howto: install jpgraph on fedora linux

today, i needed to install jpgraph on the mantis server. i had enabled the graphical plugin but it needed jpgraph to get the fonts working properly and to draw the charts.

so, i am documenting this for anyone out there who has the same need

the steps are 

download the package from jpgraph

next  uncompress the package. if you had downloaded the bz2 file the parameters are


the year of the linux desktop

its february 25th, 2010. i am writing this little opinion piece as a response to all those other opinion pieces that say _THIS_ year is the year of the linux deskop. yes, it is a common theme for writers every new year. its sort of like, back in school, every new school year, our english teacher would ask us to write an essay on what we did during our summer holidays.

howto: fix "X11 connection rejected because of wrong authentication."

recently i had an issue whereby i had previously logged into a machine and ran an app but after a reboot the app wouldn't work again. it kept giving me the following error message:

X11 connection rejected because of wrong authentication.

so i did some research and came up with this site. 


Remi Collet has a repo. this is a different kind of repo as remi is an official packager for fedora and his repo has his test packages that eventually gets into fedora's official repo when they get approved. so he has test packages for php, firefox, mysql among others. this repo is also unique coz its the only repo i found that has tora and mysql-workbench

so when using this repo, the user has 2 choices:

howto: disabling NetworkManager

when a default installation of fedora is complete, the user will discover that an assumption was made: the user wants to use NetworkManager to manage his network settings.

of course, this isnt necessarily true. so how to go about fixing it?

well, you first set up your network via


when that opens up, set your static (or dhcp) ip by clicking on the interface you wish to configure then click on the "edit" button. 

disable the "controlled by NetworkManager" checkbox and

howto: loading and unloading linux kernel modules

hokay dokay. i have been given a sony vaio z720d (which doesnt suck any more) by my corporate overlords. i have begun using it extensively for virtualisation via kvm. but recently its begun to act weird.

on booting up my kvm guests, i sometimes find the guest to be slow. running this command

howto: local media repo

recently, i had to install some software from the install media coz the machine i was on had no access to the internet. after one attempt at trying to find all the dependencies and installing all the packages via rpm, i dediced to find out how to use the install repo after install.

what i came up with was this:

howto: configure hp laserjet P1005 on fedora 12

i bought myself a brand new sparkling hp laserjet p1005 today. i was seriously happy when i ran system-config-printer right after i plugged it in and found it listed. but then it wouldnt print.

/var/log/cups/error_log stated  printer-state-reasons=hplip.plugin-error,paused . which meant the printer wasnt working. so i did some research on google and almost all of the results were ubuntu and if i filtered out ubuntu in favour of fedora the results was null.

howto: install tora on fedora 12

tora is the "Toolkit for Oracle" and was originally written by the developer of Toad. it is now very much a community driven software project. installing it is no longer the challenge it used to be. Tora is backward compatible from Oracle 11g to oracle 9 due to using the oracle instant client for 11g

i am writing up this article for 2 reasons


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