Question

#!/usr/bin/perl
use warnings;
system ("dialog --menu Customize 10 70 50 'Flush rules' 'Clear all the rules' 'Show rules' 'Shows the current rules' 2> /tmp/tmp.txt ")

I want to write the above code in a more readable form like this

#!/usr/bin/perl
use warnings;
system ("dialog --menu Customize 10 70 50 
'Flush rules' 'Clear all the rules' 
'Show rules' 'Shows the current rules' 
'more options' '........' 2> /tmp/tmp.txt ")

How can I do this?

Answer 1

Perl provides a string concatentation operator that you can use to build up big strings:

system ( "dialog --menu Customize 10 70 50 "
       . "'Flush rules' 'Clear all the rules' "
       . "'Show rules' 'Shows the current rules' "
       . "'more options' '........' 2> /tmp/tmp.txt ");