"file" command in afc shell appears to run on host instead of inside device

[ViRb3]

Test environment

• Host OS version: macOS 14.6.1
• Target device model and iOS version: iPhone 15 Pro, iOS 17.6.1

Describe the bug
I'm trying to run the file command to see information about a file on my device. However, I always get an error that the file does not exist. If I use tab auto-complete, I get suggestions for files in the current working directory of my host, not my iDevice. Surely enough, it also executes file if I specify a file on my host.

To Reproduce

pymobiledevice3 apps afc com.example.app
file example.txt

Expected behavior
Result from device is returned

Logs
Result from host is returned instead

Additional context
N/A

For community

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[doronz88]

Yeah that's because the provided shell isn't a real shell but a mock instead. pmd defines aliases to make it work with connected device, but when u run any other command that isn't mapped as an alias, it runs on your local machine instead. If you want, you can add an implementaion for file which reads the file from the device, and then executes the file command`

[ViRb3]

Ah, I figured that's what happens, but I noticed that file is in the available commands from show-help. I assumed that list comes from AFC itself, so maybe a mapping/alias is just missing?

[ViRb3]

Found the relevant code, seems like this is there for a reason:

pymobiledevice3/pymobiledevice3/services/afc.py

Lines 778 to 785 in dae7c72

	def _setup_shell_commands(self):
	# clear all host commands except for some useful ones
	XSH.env['PATH'].clear()
	# adding "file" just to fix xonsh errors
	for cmd in ['wc', 'grep', 'egrep', 'sed', 'awk', 'print', 'yes', 'cat', 'file']:
	executable = shutil.which(cmd)
	if executable is not None:
	self._register_rpc_command(cmd, executable)

[doronz88]

Created this on xonsh repo:

xonsh/xonsh#5683

If this issue is resolved, I can remove the file hack.
It was just there so it won't break the shell.