Beginning Ubuntu LTS Server Administration: From Novice to Professional (Expert's Voice in Linux)
Sander van Vugt
Language: English
Pages: 424
ISBN: 1430210826
Format: PDF / Kindle (mobi) / ePub
Beginning Ubuntu LTS Server Administration, Second Edition is the touchstone companion book for anyone implementing Ubuntu LTS Server. Author Sander van Vugt introduces the most recent server edition of Ubuntu Linux, the most popular Linux distribution, to power users, system administrators, and programmers and demonstrates the power and flexibility that the Hardy–Heron Ubuntu Server Long Term Support Edition offers for small networks and corporate systems alike.
This book covers:
- Installing and configuring Ubuntu to ensure secure installations
- Virtual Ubuntu
- Full network and web services management
installation program and install them. This installation program will normally be included in the archive. The best way to find it is to look at the names of the files you’ve just extracted. In many cases, you will see files with a name such as setup or install, and if you don’t see anything that looks like an installation program, see if there is a file with the name readme that contains a clue about how to install your software. If the tarball contains source files, you first have to compile
change his password after he logs in for the first time. To perform these tasks, the passwd command has the following options: • -l: Enables an administrator to lock an account (for example, passwd -l jeroen locks the account for user jeroen) • -u: Unlocks a previously locked account • -S: Reports the status of the password for a given account • -e: Forces the user to change his or her password upon next login Managing Password Expiration Although not many people are aware of this feature, it
just have read permission. The next important pieces of data in the preceding line are the names linda and users; they refer to user linda (who is owner) and the group users (which is group owner). Note that in the basic Linux permission scheme, just one user and just one group can be assigned as owner of a file. If you want more, you need to use ACLs. With regards to Linux rights, ownership is the only thing that really matters. An example shows why this is important; imagine the home directory
version of Ubuntu.) In this book, I’m working with Ubuntu Server 8.04 LTS. The letters LTS stand for Long Term Support, which means that this version of Ubuntu Server will have five years of support. That makes it a perfect server operating system to run in an enterprise environment, in which support is of the highest importance. 1 2 CHAPTER 1 ■ INSTALLING UBUNTU SERVER Are you looking for the latest that Ubuntu Server has to offer? You can download the latest version of Ubuntu Server from
(renicing) may be an option. To understand what the commands nice and renice are doing, we first need to have a look at how the process scheduler works. Every system uses a process queue. All processes sit in this queue to wait for some CPU cycles. So, if three processes are named A, B, and C, they will each get an equal number of CPU cycles. If a process still needs more cycles after the process has been handled, it reenters the queue. Because it was the last process that was handled, it rejoins