Linux is the best-known and most-used open source operating system. As an operating system, Linux is software that sits underneath all of the other software on a computer, receiving requests from those programs and relaying these requests to the computer’s hardware.
In many cases, a software’s creator may have made a Linux version of the same program you use on other systems. In short: if you can use a computer or other electronic device, you can use Linux. But Linux also is different from other operating systems in many important ways. First, and perhaps most importantly, Linux is open source software.
Get the highlights in your inbox every week. Linux is the best-known and most-used open source operating system. As an operating system, Linux is software that sits underneath all of the other software on a computer, receiving requests from those programs and relaying these requests to the computer’s hardware.
Like other operating systems, Linux has a graphical interface, and the same types of software you are accustomed to, such as word processors, photo editors, video editors, and so on. In many cases, a software’s creator may have made a Linux version of the same program you use on other systems.
What is the Linux command line?
Because Linux is an open source OS, combinations of software can vary between Linux distributions. What’s a command line? The command line is your direct access to a computer. It’s where you ask software to perform hardware actions that point-and-click graphical user interfaces (GUIs) simply can’t ask.
Such tasks in linux are referred to as cron jobs (Crontab). Cron jobs are used for automation of tasks that come in handy and help in simplifying the execution of repetitive and sometimes mundane tasks.
What is’at’in Linux and how to use it?
‘at’ is a program to carry out commands that you intend to do only once. It’s mostly used for scheduling specific jobs under specific circumstances. If you had to rotate your company’s webserver logs every Saturday, ‘at’ is not the appropriate tool for the job. That would be done best with ‘cron’, about which we will talk about shortly.
How to schedule multiple tasks to use a single cron job?
To schedule multiple tasks to use a single cron job, separate the tasks using a semicolon for example: Some of the cron jobs can easily be configured using special strings that correspond to certain time intervals. For example, It will execute a task in the first minute of every hour. It executes a task in the first minute of every day (midnight).