shell과 pipe 실행하기(subprocess)

#!/usr/bin/python

import subprocess

#mount | grep devpts

p1 = subprocess.Popen(["mount"], stdout=subprocess.PIPE)

p2 = subprocess.Popen(["grep", "devpts"], stdin=p1.stdout, stdout=subprocess.PIPE)

out, err = p2.communicate()

print out

print 'err:'+str(err)

           

[결과]

devpts on /dev/pts type devpts (rw,noexec,nosuid,gid=5,mode=0620)

err:None