App-Unliner

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README  view on Meta::CPAN

    be invoked with this command:

        $ unliner log-report < input.txt

    You could also put a shebang line
    <https://en.wikipedia.org/wiki/Shebang_(Unix)> at the top of your
    script:

        #!/usr/bin/env unliner

    Now if you "chmod +x log-report" you can run it directly:

        $ ./log-report < input.txt

  Defs
    The "def main { }" isn't a special type of def except that it happens to
    be what is called when your program is invoked. You can create other
    defs and they can be invoked by your main def and other defs, kind of
    like subroutines.

    For example, we could move the "awk" command into a "ip-extractor" def,

bin/unliner  view on Meta::CPAN

You can run your scripts by passing them in as the first argument to C<unliner>:

    unliner /path/to/myscript.unliner [args to unliner script]

Alternatively, you can put the following line at the top of your unliner script:

    #!/usr/bin/env unliner

make your script executable:

    chmod a+x /path/to/myscript.unliner

and then run it directly:

    /path/to/myscript.unliner [args]

Lastly, you pipe an unliner script to C<unliner> on standard input:

    unliner < /path/to/myscript.unliner

although now your unliner script won't have standard input available to it which your script may require.

lib/App/Unliner.pm  view on Meta::CPAN

        ## HTTP response code is 2nd last field
        print "$1\n" if /(\d\d\d) \S+$/;
    }

    def tally {
        sort | uniq -c | sort -rn
    }

Now make C<reportgen> executable:

    $ chmod a+x reportgen

Now you can run C<reportgen> like a normal program:

    $ ./reportgen /var/www/log/access.log
      43628 200
       1911 301
        201 404
          6 500

lib/App/Unliner/Intro.pm  view on Meta::CPAN

    }

If you save this in the file C<log-report> then your unliner program can be invoked with this command:

    $ unliner log-report < input.txt

You could also put a L<shebang line|https://en.wikipedia.org/wiki/Shebang_(Unix)> at the top of your script:

    #!/usr/bin/env unliner

Now if you C<chmod +x log-report> you can run it directly:

    $ ./log-report < input.txt



=head2 Defs

The C<def main { }> isn't a special type of def except that it happens to be what is called when your program is invoked. You can create other defs and they can be invoked by your main def and other defs, kind of like subroutines.

For example, we could move the C<awk> command into a C<ip-extractor> def, and the tallying logic into a C<tally> def: