BlogJava-Dedian-随笔分类-Linuxhttp://www.blogjava.net/dedian/category/16533.html-- 关注搜索引擎的开发zh-cnTue, 27 Feb 2007 10:16:06 GMTTue, 27 Feb 2007 10:16:06 GMT60what comparison function is in linux sorting ?http://www.blogjava.net/dedian/archive/2007/02/02/97399.htmlDedianDedianThu, 01 Feb 2007 23:10:00 GMThttp://www.blogjava.net/dedian/archive/2007/02/02/97399.htmlhttp://www.blogjava.net/dedian/comments/97399.htmlhttp://www.blogjava.net/dedian/archive/2007/02/02/97399.html#Feedback0http://www.blogjava.net/dedian/comments/commentRss/97399.htmlhttp://www.blogjava.net/dedian/services/trackbacks/97399.html
...
abca.com
abc-d.com
abce.com
...

I am curious what comparison function it applys in its' sorting function. I supposed it should be a string comparison, like strcmp function, but it is not. coz strcmp will compare ascii code of characters in string one by one, thus above sorting should like this:

abc-d.com
abca.com
abce.com

one guess is that when sorting names the special characters like "." "-" will be skipped. but still got some problem when sorting following names:

abc---d.com
abc--d.com
abc-d.com

why can linux sorting keep this order? if it skips some special characters, above names should be compared equally and maybe sorted as a random order.

confused, anybody has thought about that?

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p.s.

Haven't got updated here for quite a long time, coz I am back to program with c under linux and I believe it is a place for Java programmers.

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update:

Linux sorting compares unicode of strings … more about unicode is here






Dedian 2007-02-02 07:10 发表评论
]]>How to search a file in Linuxhttp://www.blogjava.net/dedian/archive/2006/04/19/41789.htmlDedianDedianTue, 18 Apr 2006 18:04:00 GMThttp://www.blogjava.net/dedian/archive/2006/04/19/41789.htmlhttp://www.blogjava.net/dedian/comments/41789.htmlhttp://www.blogjava.net/dedian/archive/2006/04/19/41789.html#Feedback0http://www.blogjava.net/dedian/comments/commentRss/41789.htmlhttp://www.blogjava.net/dedian/services/trackbacks/41789.htmlWell, I just want to know how to do file searching in Linux as something like dir <file_name> /s in DOS...
 
by google, i found two methods:
 
ls -R | grep file_name
 
or
 
find . -name file_name
 
^-^


Dedian 2006-04-19 02:04 发表评论
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