Python执行dos和Linux命令的方法详解

# -*- coding: utf-8 -*-
import os

# 解决打印时，部分中文乱码问题
os.popen('chcp 65001')

# 查看当前路径
command1 = "chdir"
os.system(command1)

# 查看 ip
command2 = "ipconfig"
os.system(command2)

# -*- coding: utf-8 -*-
import os
# 后台执行 adb命令
command2 = "adb"
os.popen(command2)

# -*- coding: utf-8 -*-
import os

# command1执行成功，才往下执行command2
command1 = "java -version"
command2 = "adb version"

# 使用 && 隔开。
command = "{} && {}".format(command1, command2)
print(command)
os.popen(command)

pip install paramiko

# coding=utf-8
import paramiko


class ServerMessage:
    # 目标服务器信息
    host = "xxx.xxx.xxx.xxx"
    user = "root"
    password = "xxxxxxxx"


class SshChannel:
    def __init__(self, cfg_obj, timeout_sec=15, port=22):
        self._cfg = cfg_obj
        self.ssh_connect_timeout = timeout_sec
        self.port = port
        self.ssh_cli = None

    def __enter__(self):
        try:
            self.connecting_server_with_SSH2()
        except paramiko.ssh_exception.SSHException:
            print("连接{}失败, 请核实配置或重试".format(self._cfg.host))
            self.ssh_cli.close()
        else:
            return self

    def __exit__(self, tp, value, trace):
        self.ssh_cli.close()

    def connecting_server_with_SSH2(self):
        self.ssh_cli = paramiko.SSHClient()
        self.ssh_cli.load_system_host_keys()

        key = paramiko.AutoAddPolicy()
        self.ssh_cli.set_missing_host_key_policy(key)
        self.ssh_cli.connect(self._cfg.host, port=self.port, username=self._cfg.user, password=self._cfg.password,
                             timeout=self.ssh_connect_timeout)

    def execute_cmd(self, cmd, get_pty=False):
        """
        :param cmd: 单个命令
        :return: 服务器的输出信息
        """

        stdin, stdout, stderr = self.ssh_cli.exec_command(cmd, get_pty)
        return stdout.read().decode('utf-8')

    def execute_cmd_list(self, cmd_list):
        """
        :param cmd: 单个命令
        :return: 服务器的输出信息
        """
        # 英文模式下的分号隔开。" ; "
        cmd = "".join([i   " ; " for i in cmd_list])

        stdin, stdout, stderr = self.ssh_cli.exec_command(cmd, get_pty=True)
        return stdout.read().decode('utf-8')


if __name__ == '__main__':
    with SshChannel(ServerMessage) as my_server:
        # 调用单条命令演示
        pwd1 = my_server.execute_cmd("pwd")
        print(pwd1)
        
        # 调用多条命令演示
        pwd2 = my_server.execute_cmd_list(["pwd", "free -m"])
        print(pwd2)