python中执行shell命令的几个方法小结

来源：http://www.jb51.net/article/55327.htm

Python 执行 shell 命令

最近有个需求就是页面上执行shell命令，第一想到的就是os.system

os.system('cat /proc/cpuinfo')

output = os.popen('cat /proc/cpuinfo')
print output.read()

(status, output) = commands.getstatusoutput('cat /proc/cpuinfo')
print status, output

>>> import commands
>>> commands.getstatusoutput('ls /bin/ls')
(0, '/bin/ls')
>>> commands.getstatusoutput('cat /bin/junk')
(256, 'cat: /bin/junk: No such file or directory')
>>> commands.getstatusoutput('/bin/junk')
(256, 'sh: /bin/junk: not found')
>>> commands.getoutput('ls /bin/ls')
'/bin/ls'
>>> commands.getstatus('/bin/ls')
'-rwxr-xr-x 1 root 13352 Oct 14 1994 /bin/ls'

使用 paramiko 连接ssh 远程主机 执行 shell 命令

import paramiko

if __name__ == '__main__':

    ip = '172.28.11.132' 
    port = 22           
    user_name = "root"  
    user_password = r'123456' 
    ssh = paramiko.SSHClient()
    ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy())

    ssh.connect(ip, port, user_name, user_password)
    cmd = 'ls /'
    stdin, stdout, stderr = ssh.exec_command(cmd)
    print stdout.readlines()