awk reg-exp question
Chris Devers
cdevers at pobox.com
Wed Jan 28 15:27:35 EST 2004
On Wed, 28 Jan 2004, Duane Morin wrote:
> On Wed, 2004-01-28 at 15:04, Joshua Pollak wrote:
> > #PARAM=wrong_value
> > PARAM=value_new # value_old
> >
>
> So basically you want a rule that says "Start with a line, hack off
> anything after the #, then do your rule." Try this:
>
> cat file | sed -e s/#\.\*// | <awk script>
Useless Use Of cat.
How about this instead?
sed -e s/#\.\*// file | awk ...
But I don't understand your pattern: it matches a pound sign, followed by
a literal '.' character, then a literal asterisk. Why? If you drop the
backslashes, it matches a pound sign followed by zero or more of anything,
which I think is closer to your intent.
> Modify that sed line depending on how you prefer to call it, what shell,
> and so forth. I can never remember what chars I am obligated to escape.
Ahh :)
--
Chris Devers
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