How to color a text/string in linux bash shell & make it blink ?
An interesting thing to do when creating shell scripts is to know how to color some text/output and blink it. Today in this article , we will look how to...
Category: Shell Scripting
Here we will find tips and tricks for shell script creation in linux.
-
-
What are different types of positional parameters available in linux ?
Positional parameters as its name suggests are different positional variables automatically defined by linux shell. The shell automatically assigns the passed parameters according to their position in 9 different parameters(1...
-
How to search and replace text where line contains some specific string in Linux shell ?
Today we will look how to search some text in a file and replace specific string on the searched line. For this, we will use sed command i.e. Linux Stream...
-
Regex to look for multiple characters or words in linux bash shell ?
Today we will look at the regex to search/grep multiple characters or words from a file or output in linux. First create a file with below contents. [root@nglinux ]# cat...
-
Use of dot “.” in regular expressions during search/grep in bash shell linux ?
Today we will look at the usage of dot “.” on Linux bash shell and how to use it in shell scripts to match a pattern. I. Usage of “.”...
-
How to get length of a string/integer variable in linux bash shell ?
Today in this post, we will look how to get length of a variable in linux whether its a string or integer. Getting variable length in Linux 1. Using shell...
-
How to unset variables in linux bash shell (normal and read only variables) ?
We all know that a variable is defined by simply assigning a value to it. However bash shell also provides a feature to unset it, in order to free it...
-
How to look/grep for special characters in a file in linux bash shell ?
Today in this post, we will look how to search or grep special characters in a file text. To search special characters in linux, we need to escape them using...
-
How to remove empty lines from a file in bash shell linux ?
Today in this post, we will look how to remove empty lines from a file in bash shell linux. This is the easiest way to achieve this task. Removing empty/null...
-
How to test a valid IP address in Linux Bash Shell ?
Here is a quick tip to test a valid IP address on linux bash shell. I have recently used it in one of the scripts i need to prepare. I....