Postinstall script for payload-free package which fixes the Users folder being hidden when iTunes 11.2 is installed and Find My Mac is enabled.

gistfile1.sh

#!/bin/bash

# Detects if /Users is present
# If /Users is present, the 
# chflags command will unhide it

if [[ -d "$3/Users" ]]; then
   chflags nohidden "$3/Users"
fi

# Detects if /Users/Shared is present
# If /Users/Shared is present, the
# chflags command will unhide it

if [[ -d "$3/Users/Shared" ]]; then
   chflags nohidden "$3/Users/Shared"
fi

# Runs a permissions repair to fix     
# the world-writable permission on 
# /Users

diskutil repairPermissions "$3"

exit 0