Basic Scripts to find Version: ORACLE/UNIX

Some common basic scripts to find version:

Version of Unix Operating System
Red Hat Linux -> cat /etc/redhat-release

To find database version:
SQL> select * from v$version;

Find the URL for the application:
Login as apps:SQL> select home_url from icx_parameters;

To find Apps Version:
SQL> select release_name from apps.fnd_product_groups;

Web Server/Apache or Application Server in Apps R12
Log in as Application user: run below query
$IAS_ORACLE_HOME/Apache/Apache/bin/httpd -version

Oracle Java Plug-in in R12/12iLog in as Application user:
Query:$ grep plugin $CONTEXT_FILE

File Version on file system strings grep Header
$strings -a grep -i '$Header'
## to find reports version ###
adident $Header

Discoverer Version for 11i Log in as Application user, set environment variable and run below query$ORACLE_HOME/bin/disc4ws grep -i Version