File: pidof.py

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#!/usr/bin/env python3

# Copyright (c) 2009, Giampaolo Rodola', karthikrev. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.


"""
A clone of 'pidof' cmdline utility.
$ pidof python
1140 1138 1136 1134 1133 1129 1127 1125 1121 1120 1119
"""

from __future__ import print_function
import psutil
import sys


def pidof(pgname):
    pids = []
    for proc in psutil.process_iter(['name', 'cmdline']):
        # search for matches in the process name and cmdline
        if proc.info['name'] == pgname or \
                proc.info['cmdline'] and proc.info['cmdline'][0] == pgname:
            pids.append(str(proc.pid))
    return pids


def main():
    if len(sys.argv) != 2:
        sys.exit('usage: %s pgname' % __file__)
    else:
        pgname = sys.argv[1]
    pids = pidof(pgname)
    if pids:
        print(" ".join(pids))


if __name__ == '__main__':
    main()