(R)?ex the friendly automation framework



Rex-1.14.3 is now available on CPAN. It contains bug fixes for local package installation, command existence checks, and Git tests.


The Rex-1.14.2 release is now available on CPAN. It contains bug fixes for running local commands on Windows, cloning git repositories, and test suite fixes for the upcoming perl-5.38.0 release.

Call for papers TPRC 2023

Dean Hamstead from the The Perl and Raku Foundation Marketing Committee has sent an invitation to present about Rex at TPRC 2023. I’m posting it here to increase visibility.


The Rex-1.14.1 release is now available on CPAN. It contains bug fixes and documentation updates.


The Rex-1.14.0 release is now available on CPAN. It contains improved Rexfile loading, documentation updates, and bumps the minimum required Perl version to 5.12.5.


Learning automation using Rex

Ferenc Erki (FErki) will be the guest of Gábor Szabó on the next Code Maven live stream to learn about automation using Rex. Register for the free event via Code Maven or Meetup, and join the discussion!

Unexpected use cases with Rex

Unexpected use cases with Rex at the 22nd German Perl/Raku Workshop 2020 in Erlangen by Ferenc Erki (FErki).

Rex & Friends

Rex & Friends talk at the Barcelona Perl & Friends 2019 by Ferenc Erki (FErki).

» Home » Docs » Release notes » Release notes for 0.45

Release notes for 0.45

These are the changes in 0.45 release.

We want to thank all the people for contributing code and to fill bug reports. This helps making Rex better and better :)


Changes in the Cloud API

my $instance = cloud_instance create => { image_id => "ccd8bcab-8ad2-4744-8227-08279fab7a42", name => "ostack01", plan_id => 2, volume => $vol_id, };
-   Terminating an instance and removing the volume.

    <pre><code class="hljs">cloud_instance terminate =&gt; <span class="hljs-type">$instance</span>-&gt;{id};

cloud_volume delete => $vol_id;


Changes in the core. These include new resources and new options for existing one.

# somewhere else in the code notify run => "kill-process-httpd";
-   *creates* option for run() resource.

    This tell Rex that this command creates a special file. If this file is found, the command won't get executed anymore.

    <pre><code class="hljs">run "<span class="hljs-string">download-ipxe</span>",

command => "wget -O /var/lib/tftpboot/undionly.ipxe http://boot.ipxe.org/undionly.kpxe", creates => "/var/lib/tftpboot/undionly.ipxe";

-   *only\_if* and *unless* option for run() resource.

    This will execute the command only if the command given will execute successfully (or terminate unsuccessfull).

    <pre><code class="hljs">run "<span class="hljs-string">add-service-os</span>",

command => "mysql -uroot < /tmp/data.sql", unless => "mysql -uroot dbschema -e 'SELECT id FROM os_template WHERE id=2' | grep -q 2";

-   support for customized environments. - \#316 - andrejzverev

    It is now possible to add custom environment variables to the run() resource.

    <pre><code class="hljs">run "<span class="hljs-string">my_command</span>",

env => { env_var_1 => "the value for 1", env_var_2 => "the value for 2", };

# somewhere else in the code file "/etc/httpd/httpd.conf", content => template( "templates/httpd.conf.tpl", %vars ), on_change => sub { notify service => "httpd"; };


Known bugs that has been fixed.

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