OS X home directory

When writing my script I use “startup disk” in order to cover any machine the script might be running on . In OS X the app I installed puts files in the administrators home directory. Therefore what name can I use to cover the different names of folks home directories? This will be run on several different macs running OS X, with the home directory being different for every mac. (i.e… /Users/Library/lt5/Apps, /Users/Library/mdc/Apps)