don't hardcode /bin/bash in eb script, RPATH wrapper script, and run_…

…shell_cmd

easybuild/scripts/rpath_wrapper_template.sh.in

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 ##
 # Copyright 2016-2023 Ghent University
 #

easybuild/tools/run.py

@@ -276,7 +276,9 @@ def to_cmd_str(cmd):
     # (which could be dash instead of bash, like on Ubuntu, see https://wiki.ubuntu.com/DashAsBinSh)
     # stick to None (default value) when not running command via a shell
     if use_bash:
-        executable, shell = '/bin/bash', True
+        bash = shutil.which('bash')
+        _log.info(f"Path to bash that will be used to run shell commands: {bash}")
+        executable, shell = bash, True
     else:
         executable, shell = None, False
 

eb

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 ##
 # Copyright 2009-2023 Ghent University
 #