bash lacks perl's "x" repetition operator

[Dan Jacobson]

>> Perhaps add this to the cwgen man page as an interesting exercise:
>> $ cwgen -c '             VU'|cw -w 25

Joop> Nice! Seems like a good exercise, will add it to the manpage.

Also: emulate real radio stations:
$ c=hlf; yes cq cq cq de $c $c $c qsx 12mhz k '            '|cw -w 20

Alas, both the above could be made less goofy looking if bash only had
perl's "x" repetition operator.