How to check the existence of the specified file in MatLab? - exist -- MatLab

How to check the existence of the specified file in MatLab? 

[Ans]

exist

[syntax]

<result>=exist(<name>);

<result>=exist(<name>,<searchType>);

[description]

<result>=exist(<name>);

exist name returns the type of name as a number.

• 0 — name does not exist or cannot be found for other reasons. For example, if name exists in a restricted folder to which MATLAB® does not have access, exist returns 0.

• 1 — name is a variable in the workspace.

• 2 — name is a file with extension .m, .mlx, or .mlapp, or name is the name of a file with a non-registered file extension (.mat, .fig, .txt).

• 3 — name is a MEX-file on your MATLAB search path.

• 4 — name is a loaded Simulink® model or a Simulink model or library file on your MATLAB search path.

• 5 — name is a built-in MATLAB function. This does not include classes.

• 6 — name is a P-code file on your MATLAB search path.

• 7 — name is a folder.

• 8 — name is a class. (exist returns 0 for Java classes if you start MATLAB with the -nojvm option.)

<result>=exist(<name>,<searchType>);

It will return true when <name> is kind of  <searchType>.

Otherwise, return false.

more details on:

Check existence of variable, script, function, folder, or class - MATLAB exist (mathworks.com)