Using varibles within awk/sed commands
 

Can I use my own variables within awk and sed for example:
I've written a while loop with a counter $i and I want to use the value of $i within sed and awk to edit certain lines of text within a data file.

I want to use :
sed '1s/$/texthere/g' birthday.csv
Like this:
sed '$is/$/$age/g' birthday.csv
but it only displays the name of the variable not the value it contains

$age is the result of a calculation created within the while loop that I would like to append to the end of each line.

Any help is greatly appreciated :)

Re: Using varibles within awk/sed commands
 

You have to read up on the (sometimes strange) rules about quoting and variable substitution in various shells.

Try say

sed $i's/$/'$age'/g' birthday.csv

Or maybe

sed "${i}s/$/${age}/g" birthday.csv

Re: Using varibles within awk/sed commands
 

sed "${i}s/$/${age}/g" birthday.csv

Worked great thanks very much :)