How to compare timestamp of a logfile and generate error in case its 72 hours old ?
Here in this article, we will look at a script created to check a logfile and if its older than 3 days i.e. 72 hours then send an email to...
Category: Shell Scripting
Here we will find tips and tricks for shell script creation in linux.
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How to turn off bell sound during TAB completion in linux ?
I. Introduction Let us have a look at an interesting tip today to turn off/on the bell sound during TAB completion. We will achieve this by changing inputrc file configuration....
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What is character class in bash shell linux and how to use them to search a pattern ?
In Linux, Character Classes is a group of characters which are responsible to perform pattern matching. Character Classes are defined using “[]” i.e. square brackets and matches any of the...
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Different ways to create a file in Linux ?
Today we will look at a very basic article to know various ways to create a file in linux. Lets see the various commands below. 1. Touch command [root@ngelinux ]#...
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How to make variables as read only in bash shell linux ?
Variables in Linux can be made read only using the keyword “readonly”. For example, if we want a variable to contain a value say 10 and must not be changed...
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What is IFS in linux bash shell ?
1. Introduction IFS stands for Internal Field Separator in Linux. $IFS is one of the system variable with default value “space, tab, and a new line”. This system variable signifies...
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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...
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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...