================+========================+====================|&nbsp;<BR>
|&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>
|======================+========================+====================|&nbsp;<BR>
&nbsp;<BR>
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