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查找总共10个字符 & z结尾的行。
[root@sky ~]# grep "^.\{9\}z$" /usr/share/dict/words Abdul-Aziz Austerlitz chattererz chervonetz Rabinowitz razzmatazz roquellorz Rosenkranz tau-saghyz [root@sky ~]#
查找a/b/c开头 & 21位是s的行
[root@sky ~]# grep "^[a,b,c]...................s" /usr/share/dict/words all-comprehensiveness antienvironmentalists antiinstitutionalists bras-dessus-bras-dessous brigantinebrigantines chlamydobacteriaceous clothes-consciousness counterdemonstrations counterproductiveness [root@sky ~]#
查找两位数字开头的行：
[root@sky ~]# grep "^[0-9][0-9]" /usr/share/dict/words 1080 10-point 10th 11-point 12-point 16-point 18-point 20-point 30-30 48-point [root@sky ~]#
查找a/b/c开头，不是a/b/c结尾的行：
[root@sky ~]# grep "^[a,b,c][^a,b,c]$" /usr/share/dict/words a‘ a- a. a1 ad
查找a/b/c开头，大写字母结尾的行：
[root@sky ~]# grep "^[a-c].*[A-Z]$" /usr/share/dict/words chloramine-T cS [root@sky ~]#
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原文地址：http://www.cnblogs.com/skyfly0772/p/5013575.html
