dir (command)

For other uses, see Dir (disambiguation).

In computing, dir (directory) is a command used for file and directory listing, specifically in the command line interface (CLI) of the operating systems CP/M, DOS, OS/2, Singularity, Microsoft Windows and in the DCL command line interface used on VMS, RT-11 and RSX-11. The command is also supplied with OS/8 as a CUSP (Commonly-Used System Program).

Sample usage

The following example demonstrates the output of the dir command on Windows 7, without arguments:

C:\Users\Public\Pictures\Sample Pictures>dir
 Volume in drive C is System
 Volume Serial Number is C8D0-76E2

 Directory of C:\Users\Public\Pictures\Sample Pictures

14-07-2009  06:41    <DIR>          .
14-07-2009  06:41    <DIR>          ..
14-07-2009  06:52           879,394 Chrysanthemum.jpg
14-07-2009  06:52           845,941 Desert.jpg
14-07-2009  06:52           595,284 Hydrangeas.jpg
14-07-2009  06:52           775,702 Jellyfish.jpg
14-07-2009  06:52           780,831 Koala.jpg
14-07-2009  06:52           561,276 Lighthouse.jpg
14-07-2009  06:52           777,835 Penguins.jpg
14-07-2009  06:52           620,888 Tulips.jpg
               8 File(s)      5,837,151 bytes
               2 Dir(s)  57,925,980,160 bytes free

C:\Users\Public\Pictures\Sample Pictures>dir /w
 Volume in drive C is System
 Volume Serial Number is C8D0-76E2

 Directory of C:\Users\Public\Pictures\Sample Pictures

[.]                 [..]                Chrysanthemum.jpg   Desert.jpg          Hydrangeas.jpg      Jellyfish.jpg
Koala.jpg           Lighthouse.jpg      Penguins.jpg        Tulips.jpg
               8 File(s)      5,837,151 bytes
               2 Dir(s)  57,925,992,448 bytes free

C:\Users\Public\Pictures\Sample Pictures>

Options/Switches

C:\>HELP DIR
DIR [drive:][path][filename] [/A[[:]attributes]] [/B] [/C] [/D] [/L] [/N]
 [/O[[:]sortorder]] [/P] [/Q] [/R] [/S] [/T[[:]timefield]] [/W] [/X] [/4]

 [drive:][path][filename]
             Specifies drive, directory, and/or files to list.

 /A          Displays files with specified attributes.
 attributes   D  Directories                R  Read-only files
              H  Hidden files               A  Files ready for archiving
              S  System files               I  Not content indexed files
              L  Reparse Points             -  Prefix meaning not
 /B          Uses bare format (no heading information or summary).
 /C          Display the thousand separator in file sizes.  This is the
             default.  Use /-C to disable display of separator.
 /D          Same as wide but files are list sorted by column.
 /L          Uses lowercase.
 /N          New long list format where filenames are on the far right.
 /O          List by files in sorted order.
 sortorder    N  By name (alphabetic)       S  By size (smallest first)
              E  By extension (alphabetic)  D  By date/time (oldest first)
              G  Group directories first    -  Prefix to reverse order
 /P          Pauses after each screenful of information.
 /Q          Display the owner of the file.
 /R          Display alternate data streams of the file.
 /S          Displays files in specified directory and all subdirectories.
 /T          Controls which time field displayed or used for sorting timefield.
              C  Creation
              A  Last Access
              W  Last Written
 /W          Uses wide list format.
 /X          This displays the short names generated for non-8dot3 file names.  The format is that of /N with the
             name inserted before the long name.  If no short name is present, blanks are displayed in its place.
 /4          Displays four-digit years.

Switches may be present in the DIRCMD environment variable. Override preset switches by prefixing any switch with - (hyphen) -- for example, /-W. [1]

Unices

dir is not a Unix command, Unix has the analogous ls command instead. The GNU/Linux operating system, however, has a dir command that "is equivalent to ls -C -b; that is, by default files are listed in columns, sorted vertically, and special characters are represented by backslash escape sequences," as the documentation says.[2]

See also

References

  1. ↑ Windows 7
  2. ↑ dir invocation (GNU coreutils) at www.gnu.org
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