matlab whos

`whos` is a command in MATLAB that displays information about the variables currently in the workspace, including their size, data type, and memory usage.

For example, if the workspace contains three variables named `x`, `y`, and `z`, you can use the `whos` command to display information about them as follows:

>> whos
  Name      Size            Bytes  Class     Attributes

  x         1x10               80  double              
  y         3x3x2             144  double              
  z         100x100           80000  uint8               

This output shows that `x` is a row vector with 10 elements of type `double`, `y` is a 3D array with dimensions 3x3x2 and type `double`, and `z` is a 2D array with dimensions 100x100 and type `uint8`. It also shows the memory usage of each variable in bytes.