Like pERL CALLING lINUX COMMANDS SEQUENTIALLY your title messed up, are you having problems with you caps and shift keys? Here (like previous posts) you're not actually asking a question. If all you want to do is call linux commands why involve Perl at all, since you seeming don't want to use any of it's features? Again, please read and understand How do I post a question effectively?. Since you don't seem to know basic perl I suggest spending time learning from the following:

• perlintro
• http://learn.perl.org
• http://perldoc.perl.org
• The tutorials section of this site