[SOLVED] I'm a noob learning python... need help!

[LinuX-M@n1@k]

I'm making a script, but I need a function like 'grep'.

For example:

ping google.com

if ("1 packets transmitted, 1 received" exists):
    print "result1"
elif (1 packets transmitted, 0 received" exists):
    print "result2"

I'm making that script for 3 hours and I'm stuck here

Here's the idea - ping google.com, if the packet is received -> ok; if not -> reboot my adsl modem.

Please, Help me!

[walkerk]

#!/usr/bin/python


import socket

def net_test():
    print "\nTesting your network connection..."    

    try:
        s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
        s.connect(("www.google.com", 80))
        return True

    except socket.error:
        return False

if __name__ == "__main__":
    # Testing network connection
    network = net_test()
    if network == True: 
        print "Good to go"
    else:
        print "Reboot it" 

[azzamite]

I can't give a good answer with such a sort description, but

If you're working with strins, you can try somenthing with the function "find".

>>> 'asdf'.find('a')
0
>>> 'asdf'.find('f')
3
>>> 'asdf'.find('x')
-1

If you're using the function that let you execute a command, just add
the grep in there 'ping www.google.com | grep "1 received"'

[walkerk]

#!/usr/bin/python

import os, sys

temp = "ping www.google.com -C 3"

ping_raw = os.popen(temp)
ping_output = ping_raw.read()


if ping_output.find("bytes") != -1:
    print "network there"
else:
    print "reboot" 

I suggest my first option

[days_of_ruin]

#!/usr/bin/env python
import commands
result = commands.getoutput("ping -c 1 google.com")
if result.find("Unreachable") == -1:
   result = True
else:
   result = False

if result == False:
#restart modem

[LinuX-M@n1@k]

Thank you all!! I have One more thing to do:
Sometimes the telnet session to my modem freezes and needs '^]' (Ctrl-C)... Is there any possible way to send that signal from python?

[days_of_ruin]

#!/usr/bin/python

import os, sys

temp = "ping www.google.com"

ping_raw = os.popen(temp)
ping_output = ping_raw.read()


if ping_output.find("bytes") != -1:
    print "network there"
else:
    print "reboot" 

I suggest my first option

This won't even work because it will ping forever.
You need to add "-c N" where N is the number of "pings" to
attempt(see my other post).

Your first one works though

[walkerk]

This won't even work because it will ping forever.
You need to add "-c N" where N is the number of "pings" to
attempt(see my other post).

Your first one works though

lol.. good catch

[days_of_ruin]

Thank you all!! I have One more thing to do:
Sometimes the telnet session to my modem freezes and needs '^]' (Ctrl-C)... Is there any possible way to send that signal from python?

Don't know if there is a way to do that.That would involve interaction
with a different process which can be done in python
but I have never done it.

Maybe doing "killall nameofprocess".
How would you signal to run that though?

EDIT:Would having your telnet session freezing make pinging google fail?
Then you could just ad that to whatever script you are using.

[LinuX-M@n1@k]

Don't know if there is a way to do that.That would involve interaction
with a different process which can be done in python
but I have never done it.

Maybe doing "killall nameofprocess".
How would you signal to run that though?

EDIT:Would having your telnet session freezing make pinging google fail?
Then you could just ad that to whatever script you are using.

Well, I can wait one minute and it will pass over that part and let me log into the modem Anyway... THANK YOU!! Thank you very much for the help! I'll post the final script in a minute.

Edit: No, it doesn't block the ping... It just doesn't let me log into the modem.