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Showing posts from November, 2013

non-credit photography class

this fall, i signed up for a photography class through ut. this class has been long overdue for me. even though i’ve had my dslr since 2008, there were many things i needed to and did learn from this course.

the course is six weeks of evening classes and two field trips. several of the things i learned included:


the whole stop points for both aperture and shutter speed adjustments
how to shoot with shallow depth of field
what to look for when buying a flash and a tripod
setting a custom white balance, how to use accessories like extension tubes
the concepts of composition
the timing of the class was perfect too. fall colors were in full effect for our second field trip.



i’ve been practicing the techniques taught for photographing family events. i believe i’m going to be carrying my camera around more to social gatherings.



i would recommend this class for anyone who has recently purchased their first dslr. it would be great to start with practicing good habits from the start. there are so m…

disabling suspend/hibernate/shutdown for all users but root

my situation:

we have a screen along with a keyboard and mouse in a scrum room at work. the computer is in a locked rack closet on the other end of the floor. i do not have direct access to this room. this computer serves as a portal for internet access and conference calling. i installed fedora linux on the system.

because of the remoteness about it, the keyboard was one that had a power button on it. occasionally, it would get bumped and shutdown the system. this meant we had to find someone to unlock the door to physically power the computer back up. we were successful in disabling the power button on the keyboard, but we still had a problem with being able to shutdown the machine from the gnome interface.

my solution:

i probed in #fedora on freenode and was pointed to using a policykit policy to limit suspend/hibernate/shutdown access to root only. the first link i found was this one:

http://superuser.com/questions/453002/how-to-achieve-users-are-no-longer-allowed-to-shutdown-the-co…