Telnet is a very old communication protocol, it is not secure because the password authentication is transmitted in clear text. SSH is a secure protocol and is the replacement for telnet. Red Hat recommends that you use SSH to connect…
Month: May 2009
How to create a new logical volume in Red Hat Enterprise 5 Linux.
(1) Click on System – Administration – Logical Volume Manager. (2) Expand Uninitilized Entities on the left window by clicking on the arrow next to it. You will now see the available physical disk partitions if there is any. For…
How to change the shell in Linux or Unix.
Linux and Unix have a vairety of shells. A shell is a program that provides the text interface, it reads the interactive or non interactive commands, interprets and executes the instructions. Depending on your version of Linux or Unix, a…
Errors regarding libXp.so.6 in linux
I received errors regarding libXp.so.6 launching the Fame 9.3 release 3 on Redhat Enterprise Linux 5. Error while loading shared library libXp.so.6 Cannot open shared object file. No such file or directory. This error occurs because the library libXp.so.6 is…
TOP and TOPAZ are Unix, Linux and AIX utilities that provides real time display of top cpu using processes.
As a server/systems administrator you will find the TOP utility very useful to determine top cpu using processes. TOP is the utility for Linux and most Unix operating systems. IBM Aix has it’s own version which does the same job,…
How to remove the Windows Genuine Advantage Notification.
I ran the windows update on my XP computer, it downloaded and installed KB905474. This instaled the Windows Genuine Advantage Notification on my Windows XP computer. Now eveyrtime after I reboot my computer the warning message keeps popping up in…
Determine the disk usage of a file system in Linux or Unix.
As a server administrator you will find that the df commad is very useful to find out the disk usage of a file system in Unix or Linux. Depending on the variant of Linux or Unix, the df command also…
How to determine the folder size in Unix or Linux.
The du command displays disk usage for each file or folder. You can use this command to find the size of a folder in Unix or Linux. Below are some examples. du -s /home/andrew 19112204 /home/andrew The above command displays…
How to determine the current shell type in Linux or Unix.
Here is the command to find out what your current shell type is in Linux or Unix. This works for most variants of Unix, Aix, and Linux. echo $0, this will display the shell type. echo $SHELL, this will give…
Upgrading SpamAssassin on Fedora 4 server.
Download the lastet version of SpamAssassin version 3.2.5, the file name is Mail-SpamAssassin-3.2.5.tar.gz. You can get the latest version from spamassassin.apache.org. In this step by step example I am upgrading SpamAssassin version 3.0.3-4.fc4 to 3.2.5 on my Fedora 4 server.…