或查找的正則表達式中的條件

Question

爲什麼當文件存在時它什麼也不查找？

find ./ -regex '.*(jar|war)'

Answer 1

見人發現信息有關的正則表達式支持的語法：

-regextype type 
     Changes the regular expression syntax understood by -regex and 
     -iregex tests which occur later on the command line. Currently- 
     implemented types are emacs (this is the default), posix-awk, 
     posix-basic, posix-egrep and posix-extended. 

這工作：

$ find . -regextype egrep -regex '(.*jar)|(.*war)' 

爲了避免使用-regextype變化表達到emacs正則表達式：

$ find . -regex '.*\(jar\|war\)'