I am using linux and trying to code a loop which can take in variables and concatenates them into an equation. But how do I remove it for the last loop.
printf "(%s + %s) x ", $1, $2
I want to print (1 + 1) x (2 + 2) x (3 + 3), but instead I get (1 + 1) x (2 + 2) x (3 + 3) x
What should I do to exclude this last "x"?
>Solution :
This is probably what you’re trying to do:
$ awk '{printf "%s(%s + %s)", sep, $1, $2; sep=" x "} END{print ""}' file
(1 + 1) x (2 + 2) x (3 + 3)
That was run against an input file created by:
$ printf '%d %d\n' 1 1 2 2 3 3
1 1
2 2
3 3
$ printf '%d %d\n' 1 1 2 2 3 3 > file