There is no undo in the command line. You can however, run commands as rm -i and mv -i .

How do I undo an action in Linux?

Type u to undo the last change. To undo the two last changes, you would type 2u . Press Ctrl-r to redo changes which were undone.

How do I undo a previous command?

To reverse your last action, press CTRL+Z. You can reverse more than one action. To reverse your last Undo, press CTRL+Y.