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)
and call sqlplus with "rlwrap sqlplus" or rman with "rlwrap rman".
Nothing more to make it run? No, nothing more!