dir

Display directory listing

Syntax

• dir
  dir name
  files = dir('name')
  

Description

dir lists the files in the current working directory.

dir name lists the specified files. The name argument can be a pathname, filename, or can include both. You can use absolute and relative pathnames and wildcards (*).

files = dir('directory') returns the list of files in the specified directory (or the current directory, if dirname is not specified) to an m-by-1 structure with the fields

name	Filename
date	Modification date
bytes	Number of bytes allocated to the file
isdir	1 if name is a directory; 0 if not

Examples

List Directory Contents

To view the contents of the matlab/audio directory, type

• dir $matlabroot/toolbox/matlab/audio
  

Using Wildcard and File Extension

To view the MAT files in your current working directory that include the term java, type

• dir *java*.mat
  

MATLAB returns

• java_array.mat  javafrmobj.mat  testjava.mat
  

Using Relative Pathname

To view the M-files in the MATLAB audio directory, type

• dir(fullfile(matlabroot,'toolbox/matlab/audio/*.m'))
  

MATLAB returns

• Contents.m          auread.m            soundsc.m
  audiodevinfo.m      auwrite.m           wavplay.m
  audioplayer.m       lin2mu.m            wavread.m
  audioplayerreg.m    mu2lin.m            wavrecord.m
  audiorecorder.m     prefspanel.m        wavwrite.m
  audiouniquename.m   sound.m
  

Returning File List to Structure

To return the list of files to the variable audio_files, type

• audio_files=dir(fullfile(matlabroot,'toolbox/matlab/audio/*.m')
  )
  

MATLAB returns the information in a structure array.

• audio_files =
  19x1 struct array with fields:
      name
      date
      bytes
      isdir
  

Index into the structure to access a particular item. For example,

• audio_files(3).name
  ans =
  audioplayer.m