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Operating Systems Solaris Ping trace telnet monitoring script Post 302539380 by Smiling Dragon on Sunday 17th of July 2011 03:59:45 AM
Old 07-17-2011
Well the telnet one I gave above (the single line) should work as-is:
Code:
echo "b" | telnet -e "b" $i $port

Where $i is you target host/ip and $port is the port number you need to try.

The echo "b" and the -e "b" parts are telling telnet to immediately quit once it gets a connection. This means you can use your above logic with it:
Code:
echo "b" | telnet -e "b" $i $port && echo "${i}:${port} is OK"

For your last question with ping and the if statement, I'm not actually sure what you are trying to do to be honest,but perhaps you want something like this?
Code:
#!/bin/sh
# You don't need bash for something this simple, sh is just fine and works everywhere
WEB="www.google.com"

if ping -c 5 -w 5 -n ${WEB} | grep -q "bytes from"
then
  echo ${WEB} " is up"
else
  echo ${WEB} " is DOWN"
fi

This User Gave Thanks to Smiling Dragon For This Post:
 

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RXTELNET(1)						    BSD General Commands Manual 					       RXTELNET(1)

NAME
rxtelnet -- start a telnet and forward X-connections. SYNOPSIS
rxtelnet [-l username] [-k] [-t telnet_args] [-x xterm_args] [-K kx_args] [-w term_emulator] [-b telnet_program] [-n] [-v] host [port] DESCRIPTION
The rxtelnet program starts an xterm window with a telnet to host host. From this window you will also be able to run X clients that will be able to connect securely to your X server. If port is given, that port will be used instead of the default. If setting up the X forwarding failes, rxtelnet will still telnet in to the remote host, but without X forwarding. The supported options are: -l Log in on the remote host as user username. -k Disables keep-alives. -t Send telnet_args as arguments to telnet. -x Send xterm_args as arguments to xterm. -X Send kx_args as arguments to kx. -w Use term_emulator instead of xterm. -b Use telnet_program instead of telnet. -n Do not start any terminal emulator. -v Be verbose. EXAMPLE
To login from host foo (where your display is) to host bar, you might do the following. 1. On foo: rxtelnet bar 2. You will get a new window with a telnet to bar. In this window you will be able to start X clients. SEE ALSO
kx(1), rxterm(1), telnet(1), tenletxr(1), kxd(8) KTH_KRB March 7, 2004 KTH_KRB
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