killall

#!/usr/bin/env python3

"""
This programm kills all processes by given process name with SIGTERM
"""

import sys
import signal
import os
from pathlib import Path


def killall(name):
    for path in Path('/proc').glob('*'):
        if path.name.isdigit():
            try:
                comm_path = path / 'comm'
                comm = comm_path.read_text().strip()
                if name == comm:
                    pid = int(path.name)
                    print('Killing process', path.name, file=sys.stdout)
                    os.kill(pid, signal.SIGTERM)
            except (PermissionError, FileNotFoundError):
                pass
            except Exception as e:
                print('Got exception:', e, file=sys.stdout)
                return 1
    return 0


def main():
    if not sys.stdin.isatty():
        name = sys.stdin.read().strip()
    elif len(sys.argv) != 2:
        print(__doc__)
        print(sys.argv[0], 'exact_process_name')
        print('or')
        print('echo procname |', sys.argv[0])
        sys.exit(1)
    else:
        name = sys.argv[1]
    return killall(name)


if __name__ == '__main__':
    sys.exit(main())