17
Sep
Setting Current JDK programmatically on Mac
A few days back I was looking for a way to change the CurrentJDK symbolic link on my Mac. I had found this nice script somewhere (don't quite remember where). But is is very useful.
#!/bin/sh
cd /System/Library/Frameworks/JavaVM.framework/Versions
CURJDK="`readlink CurrentJDK`"
echo Current JDK version: $CURJDK
if [ "$1" == "" ]; then
echo Installed versions:
ls
exit
fi
VERFOUND=`ls | grep $1 | head -n 1`
if [ "$VERFOUND" != "$1" ]; then
BASE="`basename $0`"
echo Error: Could not change JDK-- version $1 not installed!
echo Run $BASE without arguments to see a list of installed versions.
exit 127
fi
echo You must now enter your Mac OS X password to change the JDK.
sudo ln -fhsv $1 CurrentJDK
Save it as a file name of your choice. I saved it as "SetJDK.sh". Give it execute permissions, and run the script.
I have that same script, not sure where I got it too, but it works great.
Can I ask how you run it? I have to open the file in pico, then to copy and paste it in the terminal, and then run it. I would be easier to just run it.
I am a newbie at this, but do you just add the ".sh" to it?
Thanks,
John
September 17, 2007 6:12 PM
Hi John.
To run it, go to the directory where you've saved it, and then put a period and forward slash, followed by the name of the script.
So in my case to run it I'd do ./SetJDK.sh
And oh, make sure you have permissions to execute the script as well.
September 19, 2007 10:43 PM
I had the file named SetJDK and re named it to SetJDK.sh,and I moved into my home directory,a nd apply the "./SeJDK.sh" and this works, thank you so much. I know see to run the script I use the "./" this is great`-`
Thanks again
John
September 22, 2007 3:55 PM