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Top Forums UNIX for Dummies Questions & Answers Effects of grep -o when it's not available Post 302268977 by earnstaf on Tuesday 16th of December 2008 03:48:30 PM
Old 12-16-2008
Quote:
Originally Posted by joeyg
Code:
> testval="this is"
> echo "wow this is a test" | sed "s/$testval/~&~/" | tr "~" "\n" | grep "$testval"
this is

Is that what you are looking for?
That is clever, but I don't know if it works for my situation, which is this:

I have a record that looks like:
Code:
acl add name=ACL_RULE_NAME pos=400 action=allow agent=proxy authneeded=no \
dest=netgroup:destinations_ssh destburb=external nataddr= \
service=ssh source=ipaddr:1.2.3.4 sourceburb=internal \
comments='this is comments' \
lastchangedby='changed by the guy'

I want to break that down and pull out just the stuff I care about, namely name, dest, destburb, source, sourceburb and service.

I had planned on doing something like:
Code:
while read line 
do
source=`grep -o "source=.* "`
dest=`grep -o "dest=.* "`
echo "$source $dest"
done

I'm sure there is a more elegant or effective way... actually now that I'm looking at it that wont work since they records are on different lines... might have to use awk. However, I cant even get the idea in motion without grep -o.
 

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