Introduction Input/output redirection is an extremely important aspect of writing bash shell scripts and working with the bash shell command line interface in general. A here document is a form of I/O redirection that tells the...
Read MoreIntroduction Over the course of the last couple of years we’ve written numerous posts on understanding and experimenting with different aspects of bash shell scripting. In this article we’ll focus on how we could...
Read MoreWe may frequently find ourselves in situations where we want to run a command periodically to view its progress. A watch command is an amazing tool meant to be used for this exact purpose. Please read our article on the Linux...
Read MoreIntroduction Today I received an interesting requirement. A customer wanted their FTP users on several new servers (having the same username) to have the same password as that of the users on an older server. The problem was...
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Many people know about cat command which is useful in displaying entire file content. But in some...
Read MoreIn some situations when executing a command or a Linux shell script we may require some manual intervention. The yes command is simple built-in command which will help you remove this manual intervention stuff in your scripts....
Read MoreThe linux shell has provided us with many hidden gems. Some of things are string manipulation without using external commands like SED/AWK. In this post we will see how to convert a string from lower case to upper and upper case...
Read MoreIn this post we will see how to run a shell script you just received or created. There are many ways we can execute a shell script and some of the ways you don't require execute permissions as well on that script....
Read MoreThis is a small script to rename multiple files from CAPITAL to small letters. Ok, why we require to do this? Recently we bought a new cam which is naming all photos in capital and it is very much difficult for me to change...
Read MoreThis is a small script which will takecare of blocking and unblocking ports by asking user about his desire. Just copy this code to your system and change permissions and start executing it. #!/bin/bash #Author: Surendra...
Read MoreThis is a small script which will convert your video file into a gif file so that we can share it across Internet so that video player is not required to play it. The script is written in Linux Bash shell...
Read MoreThis is one of the prompts available for us in Linux/Unix. The other prompts available for us are PS1, PS2, PS3. This prompt is very much useful when debugging shell scripts using -x option for set...
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My name is Surendra Kumar Anne. I hail from Vijayawada which is cultural capital of south Indian state of Andhra Pradesh. I am a Linux evangelist who believes in Hard work, A down to earth person, Likes to share knowledge with others, Loves dogs, Likes photography. At present I work at Bank of America as Sr. Analyst Systems and Administration. You can contact me at surendra (@) linuxnix dot com.