Increase or decrease number of telnet session on Linux/Fedora

Edit the file /etc/xinetd.conf.
Change the parameter "instances" to a suitable value you need.
Save the file.
Restart xinetd service. [Command: service xinetd restart]

Optimizing MySQL Performance With MySQLTuner

MySQLTuner is a high-performance perl tuning script that will provide you with a report of a MySQL server’s health. Based on the statistics gathered, MySQLTuner will provide specific recommendations that will increase a MySQL server’s efficiency and performance. The script gives you automated MySQL tuning that is expected on the level of what you would receive from a MySQL DBA.

Installation:
Download perl script --->> wget http://mysqltuner.com/mysqltuner.pl
Change file permission --->> chmod +x mysqltuner.pl
Run --->> ./mysqltuner.pl


Install the Flash Plugin with Firefox on IBM XSeries X86_64

Follow the instruction from http://www.linuxheadquarters.com/howto/64-bit/flash64.shtml to download, install & enable flash plugin.