wrap external command with a DWIM sub

 System::Sub provides a Perl sub
 that wraps the call to an external program.
 The return value is line(s) dependending on context ("wantarray").
 .
 This may be what you need if you want to run external commands
 as easily as from a Unix shell script
 but with a perl-ish feel (contextual output).
 So this is not a universal module
 for running external programs (like IPC::Run)
 but instead a simpler interface
 for a common style of external programs.