UNIX for Dummies Questions & Answers

I am getting the varible value from a grep command as:
var=$(grep "Group" File1.txt | sed 's/Group Name[ ]*//g;s/,//g;s/://g;s/-//g')

which leaves me the value of $var=xyz.
now i want to append $var value in the begining of all the lines present in the file. Can u please suggest?
Input file:
1
2
3
4
5
Output File:
xyz1
xyz2
xyz3
xyz4
xyz5

Code:

awk -v V="$var" '{$0=V $0}1' file.txt

Code:

sed "s/^/$var/g" file.txt

doesnt works.. isnt appending anything to the file

---------- Post updated at 12:14 PM ---------- Previous update was at 12:13 PM ----------


nothing got appended

Both versions work exactly as expected. Is your var set? Is your input file a unix file or does it contain weird control chars?

yes.. i have checked several times. echo $var gives me xyz as output.
As i mentioned I am populating $var through a grep command
var=$(grep "Group" F5 | sed 's/Group Name[ ]*//g;s/,//g;s/://g;s/-//g')

when i use the variable as a static variable by hardcoding var="xyz", every command works absolutely fine. but when i populate the variable dynamically using grep command it fails..

file has no control characters.. simple txt file converted from a excel file

If the commands work when used with var=xyz, then I'd bet your "dynamic assignment" kills the code. Sure the file being grepped has NO <CR> characters?