Login Script for deleting contents of /private/var/folders We have fleets of laptops that have limited space once our software is installed on it. What ever the issue that is causing the creation of theses files and --err not flushing them, we are ignoring for the moment. But I would like to automatically delete the contents /private/var/folders/. We have maybe 5-10 students log in to a laptop a day. Not sure if that will be an overkill. Any help would be appreciated.
It's a simple way. You can use the getconf DARWIN_USER_CACHE_DIR command to get the per-user temporary files and caches directory. and remove it. edit the '/etc/profile' file, add the following codes in it(not test yet): 

userTempDir=`/usr/bin/getconf DARWIN_USER_CACHE_DIR`
rm -fr $userTempDir*