Packy Anderson

• Website: packy.dardan.com/
• About: I *want* to blog about Perl.

Recent Actions

• Commented on The first line of Perl_CGI script, env perl vs perl only, how different?
  Also, the -w you see in the #!/usr/bin/perl -w is just passing the "enable warnings" flag to Perl. If you're using /usr/bin/env, you can do the same thing by putting #!/usr/bin/env -S perl -w However, I dislike using command line...
• Commented on The first line of Perl_CGI script, env perl vs perl only, how different?
  The difference doesn't have anything to do with Perl; it's how unix-like operating systems interpret files that start with a shebang (#!). The first part after the shebang is the pathname to the executable that will be called with the...
• Posted Introducing JIRA::REST::Class to Packy Anderson

  Over the past couple months, I've had to take over project management for my DarkPAN project at $EMPLOYER, and the software they're enamored of for that purpose is

Comment Threads

• Aristotle commented on The first line of Perl_CGI script, env perl vs perl only, how different?

  Avoiding doing things on the shebang line is a matter of coding style and therefore subjective.

  There is a much more important reason to avoid -w, which is objective: it’s not at all the same thing as use warnings. Whereas use warnings applies to the rest of the current scope, -w is completely global. Under -w, any module loaded directly or indirectly will have warnings forced on it, even if the module itself does not turn on warnings – which nowadays almost certainly means it was written to run without warnings. Theref…

• Kido Mitsuru commented on The first line of Perl_CGI script, env perl vs perl only, how different?

  Thanks, thanks Packy Anderson.

  I am not perfect to understand what you say, but at least I am getting into it. It appears to me that the script starting with

  #!/usr/bin/env perl
  use strict;
  use warnings;

  is popular nowadays. So, I will follow this way to see what will happen. I will also study your links too. Thanks, thanks so much.

• Kido Mitsuru commented on The first line of Perl_CGI script, env perl vs perl only, how different?

  Hello! Aristotle, thanks for your comment. I will follow your opinion. Let me see. Thanks, thanks.

• raf commented on The first line of Perl_CGI script, env perl vs perl only, how different?

  I've also seen this:

  #!perl

  And it seems to work like "#!/usr/bin/env perl" on Linux (i.e. $PATH is consulted), but it fails completely on macOS. Best avoided.