On: Cool, but obscure Unix tools

[IvarTJ]

You don’t need stdio.h to use puts.

I was in the process of making something similar before I found what I wanted – rlwrap. It provides readline line editing capabilities to command line applications that don’t support them, such as netcat.

[pyre → IvarTJ]

Or, more importantly, sqlplus (for those of us that need to work with Oracle).

[SourPatch → pyre]

For that I use gqlplus.

http://gqlplus.sourceforge.net/