- Managing Linux Users and Groups
- Managing File Ownership and Permissions
- Lab Exercise 3.1: Managing Linux Security
- Managing the Linux Networking Configuration
- Managing Linux Applications and Services
- Lab Exercise 3.2: Installing Linux Products and Managing Processes
- Implementing and Configuring NTP
- Lab Exercise 3.3: Implementing NTP
- Summary
This chapter is from the book
This chapter is from the book
This chapter is from the book
Lab Exercise 3.2: Installing Linux Products and Managing Processes
In this exercise, you will install the Mozilla web browser on your server. Then you will practice managing Linux processes. Complete the following steps:
CAUTION
This lab assumes you have Internet access from your Linux server.
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Boot your Linux server and authenticate as your student user with a password of novell. Change to your root user account entering sux – at a shell prompt.
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Your SUSE Linux distribution comes with an older version of Mozilla, which was installed when the system was installed. You need to use a newer version in order to access Novell's NNLS web-based management utilities. To do this, you need to complete these steps:
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Select Applications, Internet, WWW, Mozilla.
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In your Mozilla window, browse to http://www.mozilla.org.
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Download the latest version of Mozilla to /tmp. You must use version 1.5 or later.
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When the download is complete, close your browser window.
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Open a terminal session.
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Change to the root user account by entering su – and supplying a password of novell.
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Change to the /tmp directory by entering cd /tmp.
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At the shell prompt, enter ls. Notice that the file you downloaded from Mozilla.org is a tarball file. For example, if you downloaded Mozilla 1.6, you will see a file named mozilla-i686-pc-linux-gnu-1.6-installer.tar.gz.
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Extract the tarball by entering tar –zxvf ./mo; then press the Tab key. Notice that the rest of the filename is automatically completed for you. The tab-complete feature of Linux makes typing long filenames much easier.
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At the shell prompt, enter ls. You should now see a new directory named mozilla-installer where the files from the archive were extracted.
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Enter cd mozilla-installer.
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Start the installation script by entering ./mozilla-installer.
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At this point, you will be presented with a graphical installation wizard that varies depending on the version of Mozilla you've downloaded. Follow the prompts presented to complete a typical installation to the /usr/local/mozilla directory.
Create an icon on your Desktop for the new version of Mozilla by completing the following steps:
Right-click anywhere on your Desktop.
Select New Launcher.
In the Name field, enter Mozilla.
In the Generic Name field, enter Mozilla.
In the Command field, enter /usr/local/mozilla/mozilla.
Select the No Icon button.
Select an icon of your choosing for the Mozilla browser icon.
Click OK.
Close any open browser windows; then test your new launcher by double-clicking the Mozilla icon on the Desktop.
The Mozilla browser should be displayed as shown in Figure 3.31.
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Figure
3.31 Mozilla running on SUSE Linux.
Install the Pure-FTP service on your server by completing the following steps:
Start YaST on your server by selecting Applications, SUSE Menu, System, YaST2.
When prompted, supply your root user's password (novell).
NOTE
When you do this, you'll notice that YaST returns a password error but runs anyway. You can safely disregard the error message.
Select Install or Remove Software.
In the Filter drop-down list, select Package Groups.
Select zzz All.
In the top-right frame, scroll down to and select pure-ftpd.
Click Accept.
When prompted, insert UnitedLinux 1.0 CD #2 and then click OK.
Wait while the package is installed.
When the installation is complete, click Close.
Follow these steps to manage the pure-ftpd service on your server:
Open a terminal session and change to your root user account by entering su – and supplying a password of novell.
At the shell prompt, enter cd /etc/init.d.
Enter ls. You should see a script for the pure-ftpd daemon, as shown in Figure 3.32.
Check to see the runlevels pure-ftpd is configured to automatically start at by entering chkconfig –l pure-ftpd at the shell prompt.
You should see that pure-ftpd is not configured to automatically start at any runlevel. Start the pure-ftpd service by entering ./pure-ftpd start.
Configure pure-ftpd to automatically start at runlevels 3 and 5 by entering chkconfig pure-ftpd 35.
Verify this change by entering chkconfig –l pure-ftpd.
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Figure
3.32 The pure-ftpd script.
Now you can practice managing Linux processes by completing the following steps:
At your shell prompt, enter top.
Sort the display by CPU usage by entering P.
Which process is using the most CPU cycles on your system?
Open a new terminal session.
Change to the root user with the su – command.
Kill the top process by entering killall top. Notice that the top process in the first terminal session is terminated, as shown in Figure 3.33.
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Figure
3.33 Killing the top process.