How to add header and trailer line to a file in Linux
In this article, we will see the different ways to add a header record or a trailer record to a…
2 years ago
Shell Scripting
Shell Script to print pyramid of Stars
The Basics So here we will print the pyramid of stars in two parts as shown below. We will loop…
3 years ago
Shell/Bash Script to Find Prime Numbers in Linux
A prime number is a whole number that has exactly 2 different factors, 1 and itself. A number that is…
3 years ago
How to convert text files to all upper or lower case
As usual, in Linux, there are more than 1 way to accomplish a task. To convert a file (input.txt) to…
3 years ago
How to write Bubble sort in Bash
Bubble sort is a simple algorithm that basically bubbles up the elements of the array. This means that it traverses…
3 years ago
10 Sed (Stream Editor) Command Examples
Sed is a stream editor in a UNIX-like operating system that is used for filtering and transforming text. Sed is…
3 years ago
Backtick (`) symbol in Linux Shell Scripting
One of the most useful features of shell scripts is the lowly back quote character, usually called the backtick (`)…
3 years ago
How to Find and Delete Empty Directories and Files in Linux
1. Find empty directories in the current directory using find -empty: $ find . -type d -empty 2. Use the…
3 years ago
How to Check if the script is run by root at the start of the script
Check root at start of script Some scripts need to be run as root and you may want to check…
3 years ago
How to Use user-defined Functions in awk
User-Defined Functions You can create user-defined functions in a awk script file using the func or function keywords. Placement in…
4 years ago