I was working on configuring HBase to run on my Mac OS X machine, and I ran into a hiccup setting up the JAVA_HOME environment variable. Eventually, I determined that there’s a “Home” directory inside of each Java Framework. So, the full command is is:
export JAVA_HOME=/System/Library/Frameworks/JavaVM.framework/Versions/1.6.0/Home
I’ve had this list scribbled on the back of a receipt for months, and thought I should commit it somewhere more permanent. Hopefully it’s of use to someone out there!
The basics
Sustenance
If Camping
At work, we use svn as a code repository and svnmerge for branch management. A coworker who recently switched to Mac asked me how he could assign a global variable so that he could run the svnmerge command without specifying the full path to the python script. The solution was to add an alias to svnmerge that is loaded on shell startup. Since Mac OS X uses the bash shell, he needed to add the following to his .profile file (the .profile file sits in the home directory and can be created if it doesn’t yet exist):
alias svnmerge='/path/to/svnmerge.py'
The svnmerge.py file also needs to be executable (chmod a+x svnmerge.py). The changes will take effect the next time you open a new shell.
While I’m at it, it’s worth mentioning another useful option that I have in my .profile file. By adding export CLICOLOR=1, the ls command will output in color to distinguish between directories, files, and executables.
Edit: I may have jumped the gun. After a few more days of use, it seems like the Globetrotter Connect software is no more buggy than it was before the 10.5.7 update. The multiple kernel panics must have been a coincidence.
Warning! I installed the Mac OS X 10.5.7 update this past weekend, and I’ve had a lot of problems today with the Globetrotter Connect software. It has caused 2 kernel panics in under an hour of use 
. If you use this software, I’d strongly suggest waiting for a new version before upgrading to Mac OS X 10.5.7.
In a few days, I’ll give an update on if the KPs continue, or if it’s a transient error.
Here’s the lovely KP back trace that I’ve seen a numer of times:
Mon Jun 8 08:48:18 2009
panic(cpu 1 caller 0x003A04EC): "m_free: freeing an already freed mbuf"@/SourceCache/xnu/xnu-1228.12.14/bsd/kern/uipc_mbuf.c:3574
Backtrace (CPU 1), Frame : Return Address (4 potential args on stack)
0x3b13b7f8 : 0x12b4c6 (0x45ec20 0x3b13b82c 0x13355c 0x0)
0x3b13b848 : 0x3a04ec (0x498e5c 0x467ae00 0x3b13b878 0x3f0864)
0x3b13b8c8 : 0x34a2bff2 (0x3072c200 0x3072c200 0x0 0x5a95fb)
0x3b13b8f8 : 0x5a21cb (0x5cb3c00 0x0 0xe00002eb 0x3e)
0x3b13b968 : 0x811489 (0x43c6000 0x4679500 0xe0004050 0x3e)
0x3b13b9d8 : 0x80f17e (0x43c6000 0x4671d00 0xe0004050 0x4673c00)
0x3b13ba38 : 0x80f1f1 (0x43c6000 0x2 0x3 0x0)
0x3b13ba68 : 0x4268e5 (0x43c6000 0x2 0x3 0x0)
0x3b13bab8 : 0x5a2472 (0x464d4c0 0x59e99a 0x2 0x3)
0x3b13bae8 : 0x5a6d08 (0x43c6000 0x2 0x4991ccc 0x4996d40)
0x3b13bb08 : 0x34a2bb6b (0x4991cc0 0x49eef0c 0x3b13bb38 0x5cb3c00)
0x3b13bb28 : 0x34a2bdec (0x5cb3c00 0x0 0x0 0x0)
0x3b13bb58 : 0x5e605e (0x5cb3c00 0x5e84800 0x5809e20 0x0)
0x3b13bb88 : 0x5e5e88 (0x5cb3c00 0x2 0x5e84800 0x0)
0x3b13bbc8 : 0x4268e5 (0x5cb3c00 0x3b13bc40 0x0 0x0)
0x3b13bc18 : 0x5e5f04 (0x498dd80 0x5e5e46 0x3b13bc40 0x0)
Backtrace continues...
Kernel loadable modules in backtrace (with dependencies):
com.option.driver.OptionQC(1.1.18)@0x34a26000->0x34a30fff
dependency: com.apple.iokit.IOSerialFamily(9.4)@0x69e000
dependency: com.apple.iokit.IONetworkingFamily(1.6.1)@0x5de000
dependency: com.apple.iokit.IOUSBFamily(3.4.3)@0x59d000
com.apple.driver.AppleUSBUHCI(3.3.5)@0x80b000->0x818fff
dependency: com.apple.iokit.IOPCIFamily(2.6)@0x5cd000
dependency: com.apple.iokit.IOUSBFamily(3.4.3)@0x59d000
com.apple.iokit.IOUSBFamily(3.4.3)@0x59d000->0x5c5fff
com.apple.iokit.IONetworkingFamily(1.6.1)@0x5de000->0x5f3fff
BSD process name corresponding to current thread: kernel_task
Mac OS version:
9J61
After 35 years, my dad is retiring in June. He’s spent all of those years at Cumberland Valley School District playing the role of teacher, coach, and administrator. To celebrate his contributions, the Eagle Foundation is presenting my dad with the first-ever “Commitment to Excellence Award” this Friday. The Carlisle Sentinel has an excellent article about my dad and the award.
Just to show how much he has meant to CV family over the past 35 years as a teacher, coach, assistant principal, director of curriculum and instruction, as well as director of elementary education, the Eagle Foundation has decided to honor him as the inaugural recipient of the Commitment to Excellence Award at its 11th annual recognition dinner.
Set for next Friday at the West Shore Country Club, Crobak will headline a list of 13 individuals for their service and leadership to the district.
Full Article: District Honors Retiring “Crow”
I really wish that I could go to the award ceremony, but I just started a new job and can’t get to Mechanicsburg on time.