> > # Usage: exchange varname1 varname2
> > exchange() {
> > local tmp
> > [[ $1 = *[^[:alnum:]_]* || $1 = [0-9]* ]] &&
> > { echo "Naughty naughty" >&2; return 1; }
> > [[ $2 = *[^[:alnum:]_]* || $2 = [0-9]* ]] &&
> > { echo "Naughty naughty" >&2; return 1; }
> > eval tmp=\$$1
> > eval $1=\$$2
> > eval $2=\$tmp
> > return 0
> > }
> Me too, did not found anything wrong. Mind, if I'm going to include
> this in my software? Would have to be GPL v3 though. (CREDITS of course
> will go to you).
Any code I write to a public mailing list is public domain, including
this. You may do anything you want with it.
