23.9 .ios

A list of open IO spaces, and their corresponding identifiers and names, can be obtained using the .info ios command. You can use the .ios command to switch back to a particular IO space by providing an expression that evaluates to its identifier:

(poke) .ios 1
The current IOS is now `foo.o'.
(poke) .ios $</bin/ls>
The current IOS is now `/bin/ls'.