Ho adattato lo script perl di Greg Ercolano allo script python.
#!/usr/bin/env python2.7
import subprocess as subp
import os.path
import sys
import re
from collections import defaultdict
def psaxo():
cmd = ['ps', 'axo', 'ppid,pid,comm']
proc = subp.Popen(cmd, stdout=subp.PIPE)
proc.stdout.readline()
for line in proc.stdout:
yield line.rstrip().split(None,2)
def hieraPrint(pidpool, pid, prefix=''):
if os.path.exists(pidpool[pid]['cmd']):
pname = os.path.basename(pidpool[pid]['cmd'])
else:
pname = pidpool[pid]['cmd']
ppid = pidpool[pid]['ppid']
pppid = pidpool[ppid]['ppid']
try:
if pidpool[pppid]['children'][-1] == ppid:
prefix = re.sub(r'^(\s+\|.+)[\|'](\s+\|- )$', '\g<1> \g<2>', prefix)
except IndexError:
pass
try:
if pidpool[ppid]['children'][-1] == pid:
prefix = re.sub(r'\|- $', ''- ', prefix)
except IndexError:
pass
sys.stdout.write('{0}{1}({2}){3}'.format(prefix,pname,pid, os.linesep))
if len(pidpool[pid]['children']):
prefix = prefix.replace('-', ' ')
for idx,spid in enumerate(pidpool[pid]['children']):
hieraPrint(pidpool, spid, prefix+' |- ')
if __name__ == '__main__':
pidpool = defaultdict(lambda:{"cmd":"", "children":[], 'ppid':None})
for ppid,pid,command in psaxo():
ppid = int(ppid)
pid = int(pid)
pidpool[pid]["cmd"] = command
pidpool[pid]['ppid'] = ppid
pidpool[ppid]['children'].append(pid)
hieraPrint(pidpool, 1, '')
Esempio di output:
launchd(1)
|- syslogd(38)
|- UserEventAgent(39)
|- kextd(41)
|- fseventsd(42)
|- thermald(44)
|- appleeventsd(46)
...
|- iTerm(2879)
| |- login(2883)
| | '- -bash(2884)
| | '- Python(17781)
| | '- ps(17782)
| |- login(7091)
| | '- -bash(7092)
| | '- ssh(7107)
| '- login(7448)
| '- -bash(7449)
| '- bash(9040)
| '- python(9041)
|- installd(2909)
|- DataDetectorsDynamicData(3867)
|- netbiosd(3990)
|- firefox(5026)
...