Add path to the top of MATLAB search paths for current MATLAB session only –
addpath(PATHNAME)
Same as addpath, but stays good for next sessions –
savepath(PATHNAME)
Add all subdirectories for current MATLAB session only –
addpath(genpath(PATHNAME))
Note: One must be careful while adding paths because if there are multiple function files with the same name, the one that is higher up on the path string, is chosen.