server端
import socket,os,time
server=socket.socket()
server.bind(('localhost',9999))
server.listen()
while True:
conn,addr=server.accept()
print("new connect:",addr)
while True:
print("等待新指令")
data=conn.recv(1024)
if not data:
print("客户端已经断开")
break
print("执行指令:",data)
cmd_res=os.popen(data.decode()).read() #接收字符串，执行结果过也是字符串
print("before send:",len(cmd_res))
if len(cmd_res)==0:
cmd_res="cmd has no out put..."
conn.send(str(len(cmd_res.encode())).encode("utf-8")) #先发大小给客户端 cmd_res先编码成bytes，在判断bytes len长度，len长度不能直接encode,需要先转成字符串str，字符串在编码成byte发送
client_ack=conn.recv(1024) #wait client to confirm 用于消除socket数据粘包
print("ack from client:",client_ack.decode())
conn.send(cmd_res.encode("utf-8")) #汉字转bytes类型要用encode
print("send done")
server.close()
client端
import socket
client=socket.socket()
client.connect(('localhost',9999))
while True:
cmd=input("请输入:").strip()
if len(cmd)==0:continue
client.send(cmd.encode("utf-8"))
cmd_res_size=client.recv(1024) #接收命令结果的长度
print("命令结果过大小:",cmd_res_size)
client.send("客户端已准备接收数据...".encode("utf-8")) #对应server端的 client_ack汉字转成byte类型用 encode
received_size=0
received_data=b''
while received_size < int(cmd_res_size.decode()): #实际收到的数据小于命令执行的结果（实际发送的数据）就不断收，直到数据收完
data=client.recv(1024)
received_size +=len(data) #每次收到的有可能小于1024，所以必须用len判断
#print(data.decode())
received_data +=data
# print(received_size)
else: #received_size < int(cmd_res_size.decode())不成立时执行else,即数据收完了执行else
print("cmd res receive done...",received_size)
print(received_data.decode())
client.close()
在linux后台运行python脚本 加-u参数才能打印日志
nohup python3 -u sock_ssh_server.py >py_run.log 2>1 &
自动拉起 sh脚本
#!/bin/sh
source ~/.bash_profile
ps -ef|grep -v grep|grep '/usr/local/bin/python3 -u /root/sock_ssh_server.py' > /dev/null 2>&1
if [ $? -eq 0 ]
then
echo `date`"------python脚本正在运行" >> ~/result.log
else
nohup /usr/local/bin/python3 -u ~/sock_ssh_server.py > ~/py_run.log 2>1 &
fi
