is there any way to list the variables used in the particular .m file?

as for list folder and directories we use ls. There is any command for variables list in a paricular program.

Answer 1

[Star Strider]

If the file is open and has been run at least once, the whos function will list all the variables in the script’s workspace.

Answer 2

[Stephen23]

You can use whos to list variables in a workspace, after a script or function has run. Just keep in mind the difference between scripts and functions:

• scripts share the base workspace, so it is not possible to know which script or command-line operation has created or changed any variable.
• functions each have their own workspace.

Also note that:

• using clear removes variables from a workspace
• assing assignin and eval can make variables appear in other workspaces, without any indication of this in their own script?function code. This is one reason why it is a bad idea to use these commands.