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)

Managing ACL on files

Standard Linux file permissions are applicable for file owners, groups of files, or everyone else in the system. Using standard permissions, we cannot give multiple users or multiple groups different permissions for a single file. This kind of delicate control is provided using ACLs in Linux. We can give permissions to more than one user or one group for the same file.

File owners or root can set ACLs on individual files or on directories if the filesystem is mounted with ACL support enabled. CentOS 7's default filesystem is XFS, which has built-in ACL support. Although not all applications (such as tar) support ACL, it is still a great functionality available in the Linux system.

Viewing ACL permissions