I'm trying to send command in tetnet but it's not working. i tried different code find in this forum but no one works. it's for rebooting a device. i'm using python 3.6.
import telnetlib
host = "192.168.1.0"
port = 23
timeout = 100
session = telnetlib.Telnet(host, port, timeout)
session.write("administrator\n").encode('ascii')
session.write("password\n").encode('ascii')
session.write("reboot\n").encode('ascii')
The Telnet.write() function takes a byte string. This can either be supplied by encoding just the string (you tried encoding the return from the function), e.g.
session.write("administrator\n".encode('ascii'))
or by prefixing your strings with b as follows:
import telnetlib
host = "192.168.1.0"
port = 23
timeout = 100
with telnetlib.Telnet(host, port, timeout) as session:
session.write(b"administrator\n")
session.write(b"password\n")
session.write(b"reboot\n")
to connect and use the telnet protocol you can use telnetlib when you can install it using pip3 install telnetlib3 , in my case I am using ubuntu 22.. and it is work 100% with no issues,
import telnetlib
class TelnetFunction:
def __init__(self, host, port, username, password) -> None:
self.connect(host, port, username, password)
def connect(self, host, port, username, password):
self.tn = telnetlib.Telnet(host, port)
self.tn.read_until(b"login: ")
self.tn.write(username.encode('ascii') + b"\n")
if password:
self.tn.read_until(b"Password: ")
self.tn.write(password.encode('ascii') + b"\n")
print(self.executCommand(""))
def isConnected(self):
return self.tn.sock.fileno()
def executCommand(self, command):
self.tn.write(command.encode('ascii'))
output = self.tn.read_until(b"$ ").decode('utf-8')
return output
def close(self):
self.tn.close()
and for using this class try this code:
host = "your_host" #example 192.168.1.12
username = "username_machin" #username of your machine on Ubuntu you can use "whoami" in CLI
password = "*******"#password of your machin
port = 23 #the used port
tn = TelnetFunction(host, port, username, password)
tn.executCommand(input('your command: ')+'\b') #execute your command in the server
tn.close() #close the connection with the server
if you got any problem let me know.
telnetlib and telnetlib3 are not the same. The first is from the Python standard library, the latter is not. Your example code should run just fine without pip3 install telnetlib3.