enable bash history in Gaia and SPLAT

by default, bash history is on but commands run are not save to the .bash_history file to be accessed upon you next login.

[Expert@ckkpmgr]# set -o | grep history
history         on
[Expert@ckkpmgr]# echo $HISTFILESIZE
0

to enable it globally for all users

[Expert@myfirewall]# sed -i -e 's/HISTFILESIZE=0/HISTFILESIZE=1000/' /etc/bashrc; source /etc/bashrc

verify it worked

[Expert@ckkpmgr]# echo $HISTFILESIZE
1000

bash command history is saved upon logout