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


       readdir - directory input parser for gawk


       @load "readdir"

       BEGIN { PROCINFO["readdir_override"] = any_value }  # optional


       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 separated by forward slash
       characters.  The first two are the inode number and the filename, and
       the third field 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, or s for a socket.

       On systems where the directory entry contains the file type, the third
       field is filled in from that information.  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

       Normally, when reading directories, you should set FS equal to "/".
       However, you may instead chose to create PROCINFO["readdir_override"]
       (with any value). If this element exists when the directory is opened,
       then the extension automatically sets the fields in each record for

       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.


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


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

       readdir(3), stat(2).


       Arnold Robbins,


       Copyright (C) 2012, 2013, 2018, 2019, 2023 Free Software Foundation,

       Permission is granted to make and distribute verbatim copies of this
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       Permission is granted to copy and distribute translations of this
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       modified versions, except that this permission notice may be stated in
       a translation approved by the Foundation.

Free Software Foundation         June 02 2023                     READDIR(3am)

gawk 5.3.0 - Generated Thu Nov 2 10:00:37 CDT 2023
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