bash shell scripting
A shell script is a code (script) written for the shell or command line interpreter of an operating system such as Unix. It allows users to automate tasks which would…
Reading files in a directory using bash
The following code reads files in a directory called SQL. Then if runs an SQL command with the file name as input. Finally, it deletes the file from the directory.
Some quick APT commands
Advanced Packaging Tool (APT) is used by Debian system to manage package installations. Following are some quick commands: Some common commands that can be used with APT: Installing packages Removing…
Running Linux Commands on Microsoft Windows
DOS commands don’t pack a punch leaving you wishing you could use Linux commands in Windows. Wish granted. You can run Linux commands on Windows. The answer is git bash.…
How to modify the host file
Your host file enables your system to override the DNS setting for a domain. This change only affects your system. The syntax of a host file entry is as follows…
Using ls to display a file tree
Recently, I found a really elegant solution to display a file tree using the ls command. I like is so much that I feel the need to share it. The…
Linux Redirection
Linux processes generally take input from standard input (keyboard), write output to standard out (screen) and may write to standard error if there are any error message which need to…
Connecting to Linux Instance using SSH on AWS EC2
Go to (http://aws.amazon.com) Sign in Click on EC2 Click on Running Instances Select you pem key. It should match the key pair name. Make sure that the pem key has…
How to find Apache username on my server
The easiest way find the process of an application running on the server is to type the following command: This command would output a list of processes. I can see…
Bash: using positional parameter
Positional parameters are used to pass arguments to a command line application. This post shows you how to used positional parameter in bash. On your terminal, type the following command:…