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Shell Programming and Scripting

How to grep from the third column?

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Top Forums Shell Programming and Scripting How to grep from the third column?
# 8  
Old 08-11-2015
Quote:
Originally Posted by ajetangay
If i use this awk method, what would I do when the number next to VAS is diffrent, like if I want it to do that to a bunch of lines
Shell globbing: use * to match any characters rather than a specific string:
Code:
var=`vastool list group tests_li004_developers`
echo "${var#*:VAS:*:}"
echo "${var#*:*:*:}"

Regular expression: use .* to match any characters, and [^:]* to match any but a : character:
Code:
vastool list groups | sed "s/^[^:]*:VAS:[^:]*://"
vastool list groups | sed -n "/^tests_li004_developers:/ s/^[^:]*:VAS:[^:]*://p"
vastool list groups | sed -n "s/^tests_li004_developers:VAS:[^:]*://p"

awk can use regular expressions, too, but divides into fields $1 $2 ... that is often easier to deal with:
Code:
vastool list groups | awk -F":" '($1=="tests_li004_developers") {print $4}'

NB some awk versions have restrictions regarding line length.
Last edited by MadeInGermany; 08-11-2015 at 03:27 PM.. Reason: added vastool examples after reading your other post
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