Rick Baker's Personal Website

So my anniversary is coming up, and for the past month I’ve been considering asking the wife for an iPhone, but I’m a bit torn.  If I buy now I’m pretty much locked into the hardware that it comes with.  Software upgrades will come no matter when I buy, but I’m just not sure if I should wait for the next generation.

I don’t have an iPod, my cell phone won’t hold a charge, and when I’m out it would definitely be useful to be able to get on the web or check email.  But does that justify buying an iPhone.  Just can’t decide.

Working on our hosting webserver the other day and came across an issue that took me a while to figure out.  When trying to restart apache I was getting “No space left on device”, yet we had plenty of hard drive space.  It turns out that we actually had no semaphores available.  Using the following little script run from bash cleared it up.

ipcs -s|awk '{print ipcrm sem  }' > SCRIPT
ipcs -s -t | cut -f 1 -d " " | egrep "^[0-9]+$" | xargs ipcrm sem

I routinely work on small linux boxes that basically run off of a small flashcard as the hard drive. We use these for out client-side network monitoring boxes. The problem with these is they can very quickly run out of drive space, if there is anything being written to the drive at all.

Here’s a very useful command that can be ran from the command line. This will give you a list, starting from your current directory, of files and their modification dates in descending order. So anything recently modified will be at the bottom of the list. Comes in quite handy.

find . -type f -printf '%TY-%Tm-%Td %TT %p\n' | sort