How to clear the command line in Octave?

to clear the command window type:

clc

There are several clearing shortcuts defined:

• Meta-D: clear the next word¹
• Ctrl-K: clear to the end of the line
• Ctrl-U: clear the whole line
• Ctrl-L: clear the line and the screen

See more examples in the octave command-line-editing section of the manual.

For historical reasons Ctrl-U is usually controlled by your terminal rather than octave, although octave also supports it. You can test this with stty kill undef (restore with stty kill '^U').

_{¹Meta is often bound to the Win key or the Alt key. If not hit the Esc key first and then the character that needs to be "metaified".}