Python怎么通过paramiko库实现远程执行linux命令

（1）首先安装paramiko库

pip install paramiko

（2）封装了以下类，可以直接拿来使用

import paramikoclass SSHClient(object):    def __init__(self,host,username,password,port=22):        self.__host=host        self.__username=username        self.__password=password        self.__port=port        self.__ssh=None        self.connect()    def __del__(self):        self.close()    def connect(self):        self.__ssh = paramiko.SSHClient()        self.__ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy())        self.__ssh.connect(hostname=self.__host,port=self.__port,username=self.__username,password=self.__password)    def exec(self,cmd):        print(f"begin to run remote cmd: {cmd}")        stdin, stdout, stderr = self.__ssh.exec_command(cmd,timeout=1800)        returncode = stdout.channel.recv_exit_status()        output=stdout.read().decode('utf-8')        return output    def close(self):        self.__ssh.close()

（3）比如准备一个ip地址为192.168.1.12的linux虚拟机，然后直接按照如下方法使用上面封装的类即可实现远程执行linux命令

ssh=SSHClient(host="192.168.1.12",username="root",password="xxxxxx")output=ssh.exec("ifconfig")print(output)

（4）执行结果如下

begin to run remote cmd: ifconfig
ens33: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.1.12 netmask 255.255.255.0 broadcast 192.168.1.255
inet6 240e:3a1:da7:6590:b39f:e15:6b3d:7e7 prefixlen 64 scopeid 0x0<global>
inet6 fe80::4a67:131d:9133:acdf prefixlen 64 scopeid 0x20<link>
ether 00:0c:29:58:d8:4c txqueuelen 1000 (Ethernet)
RX packets 195340 bytes 148862388 (141.9 MiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 163425 bytes 20837281 (19.8 MiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 1000 (Local Loopback)
RX packets 32 bytes 2592 (2.5 KiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 32 bytes 2592 (2.5 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

virbr0: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
inet 192.168.122.1 netmask 255.255.255.0 broadcast 192.168.122.255
ether 52:54:00:e8:3f:5c txqueuelen 1000 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

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