Synopsis:

display Perl-expression

Print value of expression Perl-expression each time the program stops.

Examples:

            

              
              
display $a  # Display variable \$a each time we enter debugger
display join(', ', @ARGV)  # show values of array @ARGV
            
          

If what you want to do is evaluate a Perl expression or statement once rather than every time the program stops, see eval.

See also undisplay, enable, and disable