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Old 11-07-2005, 06:38 PM   #1
Registered: Dec 2003
Distribution: Debian, FreeBSD
Posts: 310

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Bash, using variable in sed

This is the command I'm trying to use..

sed -n '1p' filename

What I am trying to do is have "1" be a variable that will have a counter on it that gets incremented in a while loop.. The part I'm trying to figure out is how to use a variable inside of sed.

I tried this, and a few variations, but its not working..


sed -n '/$VARIABLE/p' filename

Old 11-07-2005, 07:44 PM   #2
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Registered: Feb 2003
Location: Blue Ridge Mountain
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my guess


sed -n "${VARIABLE}p" filename

Steve Stites
Old 11-07-2005, 07:52 PM   #3
Registered: Dec 2003
Distribution: Debian, FreeBSD
Posts: 310

Original Poster
Rep: Reputation: 35
That was easy enough

Old 11-12-2005, 07:41 AM   #4
Registered: May 2005
Posts: 378

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Invest some time learning the difference between single and double quotes in shells. It'll repay you in spades. For starters:
VAR="aa            bb                  cc"
echo $VAR
echo "$VAR"
echo '$VAR'


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