[interface] Too many open files in system (-23)

[joshschmelzle]

In some scenarios, it is possible to hit the open file limit.

2022-10-18 23:39:16,355 [DEBUG] interface: command failed: Too many open files in system (-23)

I believe refactoring the run_command() code by using a context manager may fix this problem. Otherwise we may need to explicitly close file descriptors after opening them.

wlanpi-profiler/profiler/helpers.py

Lines 536 to 550 in 1bc9070

	def run_command(cmd: list, suppress_output=False) -> str:
	"""Run a single CLI command with subprocess and return stdout or stderr response"""
	cp = subprocess.run(
	cmd,
	encoding="utf-8",
	shell=False,
	check=False,
	capture_output=True,
	)
	if not suppress_output:
	if cp.stdout:
	return cp.stdout
	if cp.stderr:
	return cp.stderr