So hello be ready cause what i'm about to ask is fucked xD, i made a custom terminal shell with custom commands but i made some modules I want the user to do "use <modukle>" and then execute the module, i know how to do so from the command-line but what i mean by custom terminal shell is a function with an user input which repeats itself when the user has input a correct command it acts like a custom shell. so its like <Banner of the script> Input "help" or "?" to conitnue... (USERNAME): <input> You know custom terminal shell and i wanna to know in perl how to make so the user needs to put use <module> then execute the module, is there anyway?

SOLUTION EDITED: 

sub ShellInput{
   my $host = hostname;
   print "($host): ";
   chop(my $shell=<stdin>);  
  # Checks if use was used then read the argument:
  if($shell =~ /use/){
     if ($shell =~ /use \s*(.+)$/) {
       my $module = $1;
       print "Module: $module \n";
       ShellInput();
     }
  }
}

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