$command="bsub $parameters" # 3rd party program
...
$output=qx($command 2>&1); # Works also under Win

##</code><code>##

bsub -k

##</code><code>##

bsub: option requires an argument -- k
Usage: bsub ....

##</code><code>##

$parameters='-k'
...
$command="bsub $parameters" # 3rd party program
...
$output=qx($command 2>&1); # Works also under Win