diff --git a/htdocs/install/inc.php b/htdocs/install/inc.php
index 9dc12b18277..636f365683f 100644
--- a/htdocs/install/inc.php
+++ b/htdocs/install/inc.php
@@ -6,6 +6,7 @@
  * Copyright (C) 2012       Marcos García           <marcosgdf@gmail.com>
  * Copyright (C) 2016       Raphaël Doursenaud      <rdoursenaud@gpcsolutions.fr>
  * Copyright (C) 2021       Charlene Benke      	<charlene@patas-monkey.com>
+ * Copyright (C) 2023       Alexandre Janniaux      <alexandre.janniaux@gmail.com>
 *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -70,6 +71,92 @@ $conffiletoshow = "htdocs/conf/conf.php";
 //$conffile = "/etc/dolibarr/conf.php";
 //$conffiletoshow = "/etc/dolibarr/conf.php";
 
+$short_options = "c:h";
+$long_options = array(
+	"config:",
+	"help",
+);
+
+/**
+ * Print the usage when executing scripts from install/.
+ *
+ * Print the help text exposing the available options when executing
+ * update or install script (ie. from htdocs/install/) from CLI with
+ * the `php` executable. This function does not `exit` the program and
+ * the caller should then call `exit` themselves since they should
+ * determine whether it was an error or not.
+ *
+ * @param string $program the script that was originally run
+ * @param string $header  the message to signal to the user
+ * @return void
+ */
+function usage($program, $header)
+{
+	echo $header."\n";
+	echo "  php ".$program." [options] previous_version new_version [script options]\n";
+	echo "\n";
+	echo "Script options when using upgrade.php:\n";
+	echo "\n";
+	echo "  dirmodule:\n";
+	echo "      Specify dirmodule to provide a path for an external module\n";
+	echo "      so the migration is done using a script from a module.\n";
+	echo "\n";
+	echo "  ignoredbversion:\n";
+	echo "      Allow to run migration even if database version does\n";
+	echo "      not match start version of migration.\n";
+	echo "\n";
+	echo "Script options when using upgrade2.php:\n";
+	echo "\n";
+	echo "  MODULE_NAME1_TO_ENABLE,MODULE_NAME2_TO_ENABLE:\n";
+	echo "      Specify a list of module-name to enable, joined by comma.\n";
+	echo "\n";
+	echo "Options:\n";
+	echo "  -c, --config <filename>:\n";
+	echo "      Provide a different conf.php file to use.\n";
+	echo "\n";
+	echo "  -h, --help:\n";
+	echo "      Display this help message.\n";
+}
+
+if (php_sapi_name() === "cli") {
+	$rest_index = 0;
+	$opts = getopt($short_options, $long_options, $rest_index);
+
+	foreach ($opts as $opt => $arg) switch ($opt) {
+		case 'c':
+		case 'config':
+			$conffile = $arg;
+			$conffiletoshow = $arg;
+			break;
+		case 'h':
+		case 'help':
+			usage($argv[0], "Usage:");
+			exit(0);
+	}
+
+	// In the following test, only dash-prefixed arguments will trigger an
+	// error, given that scripts options can allow a variable number of
+	// additional non-prefixed argument and we mostly want to check for
+	// typo right now.
+	if ($rest_index < $argc && $argv[$rest_index][0] == "-") {
+		usage($argv[0], "Unknown option ".$argv[$rest_index]. ", usage:");
+		exit(1);
+	}
+
+	// Currently, scripts using inc.php will require addtional arguments,
+	// see help above for more details.
+	if ($rest_index > $argc - 2) {
+		usage($argv[0], "Missing mandatory arguments, usage:");
+		exit(1);
+	}
+
+	// Tricky argument list hack, should be removed someday.
+	// Reset argv to remove the argument that were parsed. This is needed
+	// currently because some install code, like in upgrade.php, are using
+	// $argv[] directly with fixed index to fetch some arguments.
+	$argv = array_merge(array($argv[0]), array_slice($argv, $rest_index));
+	$argc = count($argv);
+}
 
 // Load conf file if it is already defined
 if (!defined('DONOTLOADCONF') && file_exists($conffile) && filesize($conffile) > 8) { // Test on filesize is to ensure that conf file is more that an empty template with just <?php in first line