CLI context commands

This topic describes context commands for the Delphix Engine command-line interface.

Command	Description
`back`	Return to the previous visited valid context. This history only tracks contexts that were actually visited, so running `database` “example” followed by back will return you to the root context, not the database (because the two were executed as part of one action and never actually visited). If a previous context was deleted or is no longer valid, this command will skip over it.
`cd`	Switch to the given child. This is identical to typing the name of the child itself, but also support UNIX-style directory structures, such as “/” and “..”. This allows for contexts to be chained such as `cd ../database/template`.
`history`	Display the history of input to the shell. The shell supports the ability to move back and forth in the history using the up and down arrows.
`up`	This is an alias for `cd ..` for the benefit of those less familiar with UNIX filesystem navigation. Unlike back, which only returns to the previous context only if it was visited, and may return to a child context, this command will always return to the immediate parent context.