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+## README for file(1) Command ##
+
+ @(#) $File: README,v 1.50 2016/04/16 22:40:54 christos Exp $
+
+Mailing List: file@mx.gw.com
+Mailing List archives: http://mx.gw.com/pipermail/file/
+Bug tracker: http://bugs.gw.com/
+E-mail: christos@astron.com
+
+[![Build Status](https://travis-ci.org/file/file.png?branch=master)](https://travis-ci.org/file/file)
+
+Phone: Do not even think of telephoning me about this program. Send cash first!
+
+This is Release 5.x of Ian Darwin's (copyright but distributable)
+file(1) command, an implementation of the Unix File(1) command.
+It knows the 'magic number' of several thousands of file types.
+This version is the standard "file" command for Linux,
+*BSD, and other systems. (See "patchlevel.h" for the exact release number).
+
+You can download the latest version of the original sources for file from:
+
+ ftp://ftp.astron.com/pub/file/
+
+A public read-only git repository of the same sources is available at:
+
+ https://github.com/file/file
+
+The major changes for 5.x are CDF file parsing, indirect magic, name/use
+(recursion) and overhaul in mime and ascii encoding handling.
+
+The major feature of 4.x is the refactoring of the code into a library,
+and the re-write of the file command in terms of that library. The library
+itself, libmagic can be used by 3rd party programs that wish to identify
+file types without having to fork() and exec() file. The prime contributor
+for 4.0 was Mans Rullgard.
+
+UNIX is a trademark of UNIX System Laboratories.
+
+The prime contributor to Release 3.8 was Guy Harris, who put in megachanges
+including byte-order independence.
+
+The prime contributor to Release 3.0 was Christos Zoulas, who put
+in hundreds of lines of source code changes, including his own
+ANSIfication of the code (I liked my own ANSIfication better, but
+his (__P()) is the "Berkeley standard" way of doing it, and I wanted UCB
+to include the code...), his HP-like "indirection" (a feature of
+the HP file command, I think), and his mods that finally got the
+uncompress (-z) mode finished and working.
+
+This release has compiled in numerous environments; see PORTING
+for a list and problems.
+
+This fine freeware file(1) follows the USG (System V) model of the file
+command, rather than the Research (V7) version or the V7-derived 4.[23]
+Berkeley one. That is, the file /etc/magic contains much of the ritual
+information that is the source of this program's power. My version
+knows a little more magic (including tar archives) than System V; the
+/etc/magic parsing seems to be compatible with the (poorly documented)
+System V /etc/magic format (with one exception; see the man page).
+
+In addition, the /etc/magic file is built from a subdirectory
+for easier(?) maintenance. I will act as a clearinghouse for
+magic numbers assigned to all sorts of data files that
+are in reasonable circulation. Send your magic numbers,
+in magic(5) format please, to the maintainer, Christos Zoulas.
+
+COPYING - read this first.
+README - read this second (you are currently reading this file).
+INSTALL - read on how to install
+src/localtime_r.c
+src/magic.c
+src/magic.h
+src/mygetopt.h
+src/newtest2.c
+src/newtest3.c
+src/pread.c
+src/print.c
+src/readcdf.c
+src/readelf.c
+src/readelf.h
+src/regex.c
+src/regex2.c
+src/softmagic.c
+src/strcasestr.c
+src/strlcat.c
+src/strlcpy.c
+src/strndup.c
+src/tar.h
+src/teststrchr.c
+src/vasprintf.c
+src/x.c
+src/apprentice.c - parses /etc/magic to learn magic
+src/apptype.c - used for OS/2 specific application type magic
+src/ascmagic.c - third & last set of tests, based on hardwired assumptions.
+src/asctime_r.c - replacement for OS's that don't have it.
+src/asprintf.c - replacement for OS's that don't have it.
+src/asctime_r.c - replacement for OS's that don't have it.
+src/asprintf.c - replacement for OS's that don't have it.
+src/cdf.[ch] - parser for Microsoft Compound Document Files
+src/cdf_time.c - time converter for CDF.
+src/compress.c - handles decompressing files to look inside.
+src/ctime_r.c - replacement for OS's that don't have it.
+src/der.[ch] - parser for Distinguished Encoding Rules
+src/dprintf.c - replacement for OS's that don't have it.
+src/elfclass.h - common code for elf 32/64.
+src/encoding.c - handles unicode encodings
+src/file.c - the main program
+src/file.h - header file
+src/file_opts.h - list of options
+src/fmtcheck.c - replacement for OS's that don't have it.
+src/fsmagic.c - first set of tests the program runs, based on filesystem info
+src/funcs.c - utilility functions
+src/getline.c - replacement for OS's that don't have it.
+src/getopt_long.c - replacement for OS's that don't have it.
+src/gmtime_r.c - replacement for OS's that don't have it.
+src/is_tar.c, tar.h - knows about Tape ARchive format (courtesy John Gilmore).
+src/localtime_r.c - replacement for OS's that don't have it.
+src/magic.h.in - source file for magic.h
+src/mygetopt.h - replacement for OS's that don't have it.
+src/magic.c - the libmagic api
+src/names.h - header file for ascmagic.c
+src/pread.c - replacement for OS's that don't have it.
+src/print.c - print results, errors, warnings.
+src/readcdf.c - CDF wrapper.
+src/readelf.[ch] - Stand-alone elf parsing code.
+src/softmagic.c - 2nd set of tests, based on /etc/magic
+src/mygetopt.h - replacement for OS's that don't have it.
+src/strcasestr.c - replacement for OS's that don't have it.
+src/strlcat.c - replacement for OS's that don't have it.
+src/strlcpy.c - replacement for OS's that don't have it.
+src/tar.h - tar file definitions
+src/vasprintf.c - for systems that don't have it.
+doc/file.man - man page for the command
+doc/magic.man - man page for the magic file, courtesy Guy Harris.
+ Install as magic.4 on USG and magic.5 on V7 or Berkeley; cf Makefile.
+
+Magdir - directory of /etc/magic pieces
+------------------------------------------------------------------------------
+
+If you submit a new magic entry please make sure you read the following
+guidelines:
+
+- Initial match is preferably at least 32 bits long, and is a _unique_ match
+- If this is not feasible, use additional check
+- Match of <= 16 bits are not accepted
+- Delay printing string as much as possible, don't print output too early
+- Avoid printf arbitrary byte as string, which can be a source of
+ crash and buffer overflow
+
+- Provide complete information with entry:
+ * One line short summary
+ * Optional long description
+ * File extension, if applicable
+ * Full name and contact method (for discussion when entry has problem)
+ * Further reference, such as documentation of format
+
+------------------------------------------------------------------------------
+
+Parts of this software were developed at SoftQuad Inc., developers
+of SGML/HTML/XML publishing software, in Toronto, Canada.
+SoftQuad was swallowed up by Corel in 2002 and does not exist any longer.