Bash scripts are used by Systems Administrators, Programmers, Network Engineers, Scientists and just about anyone else who uses a Linux/ Unix system regularly. No matter what you do or what your general level of computer proficiency is, you can generally find a way to use Bash scripting to make your life easier. Bash is a command line language.

I would like to initiate a telnet session, send a command, and store the output in a variable using bash. To do this manually, I do: telnet ip port >command1 However, I'm not sure how to scrip File1- IP-list -- contains a list of IPs that you want to execute the script. File2- ssh.sh -- reads the IP-list and execute File3 which is enableint script. File3 - enableint.sh --- script to shuts down an interface. Make ssh.sh and enableint.sh files as executable with chmod +x and you just need to run ./ssh.sh. File1-IP-list. 10.10.1.1. 10.2.3.2 The equally common situation, when there is some Bash script on a Linux machine and it needs to connect from it over SSH to another Linux machine and run this script there. The idea is to connect to a remote Linux server over SSH, let the script do the required operations and return back to local, without need not to upload this script to a You can use this command for check the connection of a application. telnet IPADDRESS PORT telnet 192.168.0.10 80 <- http telnet 192.168.0.10 25 <- smtp

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May 19, 2017 · 2. Make a Script exit When Fails. Sometimes bash may continue to execute a script even when a certain command fails, thus affecting the rest of the script (may eventually result in logical errors). Use the line below to exit a script when a command fails: #let script exit if a command fails set -o errexit OR set -e 3.

Jan 30, 2012 · Bash Script To Ping And Telnet multiple hosts by Ramakanta · Published January 30, 2012 · Updated March 5, 2015 Few times in administrative jobs we need to make sure some services or ports are always open and listening to monitor the same we can use below script can be used to ping and telnet to different hosts running on different ports.

Bash scripts are used by Systems Administrators, Programmers, Network Engineers, Scientists and just about anyone else who uses a Linux/ Unix system regularly. No matter what you do or what your general level of computer proficiency is, you can generally find a way to use Bash scripting to make your life easier. Bash is a command line language. Useful and time saving bash commands in Linux; Bash Script to get Low Battery Alert in Linux; Sorting an array in Bash using Bubble sort; Bash shell script to find sum of digits; Bash program to check if the Number is a Prime or not; Bash program to check if the Number is a Palindrome; Write a bash script to print a particular line from a file Performs brute-force password auditing against telnet servers. Script Arguments . telnet-brute.autosize . Whether to automatically reduce the thread count based on the behavior of the target (default: "true") telnet-brute.timeout . Connection time-out timespec (default: "5s") There is a simple way to write a command once and have it executed N times using Bash loop FOR. In this short note you’ll find how to execute some command a number of times in a row. The best way to run a command N times is to use loop FOR in Bash. Cool Tip: The same loop can be used for a mass mail sending! Send bulk emails from the Linux Jul 05, 2017 · Enable Telnet Command in PowerShell. If you are a Windows System Administrator, you will surely know the importance of Telnet command in your day-to-day life. As you, know that all version of Windows (starting from Vista and above) comes with Telnet client feature disabled by default. May 14, 2010 · Finally, got sick of copy/pasting and decided to write a quick script. But scripting telnet is a pain. Netcat to the rescue! Call the script with the following arguments: $ ./smtp.netcat.test mx.example.com 25 from@example.com to@example.com And here's the script: #!/bin/bash # script to send test mail with netcat.