If you copy and paste, do so correctly. It's /dev/tcp/<machine>/<port>. The seperator is always the forward slash.
And you might want to start with some basic texts about shell programming, because that is not how you construct a loop (except maybe if you can create a DWIMTD function). There's a good introduction available here. It's written for Linux, but there are very few specific things used, most applies to any platform that bash runs on.
Thanks for the guide. But it seems like this line of the code not functioning.
When I check the dev/TCP, it isn't a directory. I've execute the shell code, but the error prompt as below:
i have a unix script that gives me the sysdate from the database EDNAMID.WORLD.What i want my script to do the following
1) Establish a database connection
2) if database connection is successfull then echo the message "Connected"
3) put the o/p of the Sql query in a spool file
4) then... (3 Replies)
I am writing a script to do some conditional logic based on the results of a connection test. I need to capture the output of netcat, the 3 expected conditions are as follows. I need to capture the output of this command. I could write this to a file, but I would like to do it clearer if possible.... (1 Reply)
I want to test if my host can connect to any of the following 10 hosts (192.168.1.0 to 192.168.1.9)
I didnt know which command i should use, so i chose ping. (i wonder if i should use tracepath or sth else)
my code is the following:
#!/bin/bash
clear
firstPart="192.168.1"
maxNum="9"
... (2 Replies)
How do I gain control of the "Connection closed by foreign host" message telnet yields when you connect to it in a shell script? I'm using the output:
#!/usr/local/bin/bash
count=$(ping -c 1 $1 | grep 'received' | awk -F',' '{ print $2 }' | awk '{ print $1 }')
if ; then
echo "$1 PING "... (2 Replies)
Hi,
I am running a shell script which will spawn the telnet and login.
But sometimes, the telnet session itself is not getting spawned.
My requirement is, if the telnet session is not spawned, the user must be notified that it failed.
Is there any command to capture the status of telnet... (2 Replies)
Hello;
I regularly run monitoring scripts over ssh to monitoring scripts
But whenever a server is hung or in maintenance mode, my script hangs..
Are there anyways to trap exit status and be on my way ??
Looked at the ssh manpage and all I can see is a "-q" option for quiet mode ..
Thank... (2 Replies)
Hello Everyone,
My following script is giving me problems, when the SIP trunk goes down and the telnet session is started and just when the command is about to complete the connection is closed then script restarts.
I have noticed that as soon the script types in "sys re" or "sys rebo" or... (6 Replies)
Hi there,
I'm very used to use set -e to break my scripts if any command exits with a non-zero status.
As a policy, I'm willingly expecting echo hello | grep a to break the script.
The commands test 1 -eq $1 && echo hello exits with a non-zero status if $1 is not 1. BUT... It doesn't break... (2 Replies)
Hello,
I'm trying to learn and automate some tasks via a script, but my first ever script failed with "connection closed by foreign host" error. I checked the other discussions but it didn't help. Could you please help?
#!/bin/bash
( sleep 2
echo open x.x.x.x 23
sleep 2
echo user
sleep 2... (1 Reply)