我需要在Python中运行以下(工作)命令:
ip route list dev eth0 | awk ' /^default/ {print $3}'
使用subprocess
,我必须执行以下操作:
first = "ip route list dev eth0"
second = "awk ' /^default/ {print $3}'"
p1 = subprocess.Popen(first.split(), stdout=subprocess.PIPE)
p2 = subprocess.Popen(second.split(), stdin=p1.stdout, stdout=subprocess.PIPE)
p1.stdout.close() # Allow p1 to receive a SIGPIPE if p2 exits.
output = p2.communicate()[0]
出了点问题p2
。我得到:
>>> awk: cmd. line:1: '
awk: cmd. line:1: ^ invalid char ''' in expression
我该怎么办?在终端上它工作得很好。