Example - WHM/cPanel Update Hooks

dev_cli_cpanel_update_hooks.txt

# https://documentation.cpanel.net/display/SDK/Guide+to+Standardized+Hooks+-+The+manage_hooks+Utility
# To add a script to upcp schema (as a hook)
/usr/local/cpanel/bin/manage_hooks add script /root/src/cpanel-hooks/postupcp.sh --manual --category System --event upcp --stage post

# To remove a script as hook from upcp schema
/usr/local/cpanel/bin/manage_hooks delete script /root/src/cpanel-hooks/postupcp.sh --manual --category System --event upcp --stage post

# To list current hooks (
/usr/local/cpanel/bin/manage_hooks list

# Perl modules can be used too
/var/cpanel/perl/scripts/someApp/someScript.pm

# Can be used in manage_hooks binary as method syntax
/usr/local/cpanel/bin/manage_hooks <action> module someApp::someScript <flags>

# Or php scripts
/var/cpanel/someApp/someScript.php

# Can be used in manage_hooks binary as script syntax
/usr/local/cpanel/bin/manage_hooks <action> script /var/cpanel/someApp/someScript.php <flags>

# https://documentation.cpanel.net/display/SDK/Guide+to+Standardized+Hooks+-+The+describe%28%29+Method
# <flags> can be included in the script or module using the describe() method
function describe() {
    $init_add = $init_remove = array(
        'category' => 'System',
        'event'    => 'upcp',
        'stage'    => 'post',
        'hook'     => '/var/cpanel/someApp/someScript.php',
        'exectype' => 'script',
    );
    return array($init_add, $init_remove);
}