NAME

       readdir - directory input parser for gawk

SYNOPSIS

       @load "readdir"

DESCRIPTION

       The readdir extension adds an input parser for directories.

       When  this  extension  is  in  use,  instead  of  skipping directories named on the command line (or with
       getline), they are read, with each entry returned as a record.

       The record consists of three fields. The first two are the inode number and the filename, separated by  a
       forward  slash  character.  On systems where the directory entry contains the file type, the record has a
       third field which is a single letter indicating the type of the file: f for file, d for directory, b  for
       a block device, c for a character device, p for a FIFO, l for a symbolic link, s for a socket.

       On  systems  without  the file type information, the extension falls back to calling stat(2), in order to
       provide the information.  Thus the third field should never be u.

       By default, if a directory cannot be opened (due to permission problems, for example),  gawk  will  exit.
       As  with regular files, this situation can be handled using a BEGINFILE rule that checks ERRNO and prints
       an error or otherwise handles the problem.

EXAMPLE

       @load "readdir"
       ...
       BEGIN { FS = "/" }
       { print "file name is", $2 }

SEE ALSO

       GAWK: Effective AWK Programming,  filefuncs(3am),  fnmatch(3am),  fork(3am),  inplace(3am),  ordchr(3am),
       readfile(3am), revoutput(3am), rwarray(3am), time(3am).

       opendir(3), readdir(3), stat(2).

AUTHOR

       Arnold Robbins, arnold@skeeve.com.

COPYING PERMISSIONS

       Copyright © 2012, 2013, 2018, 2019 Free Software Foundation, Inc.

       Permission  is  granted to make and distribute verbatim copies of this manual page provided the copyright
       notice and this permission notice are preserved on all copies.

       Permission is granted to copy and distribute modified versions of this manual page under  the  conditions
       for verbatim copying, provided that the entire resulting derived work is distributed under the terms of a
       permission notice identical to this one.

       Permission  is  granted  to  copy  and distribute translations of this manual page into another language,
       under the above conditions for modified versions, except that this permission notice may be stated  in  a
       translation approved by the Foundation.

Free Software Foundation                           Oct 30 2019                                      READDIR(3am)