Linux Archives - Page 18 of 69

How to Concatenate String Variables in Shell Script

Sometimes you may need to concatenate string variables in shell script. Here is how to do it.

Often you may need to loop through arguments in shell script. In this article, we will learn how to iterate over arguments in shell script.

Sometimes you may need to create shell script that accepts optional arguments. Here is how to create bash script that takes optional arguments.

Often you may need to check if a variable is a number in shell script and process it. Here is how to test if variable is number in Shell Script.

Sometimes you may need to prevent accidental file deletion in Linux. Here are the steps to do so.

Sometimes you may need to make file and directory undeletable in Linux. Here is how to do it.

By default, Linux logs out users automatically after timeout period. Here is how to disable auto logout in Linux.

Sometimes you may need to make files unreadable in Linux to protect them. Here are the steps to make file unreadable in Linux.

Sometimes you may need to create ISO image from CD in Linux. Here are the steps to make ISO image from CD/DVD.

Sometimes you may need to clear/delete log files in Linux. Here is shell script to clear/delete log files.