Book Image

CentOS Quick Start Guide

By : Shiwang Kalkhanda
Book Image

CentOS Quick Start Guide

By: Shiwang Kalkhanda

Overview of this book

Linux kernel development has been the worlds largest collaborative project to date. With this practical guide, you will learn Linux through one of its most popular and stable distributions. This book will introduce you to essential Linux skills using CentOS 7. It describes how a Linux system is organized, and will introduce you to key command-line concepts you can practice on your own. It will guide you in performing basic system administration tasks and day-to-day operations in a Linux environment. You will learn core system administration skills for managing a system running CentOS 7 or a similar operating system, such as RHEL 7, Scientific Linux, and Oracle Linux. You will be able to perform installation, establish network connectivity and user and process management, modify file permissions, manage text files using the command line, and implement basic security administration after covering this book. By the end of this book, you will have a solid understanding of working with Linux using the command line.
Table of Contents (11 chapters)

Understanding processes

This section deals with various concepts related to processes, such as their types, states, attributes, and so on. Process management is an essential skill that all types of users of Linux systems should master.

Defining a process

A process is an instance of a program in execution. It differs from a program or command in the sense that a single program can start several processes simultaneously. Each process uses several resources, as mentioned in the following list:

  • An address space in memory
  • Each process has some security properties, such as ownership, privileges, and so on
  • Each process has a state
  • Each process has local and global environment variables
  • Each process has a scheduling context
  • Each...