如何在Linux上的python中从进程ID中获取用户名？

Question

我想从Linux上的python中获取进程ID的用户名,所以我可以这样显示:

name    user name   pid
Chrome  wong2       123

Answer 1

你可以从/proc/pid中读取uid /status.他们在一条线上开始Uid:.从uid,您可以导出用户名pwd.getpwuid(pid).pw_name.

UID   = 1
EUID  = 2

def owner(pid):
    '''Return username of UID of process pid'''
    for ln in open('/proc/%d/status' % pid):
        if ln.startswith('Uid:'):
            uid = int(ln.split()[UID])
            return pwd.getpwuid(uid).pw_name

(常量来自fs/proc/array.cLinux内核.)

Answer 2

如果您不想解析/ proc / PID / status文件，并且该进程没有更改UID，并且如果派生一个进程看起来很昂贵，则查找用户名，请尝试：

import os
import pwd
# the /proc/PID is owned by process creator
proc_stat_file = os.stat("/proc/%d" % pid)
# get UID via stat call
uid = proc_stat_file.st_uid
# look up the username from uid
username = pwd.getpwuid(uid)[0]