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Re: Cygwin bash regexp matching doesn't treat "\b" properly
On Wed, Nov 25, 2009 at 10:33:53AM -0500, Buchbinder, Barry (NIH/NIAID) [E] wrote:
>aputerguy sent the following at Tuesday, November 24, 2009 5:10 PM
>>Seriously, there are times to use Perl and times not to... But
>>launching perl seems a bit of overkill when I just have to do a simple
>>match in a .bashrc script or when I need a small shell script wrapper.
>Looking at the man page for everything in /bin that matches the pattern
>*.exe find the following that may be of interest. Testing to see if
>these actually work is left as an exercise for the OP. :-)
>pcregrep - a grep with Perl-compatible regular expressions.
>grep, egrep, fgrep - print lines matching a pattern -w, --word-regexp
>Select only those lines containing matches that form whole words. The
>test is that the matching substring must either be at the beginning of
>the line, or preceded by a non-word constituent character. Similarly,
>it must be either at the end of the line or followed by a non-word
>constituent character. Word-constituent characters are letters,
>digits, and the underscore.
If you're interested in a grep which uses perl regexes then:
% grep --help
Usage: grep [OPTION]... PATTERN [FILE]...
Search for PATTERN in each FILE or standard input.
PATTERN is, by default, a basic regular expression (BRE).
Example: grep -i 'hello world' menu.h main.c
Regexp selection and interpretation:
-P, --perl-regexp PATTERN is a Perl regular expression
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