2 FAQ tagged "regular expression"

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Search Multiple Words / String Pattern Using grep Command :
How do I search multiple string using grep command? For example I’d like to search word1, word2, word3 and so on within /path/to/file. How do I force grep to search multiple words?
Lighttpd as you compiled without pcre support error and solution :
Q. I’m using lighttpd under CentOS 5 and getting the following error:
…can’t handle ‘$HTTP[url] =~ …’ as you compiled without pcre support.
My question is What is pcre support, and how do I solve this problem?
A. Pcre is nothing but Perl-compatible regular expression library. PCRE has its own native API, but a set of “wrapper” functions [...]

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