Sign In Start Free Trial
Account

Add to playlist

Create a Playlist

Modal Close icon
You need to login to use this feature.
  • Book Overview & Buying CentOS 7 Linux Server Cookbook, Second Edition
  • Table Of Contents Toc
CentOS 7 Linux Server Cookbook, Second Edition

CentOS 7 Linux Server Cookbook, Second Edition - Second Edition

By : Jonathan Hobson
4.1 (10)
close
close
CentOS 7 Linux Server Cookbook, Second Edition

CentOS 7 Linux Server Cookbook, Second Edition

4.1 (10)
By: Jonathan Hobson

Overview of this book

This book will provide you with a comprehensive series of starting points that will give you direct access to the inner workings of the latest CentOS version 7 and help you trim the learning curve to master your server. You will begin with the installation and basic configuration of CentOS 7, followed by learning how to manage your system, services and software packages. You will then gain an understanding of how to administer the file system, secure access to your server and configure various resource sharing services such as file, printer and DHCP servers across your network. Further on, we cover advanced topics such as FTP services, building your own DNS server, running database servers, and providing mail and web services. Finally, you will get a deep understanding of SELinux and you will learn how to work with Docker operating-system virtualization and how to monitor your IT infrastructure with Nagios. By the end of this book, you will have a fair understanding of all the aspects of configuring, implementing and administering CentOS 7 Linux server and how to put it in control.
Table of Contents (17 chapters)
close
close
16
Index

Working with Postfix

In a previous recipe, we learned how to install and configure Postfix as our domain-wide e-mail server. When it comes to working with e-mails, there are lots of different tools and programs available for Linux and we already showed you how to send e-mails through the sendmail program as well as the swaks utility. Here in this recipe, we will show you how to work with one of the most commonly used mail utilities in Unix and Linux, called mailx, which has some useful features missing in the sendmail package for sending mails or reading your mailbox.

How to do it...

We will begin this recipe by installing the mailx package on our server running our domain-wide Postfix service, as it is not available on CentOS 7 by default.

  1. Begin by logging in as root and typing the following command:
    yum install mailx
    
  2. The easiest way is to use mailx with its standard input mode, as follows:
    echo "this is the mail body." | mail -s "subject" [email protected]
    
  3. You can also...
CONTINUE READING
83
Tech Concepts
36
Programming languages
73
Tech Tools
Icon Unlimited access to the largest independent learning library in tech of over 8,000 expert-authored tech books and videos.
Icon Innovative learning tools, including AI book assistants, code context explainers, and text-to-speech.
Icon 50+ new titles added per month and exclusive early access to books as they are being written.
CentOS 7 Linux Server Cookbook, Second Edition
notes
bookmark Notes and Bookmarks search Search in title playlist Add to playlist font-size Font size

Change the font size

margin-width Margin width

Change margin width

day-mode Day/Sepia/Night Modes

Change background colour

Close icon Search
Country selected

Close icon Your notes and bookmarks

Confirmation

Modal Close icon
claim successful

Buy this book with your credits?

Modal Close icon
Are you sure you want to buy this book with one of your credits?
Close
YES, BUY

Submit Your Feedback

Modal Close icon
Modal Close icon
Modal Close icon