readdir

READDIR(3am)                GNU Awk Extension Modules               READDIR(3am)



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)