[sf-lug] regular expressions: match 1 to 4 char word; does . match etc.
asheesh at asheesh.org
Sun Dec 14 18:12:12 PST 2008
On Sun, 14 Dec 2008, Jesse Zbikowski wrote:
> Forget about the regular expression capabilities in the standard Unix
> commands unless you are a masochist.
Or (my preference) get used to demand "E"xtended regular expressions.
$ grep -E
$ sed -r
Those two give you a perl-ish modern set of regular expressions where you
don't find yourself cursing the tool for being stuck in 1988. It's
probably not "full" perl-compatible regular expressions, but I've always
been happy with how close it is.
I firmly believe we need to stop teaching "grep and sed" and start
teaching people to use "grep -E and sed -r".
People are beginning to notice you. Try dressing before you leave the house.
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