:MMEMory:CATalog[:USER]?
This command reads the following information about the D drive in the E4982A.
Capacity used
Free (available) capacity
Names and sizes of files
{used_size},{free_size},{name 1},{type 1},{size 1},...,{name N},{type N},{size N}<newline><^END>
N is the number of all files contained in the built-in storage.
{used_size}: Already used capacity (bytes) of built-in storage
{free_size}:Free capacity (bytes) of built-in storage
{name n}:Name of the nth file (Character string enclosed within double quotation marks (""))
{type n}:A pair of double quotation marks ("") are always read.
{size n}:Size (bytes) of the nth file
With n defined as integer 1 to N, N sets of {name n}, {type n}, and {size n} are read.
No equivalent key is available on the front panel.