MATLAB^®

what - List MATLAB files in current directory

Graphical Interface

As an alternative to the what function, use the Current Directory browser.

Syntax

what what dirname what classname what packagename s = what('dirname')

Description

what lists the path for the current working directory, and all files and directories related to MATLAB found in the working directory. Files listed are M, MAT, MEX, MDL, and P-files. Directories listed are all class and package directories.

what dirname lists path, file, and directory information for directory dirname. If this directory is on the MATLAB search path, it is not necessary to enter the full path to dirname. The last one or two components of the path are sufficient.

what classname lists path, file, and directory information for method directory @classname. For example, what cfit lists the MATLAB files and directories in toolbox/curvefit/curvefit/@cfit.

what packagename lists path, file, and directory information for package directory +packagename. For example, what commsrc lists the MATLAB files and directories in toolbox/comm/comm/+commsrc.

s = what('dirname') returns the results in a structure array with the fields shown in the following table.

Field	Description
`path`	Path to directory
`m`	Cell array of M-file names
`mat`	Cell array of MAT-file names
`mex`	Cell array of MEX-file names
`mdl`	Cell array of MDL-file names
`p`	Cell array of P-file names
`classes`	Cell array of class directories
`packages`	Cell array of package directories

Examples

List MATLAB Files in a Directory

List the files in toolbox/matlab/audiovideo:

what audiovideo

M-files in directory matlabroot\toolbox\matlab\audiovideo

Contents            avifinfo            sound
audiodevinfo        aviinfo             soundsc
audioplayerreg      aviread             wavfinfo
audiorecorderreg    lin2mu              wavplay
audiouniquename     mmcompinfo          wavread
aufinfo             mmfileinfo          wavrecord
auread              movie2avi           wavwrite
auwrite             mu2lin
avgate              prefspanel

MAT-files in directory matlabroot\toolbox\matlab\audiovideo

chirp         handel        splat
gong          laughter      train

MEX-files in directory matlabroot\toolbox\matlab\audiovideo

winaudioplayer
winaudiorecorder

Classes in directory matlabroot\toolbox\matlab\audiovideo

audioplayer    avifile
audiorecorder  mmreader

Return File Names to Structure

Obtain a structure array containing the MATLAB file names in toolbox/matlab/general:

s = what('general')
s = 
       path: 'matlabroot:\toolbox\matlab\general'
          m: {89x1 cell}
        mat: {0x1 cell}
        mex: {2x1 cell}
        mdl: {0x1 cell}
          p: {'callgraphviz.p'}
    classes: {'char'}
   packages: {0x1 cell}

List M-Files in a Package

Find the supporting M-files for one of the packages in the Communications Toolbox product:

p1 = what('comm');
p1.packages
ans = 
    'commdevice'
    'crc'
    'commsrc'

p2 = what('commsrc');
p2.m
ans = 
    'abstractJitter.m'
    'abstractPulse.m'
    'combinedjitter.m'
    'diracjitter.m'
    'periodicjitter.m'
    'randomjitter.m'