How to properly set the environment for user oracle under Linux

Hi,
Every time I install XE on Linux somewhere, I repeat these steps (along with [fixing the /etc/init.d/oracle-xe startup script|http://forums.oracle.com/forums/thread.jspa?threadID=843780&tstart=0]), so I thought, why not contribute this to the community.
Those who have installed XE on Linux know that, after installation, logging in as user oracle gets you in a
$cryptic prompt. On top of that, none of the essential environment variables are set. Not amusing. That's because the oracle user lacks the proper configuration files for the bash prompt. Log in as user oracle and create these:
.bashrc
if [ -f /etc/bashrc ]; then
. /etc/bashrc
fi.bash_profile
if [ -f ~/.bashrc ]; then
. ~/.bashrc
fi
. /usr/lib/oracle/xe/app/oracle/product/10.2.0/server/bin/oracle_env.sh
unset USERNAME.bash_logout
clearNow log out and then log in again - a nicer prompt, and all environment variables are set, ready to run sqlplus, imp, etc.
This should help make your overall XE experience on Linux easier. Regards,
Georger

Nice. I checked the .bash_profile of my oracle installation and this is what I can contribute (I got the additional stuff from some tests with other Oracle Versions):
# /etc/skel/.bash_profile
# This file is sourced by bash for login shells. The following line
# runs your .bashrc and is recommended by the bash info pages.
[[ -f ~/.bashrc ]] && . ~/.bashrc
# Oracle Profile Settings
if [ $USER = "oracle" ]; then
   source /usr/lib/oracle/xe/app/oracle/product/10.2.0/server/bin/oracle_env.sh
   if [ $SHELL = "/bin/ksh" ]; then
      ulimit -p 16384
      ulimit -n 65536
   else
      ulimit -u 16384 -n 65536
   fi
fiC.

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