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Full Discussion: Passing variables to sed
Top Forums Shell Programming and Scripting Passing variables to sed Post 65538 by jfisch on Monday 7th of March 2005 05:29:34 AM
Old 03-07-2005
Passing variables to sed
Hi folks,

I'm looking for a solution to pass variables to a sed-command. I'm reading a lot of threats and also the q&a "How can I use a variable in sed?". None of these commands works. I'm using AIX 5.2.

I want to do the following:

NUMBER=` echo 38341` | sed -n '/$NUMBER/p'

an obtained this:

+ + sed -n /$NUMBER/p
+ echo 38341
NUMBER=38341


If I try this command

NUMBER=` echo 38341` | sed -n "/$NUMBER/p"

I obtained this:

+ sed -n //p
+ sed: 0602-410 The first regular expression cannot be null.
+ echo 38341
NUMBER=38341

The problem I have is, I need the NUMBER as a line number to access these line in a second file.

Has anybody an idea about this?

THX
 

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