You have: 
@Default_Tools_List = (
   [ 'gzip'        ,'app', '' , 'generic_check' ],
   [ 'gunzip'      ,'app', '' , 'generic_check' ],
   [ 'tar',        ,'app', '' , 'generic_check' ],
   [ 'tr',         ,'app', '' , 'generic_check' ],
   [ 'date'        ,'app', '' , 'generic_check' ],
   [ 'ps',         ,'app', '' , 'generic_check' ],
   [ 'cat',        ,'app', '' , 'generic_check' ],
   [ 'id',         ,'app', '' , 'generic_check' ],
   [ 'echo'        ,'app', '' , 'generic_check' ],
   [ 'pwd',        ,'app', '' , 'generic_check' ],
   [ 'chmod'       ,'app', '' , 'generic_check' ],
   [ 'ln',         ,'app', '' , 'generic_check' ],
   [ 'cp',         ,'app', '' , 'generic_check' ],
   [ 'rpm',        ,'app', '' , 'generic_check' ],
   [ 'clear'       ,'app', '' , 'generic_check' ],
   [ 'dirname'     ,'app', '' , 'generic_check' ],
   [ 'df'          ,'app', '' , 'generic_check' ],
   [ 'Carp'        ,'perlm', 'Perl Module - Carp', 'perl_module_check'
+ ],
) ;

[download]
I'd never write that in a program. I'm too lazy. Plus, there's too many ways this could go wrong when a maintainer comes long. I'd write this as: 
@Default_Tools_List = (
   (map [$_, 'app', '', 'generic_check'], qw(
      gzip gunzup tar tr date ps cat id echo pwd chmod ln cp rpm clear
+ dirname df
   )),
   [ 'Carp'        ,'perlm', 'Perl Module - Carp', 'perl_module_check'
+ ],
) ;

[download]
If you're "cutting and pasting" with an editor while writing a program, you're almost always going to give the maintainer a headache. Please don't.

-- Randal L. Schwartz, Perl hacker

In reply to Data helper (was Re: ensure - Ensure that the environment is good.) by merlyn
in thread ensure - Ensure that the environment is good. by muralikrishnan

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