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  1. or download this
    #!/usr/local/bin/perl
use strict;
use warnings;
...
$userinput1 = <STDIN>;  #first name
$userinput2 = <STDIN>;  #last name
print "Hello ${userinput1}_$userinput2";
  2. or download this
    #!/usr/local/bin/perl
use strict;
use warnings;
...
chomp($userinput1 = <STDIN>);  #first name
chomp($userinput2 = <STDIN>);  #last name
print "Hello ${userinput1}_$userinput2";