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Run cron job in Linux

A cron job tasks can be scheduled to run by minutes, hours, day of the month, months, day of the week, or any combination of these too. Cron jobs can be used to automate system administration task...

Setup and Manage Log Rotation in Linux

Log files are the most valuable feature available in the Linux family. The Logrotate tool helps you to administrate, backup, and monitor log files in Linux. Any service installed on your Linux sys...

DevOps Project CI/CD Pipeline Full Course

In this course, we will create a CI/CD Pipeline using the following tools, AWS with Terraform, NodeJS Simple API, Jenkins, Ansible, Docker, and DeletifyBot for deployment. You must have basic knowl...

Cheatsheets for Bash Scripting

If you are looking for cheat sheets for bash scripting, then this section is for you. The escape or special characters are used in the format string. Here is a list of the most common escape or sp...

Bash Scripting Complete Course

Learn bash or shell programming for Linux, Unix, and Mac. If you want to learn how to write bash scripts like a pro, solve real-world problems, or automate repetitive and complex tasks, then this ...

Write Your Own Command in Bash

Maybe you are thinking that how you can create your own bash command same as ls, echo, touch, rm, and etc. Create a bin folder in the user’s home directory. mkdir ~/bin Sync hello.sh file with ...

Wildcards in Bash

Wildcards are used in search terms, to represent one or more characters. In wildcards, we do have 3 operators, asterisk, question mark, and square brackets. The * asterisk can represent any number...

Variables in Bash

In many programming languages, we use to create a variable, which must start with either letter, or underscore, but you cannot start a variable with numbers, or any special characters. Create a va...

Subshell/Grouping in Bash

A Subshell/Grouping can be used to do parallel processing. When you run a script, it creates a new process called Subshell, and your script will get executed using a Subshell. First execute everyt...

String Slicing & Substitution in Bash

String Slicing & Substitution is the most commonly used method in any programming language, which split the values from either string or an array. In this section, I will cover only string slic...