Shells are just command interpreters as per POSIX definition. Gtk is a library, and meant to be imported in actual programming languages. So the answer is no, you can't use full-blown Gtk stuff in shell scripts, only the limited set of things that
But you can use Python. It's a scripting language, yet more suitable for system and programming stuff than shells. You can call commands stored in places like
/usr/bin via subprocess module in Python. I've done so many times for my Gtk apps.
Here's for example a standard function I use for calling external commands from Python script:
def run_cmd(self, cmdlist):
""" Reusable function for running external commands """
new_env = dict(os.environ)
new_env['LC_ALL'] = 'C'
stdout = subprocess.check_output(cmdlist, env=new_env)
And here's an example using it in my
xrandr-indicator for switching screen resolution from Ubuntu's top panel; as the name suggests, it calls
xrandr behind the scenes :
As for shell, you'd need to call a shell with -c argument. So something like this could work:
subprocess.Popen(['bash','-c', 'echo hello world'])
Alternatively, consider implementing interprocess communication. Make GUI
in python, but let it communicate with a shell script via named pipe or file.