I am using sqlplus and rman on linux a lot, and one very annoying thing is that there is no history (key-up) as it is on windows. Reason is that in sqlplus/rman is running in a dosbox and the dosbox has the "key-up-history" feature implemented automatically.
But also in Linux it's easy to achieve. The tool you need is "rlwrap". Just install it (example for Debian)
apt-get install rlwrap
and call sqlplus with "rlwrap sqlplus" or rman with "rlwrap rman".
Nothing more to make it run? No, nothing more!
Have fun!