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CompTIA Linux+ Certification Guide

You're reading from   CompTIA Linux+ Certification Guide A comprehensive guide to achieving LX0-103 and LX0-104 certifications with mock exams

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Product type Paperback
Published in Sep 2018
Publisher
ISBN-13 9781789344493
Length 590 pages
Edition 1st Edition
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Author (1):
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Philip Inshanally Philip Inshanally
Author Profile Icon Philip Inshanally
Philip Inshanally
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Table of Contents (23) Chapters Close

Preface 1. Configuring the Hardware Settings FREE CHAPTER 2. Booting the System 3. Changing Runlevels and Boot Targets 4. Designing a Hard Disk Layout 5. Installing a Linux Distribution 6. Using Debian Package Management 7. Using YUM Package Management 8. Performing File Management 9. Creating, Monitoring, Killing, and Restarting Processes 10. Modifying Process Execution 11. Display Managers 12. Managing User and Group Accounts 13. Automating Tasks 14. Maintaining System Time and Logging 15. Fundamentals of Internet Protocol 16. Network Configuration and Troubleshooting 17. Performing Administrative Security Tasks 18. Shell Scripting and SQL Data Management 19. Mock Exam - 1 20. Mock Exam - 2 21. Assessment 22. Other Books You May Enjoy

Managing user accounts

So far, we've used two user accounts throughout the previous chapters; a standard user and the root user. In Linux, we can create a user account via a GUI utility or via the command line. In the shell, we use the useradd command in order to create a new user account. In newer distributions, there is also the adduser command. In some distributions, such as CentOS, adduser is a symbolic link. This can be seen here:

[root@localhost philip]# ll /usr/sbin/adduser
lrwxrwxrwx. 1 root root 7 Jun 20 09:19 /usr/sbin/adduser -> useradd
[root@localhost philip]#

On Ubuntu, the adduser command is separate from the useradd command:

root@ubuntu:/home/philip# ll /usr/sbin/adduser
-rwxr-xr-x 1 root root 37276 Jul 2 2015 /usr/sbin/adduser*
root@ubuntu:/home/philip#

The basic syntax when using the useradd command is useradd <option> username. By default, a standard...

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