Important variables in eBusiness Suite in R12.2

Important new variable in R12.2
$FILE_EDITION	shows which file edition you are using, run or patch
$RUN_BASE	shows absolute path to run file system
$PATCH_BASE	shows absolute path to patch file system
$NE_BASE	shows absolute path to non-edition file system
$APPL_TOP_NE	non-editioned appl_top path. Equivalent to $NE_BASE/EBSapps/appl
$LOG_HOME	Application Instance Specific Log Directory
$ADOP_LOG_HOME	Online patching Specific Log Directory. Equivalent to $NE_BASE/EBSapps/log/adop
$IAS_ORACLE_HOME	FMW Web Tier Home Directory
$ORACLE_HOME	10.1.2 ORACLE_HOME
$CONTEXT_FILE	Source for information populating template files (autoconfig)
$EBS_DOMAIN_HOME	WLS Deployment of Oracle E-Business Suite 12.2 Domain (instance specific
$ADMIN_SCRIPTS_HOME	Shell scripts to control processes associated to the Applications Instance
$EBS_ORACLE_HOME	Oracle E-Business Suite 12.2 FMW Deployment directory
$RW	10.1.2 reports directory
$APPS_VERSION	to get the EBS version