-1
print('Listening on {} {}'.format(ip,porta))
(obj, cliente) = server.accept()
print('connect received from {}'.format(cliente[0]))
while (True):
msg = obj.recv(1024)
**system('rev')**
server.close()
1 answer
0
Use the command rev with | bash:
echo 12345|rev
Returns:
54321
That is to say: **system('{comando que retorna string}|rev')**
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then, I added echo , system('{echo}|rev'), how to pass the variable with the text as parameter to the system call? this is my biggest doubt, because when I connect to the server and call the rev it is active on the server! , then I have to go there and type the message, I would like to receive from the user and pass the variable as parameter to the system call!
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So {} is just an example, but you can also do:
**system('programa {}|rev'.format(texto_como_param))**
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What exactly should the program do? What are you currently doing?
– Woss
well, I must assemble a server that calls the Linux rev command and returns it to the user.
– eneias paulo
Why not
print(msg[::-1])? https://stackoverflow.com/questions/931092/reverse-a-string-in-python?answertab=votes#tab-top– Marcelo Shiniti Uchimura
so I would like the linux utility to do this work for me without using the language resources.
– eneias paulo
https://stackoverflow.com/questions/89228/calling-an-external-command-in-python?answertab=votes#tab-top
– Marcelo Shiniti Uchimura
import socket from os import system ip = '0.0.0' port = 663 server = socket.socket(socket.AF_INET, socket.SOCK_STREAM) server.bind((ip, port) server.Listen(5) print('Listening on {} {}'.format(ip, port) (obj, client) = server.Accept() print('connect Received from {}'.format(client[0])) while (True): msg = obj.recv(1024) msg = [:-1] system('rev') server.close() except: print('error') server.close()
– eneias paulo
would not like to use language features but rather the linux rev utility, so I would like to make a system call and it does this work for me, thanks for the help and sorry some error, my first time here!
– eneias paulo
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– hkotsubo