Question

I have searched stack and I am getting stuck with a particular CSV file:

I have a large CSV file formatted in two columns:

Name    Extension
Brian Aducci    6598
Jeff Alexander  6661
Sara Alfieri    6789

I want to leave the extension and trim the names into the usernames:

Name    Extension
BAducci 6598
JAlexander 6661
SAlfieri 6789

Answer 1

this short line should give you what you want:

awk 'NR>1{$0=substr($1,0,1)$2" "$3}1' file

test

kent$  echo "Name    Extension
Brian Aducci    6598
Jeff Alexander  6661
Sara Alfieri    6789"|awk 'NR>1{$0=substr($1,0,1)$2" "$3}1'
Name    Extension
BAducci 6598
JAlexander 6661
SAlfieri 6789