mirror of
https://github.com/HorlogeSkynet/archey4
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d676b0b2d5
> Alpine Linux ASCII logo has been borrowed from Neofetch (see <404c955e8f>).
- Known bug :
- The `Disk` entry is not compatible against the BusyBox `df` implementation.
- Alpine users are advised to **disable** it from configuration.
41 lines
1.3 KiB
Python
41 lines
1.3 KiB
Python
"""Simple class (acting as a singleton) to handle processes listing"""
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import os
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import sys
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from subprocess import CalledProcessError, DEVNULL, check_output
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from archey.singleton import Singleton
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class Processes(metaclass=Singleton):
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"""At startup, instantiate this class to populate a list of running processes"""
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def __init__(self):
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try:
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self._processes = check_output(
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[
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'ps',
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(('-u' + str(os.getuid())) if os.getuid() != 0 else '-ax'),
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'-o', 'comm',
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'--no-headers'
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],
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universal_newlines=True, stderr=DEVNULL
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).splitlines()
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except CalledProcessError:
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# The available `ps` implementation may not support passed parameters (hello BusyBox).
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# Let's fall-back on a much simpler approach.
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self._processes = check_output(
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['ps', '-o', 'comm'],
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universal_newlines=True
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).splitlines()[1:]
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except FileNotFoundError:
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print(
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"Please, install first `procps` on your distribution.",
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file=sys.stderr
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)
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sys.exit(1)
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def get(self):
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"""Simple getter to retrieve the processes list"""
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return self._processes
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