Let us know on what you want to achieve using that bash script, because perl is inspired by C, SED and shell(unix shells). Perl itself can help you without using bash script.
but if you are writing a wrapper in perl to call lot of bash scripts then your idea is okay.
give us some more details about the aim of your perl program and bash script to help you.
Vivek
-- In accordance with the prarabdha of each, the One whose function it is to ordain makes each to act. What will not happen will never happen, whatever effort one may put forth. And what will happen will not fail to happen, however much one may seek to prevent it. This is certain. The part of wisdom therefore is to stay quiet.