Permissions and Process Management

Introduction to process management

The Linux operating system has hundreds if not thousands of processes running simultaneously. These can include the terminal, web servers, executed commands, and any databases that are running in the background or the foreground.

A system administrator or a pentester should be able to efficiently manage these processes. They need to understand that certain permissions have been granted to the different files and directories that form the Linux system.

In this lesson, we’ll learn about these files and directory permissions and the management of the different processes within the Linux system.

File and directory permissions

The act of granting permission to different files and folders is a critical aspect of the Linux system. It’s used in the optimization of the system because it ensures that only the required tasks are running. This involves different access levels among the different users.

The Linux system has a way of securing files and directories through the segmentation of administrators (root users) and normal users. The segmentation allows the administrators the ownership of files and the ability to secure them as well.

We’ll cover the following commands:

File permissions

The Linux system has different file access rights depending on the creators among the system users. These rights include reading, writing, and executing files.

Using the ls -l command in the terminal ...