1,基本的paramiko(exec_command)
ssh = paramiko.SSHClient() ssh.load_system_host_keys() ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy()) ssh.connect(host, port=port, username=username, password=password, timeout=timeout) stdin, stdout, stderr = ssh.exec_command("cd /home; pwd; cd /bridge; pwd") print(stdout.read().decode('utf-8'))
输出为:
/home
/home
假设linux目录结构是/home/bridge
原本是想进到home目录下pwd一下,再进到/home/bridge目录下pwd一下,却发现其实第二次cd /bridge时失败了,由于exec_command没有交互功能,第二次仍是回到了根目录
同理,若是像网络设备这种登录完还要enable,输入密码的也不行
2,判断回显的交互
ssh = paramiko.SSHClient() ssh.load_system_host_keys() ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy()) ssh.connect(hostname='192.168.1.2', port=22, username='cisco', password='cisco') # 地址是192.168.1.2,用户名/密码都是cisco client = ssh.invoke_shell() def run_cmd(cmd, endswith): # 形参:cmd命令,结束符 buff = '' client.send(cmd) while not buff.endswith(endswith): resp = str(client.recv(1024), 'utf-8') buff += resp return buff res = '' res += run_cmd('enable\n', 'Password: ') res += run_cmd('cisco\n', '#') res += run_cmd('terminal length 0\n', '#') res += run_cmd('show run\n', '#') print(res) ssh.close()