Linux Archives - Page 9 of 42

How to Test If Variable is Number in Shell Script

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.

Sometimes you may need to pass shell variable in Linux. Here is how to pass variable in cURL command.

Often you may need to read file using shell script. Here is a shell script to read data from text file in Linux.

Sometimes you may need to split one column into multiple columns. Here is how to split columns using awk command in Linux.