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📁 一份很好的linux入门资料

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<HTML><HEAD>  <TITLE>BBS水木清华站∶精华区</TITLE></HEAD><BODY><CENTER><H1>BBS水木清华站∶精华区</H1></CENTER>发信人:&nbsp;starw&nbsp;(虫二·抛愚引砖),&nbsp;信区:&nbsp;Linux&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<BR>标&nbsp;&nbsp;题:&nbsp;Re:&nbsp;怎么在shell中read文件中行首有空格的行&nbsp;<BR>发信站:&nbsp;BBS&nbsp;水木清华站&nbsp;(Fri&nbsp;Oct&nbsp;20&nbsp;20:36:53&nbsp;2000)&nbsp;<BR>&nbsp;<BR>read是以$IFS指定的字符做分隔的...也就是空格甚么的&nbsp;<BR>&nbsp;<BR>&nbsp;<BR>cat&nbsp;myfile&nbsp;|&nbsp;(export&nbsp;IFS='\n';&nbsp;while&nbsp;read&nbsp;LINE;&nbsp;do&nbsp;{};done)&nbsp;<BR>&nbsp;<BR>这样即可&nbsp;<BR>问题是你要做甚么处理?&nbsp;或许sed,&nbsp;awk更容易,&nbsp;要不然也可以用perl....&nbsp;<BR>&nbsp;<BR>&nbsp;<BR>【&nbsp;在&nbsp;tco99&nbsp;(PIII600)&nbsp;的大作中提到:&nbsp;】&nbsp;<BR>∶<I>&nbsp;&nbsp;&nbsp;写了一个简单的shell&nbsp;script,想逐行地处理指定的文件,&nbsp;</I><BR>∶<I>&nbsp;根据处理情况增加若干新行.&nbsp;</I><BR>∶<I>&nbsp;while&nbsp;read&nbsp;LINE&nbsp;</I><BR>∶<I>&nbsp;do&nbsp;</I><BR>∶<I>&nbsp;{my&nbsp;processing&nbsp;for&nbsp;$LINE}&nbsp;</I><BR>∶<I>&nbsp;done&nbsp;&lt;&nbsp;myfile&nbsp;</I><BR>∶<I>&nbsp;结果发现read&nbsp;命令把对应行最前边的空格都过滤掉了,&nbsp;</I><BR>∶<I>&nbsp;处理后的文本格式不对了.&nbsp;</I><BR>∶<I>&nbsp;有什么办法,既可逐行处理文件,又能保留行首的空格?&nbsp;</I><BR>∶<I>&nbsp;用sed或awk可不可以做到?&nbsp;</I><BR>&nbsp;<BR>&nbsp;<BR>--&nbsp;<BR>&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;寒山惟白云，寂寂绝埃尘。草座山家有，孤灯明月轮。&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;石床临碧沼，鹿虎每为邻。自羡幽居乐，长为世外人。&nbsp;<BR>&nbsp;<BR>&nbsp;<BR>※&nbsp;来源:·BBS&nbsp;水木清华站&nbsp;smth.org·[FROM:&nbsp;202.117.1.24]&nbsp;<BR><CENTER><H1>BBS水木清华站∶精华区</H1></CENTER></BODY></HTML>

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