Removing leading zeros before passing a shell variable to another command

Question

It turns out that iptables doesn\'t handle leading zeros too well. As $machinenumber that is used has to have a leading zero in it for other purposes, the idea

Answer 1

A pure bash solution:

> N=0001023450 
> [[ $N =~ "0*(.*)" ]] && N=${BASH_REMATCH[1]}
> echo $N 
1023450