The Nexenta Management Console (NMC) is a tightly focused – and restrictive – command-line interface. If you need access to a shell, launch one from within NMC as follows:
nmc@nexenta01:/$ option expert_mode=1 -s
nmc@nexenta01:/$ !bash
You are about to enter the Unix (“raw”) shell and execute low-level Unix command(s). Warning: using low-level Unix commands is not recommended! [...]