远程执行命令

一、需求

# server 下发命令
# client 执行命令

# ssh协议
# import os
# ret = os.popen('ls').read()
# print(ret)

import subprocess
# 内置模块 和os模块的功能有相似之处
# 能执行操作系统的命令的功能
ret = subprocess.Popen('dir',    # 要执行的命令
                       shell=True,  # 表示要执行的是一条系统命令
                       stdout=subprocess.PIPE, # 存储执行结果的正常信息
                       stderr=subprocess.PIPE) # 存储执行结果的错误信息
print('stdout : ',ret.stdout.read().decode('gbk'))
print('stderr : ',ret.stderr.read().decode('gbk'))



二、2.1  TCP
server端

import socket
sk = socket.socket()
sk.bind(('127.0.0.1',8090))
sk.listen()

conn,addr = sk.accept()
while True:
    cmd = input('cmd : ')
    if cmd == 'q':
        conn.send(cmd.encode('utf-8'))
        break
    conn.send(cmd.encode('utf-8'))
    print('stdout : ',conn.recv(1024).decode('gbk'))
conn.close()
sk.close()


client端

import socket
import subprocess
sk = socket.socket()
sk.connect(('127.0.0.1',8090))
while True:
    cmd = sk.recv(1024).decode('utf-8')
    if cmd == 'q': break
    res = subprocess.Popen(cmd,shell=True,
                     stdout=subprocess.PIPE,
                     stderr=subprocess.PIPE)
    sk.send(res.stdout.read())
    sk.send(res.stderr.read())
sk.close()


2.2 UDP
server端

import socket
sk = socket.socket(type=socket.SOCK_DGRAM)
sk.bind(('127.0.0.1',8090))
msg,addr = sk.recvfrom(1024)
while True:
    cmd = input('cmd : ')
    if cmd == 'q':
        sk.sendto(cmd.encode('utf-8'),addr)
        break
    sk.sendto(cmd.encode('utf-8'),addr)
    print('stdout : ',sk.recvfrom(2048)[0].decode('gbk'))
    print('stderr : ',sk.recvfrom(2048)[0].decode('gbk'))
sk.close()

client端

import socket
import subprocess
sk = socket.socket(type=socket.SOCK_DGRAM)
sk.sendto(b'111',('127.0.0.1',8090))
while True:
    cmd = sk.recvfrom(1024)[0].decode('utf-8')
    if cmd == 'q': break
    res = subprocess.Popen(cmd,shell=True,
                     stdout=subprocess.PIPE,
                     stderr=subprocess.PIPE)
    sk.sendto(res.stdout.read()*100,('127.0.0.1',8090))
    sk.sendto(res.stderr.read(),('127.0.0.1',8090))
sk.close()