Created
June 19, 2017 03:02
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#!/usr/bin/python | |
# -*- coding: utf-8 -*- | |
import os | |
import sys | |
import shlex | |
import subprocess | |
import select | |
def run_cmd(cmd, live=False, readsize=10): | |
#readsize = 10 | |
cmdargs = shlex.split(cmd) | |
p = subprocess.Popen(cmdargs, stdout=subprocess.PIPE, stderr=subprocess.PIPE) | |
stdout = '' | |
stderr = '' | |
rpipes = [p.stdout, p.stderr] | |
while True: | |
rfd, wfd, efd = select.select(rpipes, [], rpipes, 1) | |
if p.stdout in rfd: | |
dat = os.read(p.stdout.fileno(), readsize) | |
if live: | |
sys.stdout.write(dat) | |
stdout += dat | |
if dat == '': | |
rpipes.remove(p.stdout) | |
if p.stderr in rfd: | |
dat = os.read(p.stderr.fileno(), readsize) | |
stderr += dat | |
if live: | |
sys.stdout.write(dat) | |
if dat == '': | |
rpipes.remove(p.stderr) | |
# only break out if we've emptied the pipes, or there is nothing to | |
# read from and the process has finished. | |
if (not rpipes or not rfd) and p.poll() is not None: | |
break | |
# Calling wait while there are still pipes to read can cause a lock | |
elif not rpipes and p.poll() == None: | |
p.wait() | |
return p.returncode, stdout, stderr |
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