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README
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1992-11-21
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8KB
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204 lines
Below is Edwins original (V1.0) README. You may elect to send bug
reports/enhancements to him, or me. I will happily handle them.
Note that I have been unable to test all file types so if you
discover that I may have broken something, please let me know.
(Send a sample of the file!)
Gary Duncan
57 Melbourne Hill Rd
Warrandyte Vic 3113
Australia.
Internet: gduncan@philips.oz.au
Thanks!
Version 1.0 README-------------------------------------------------------
file v1.0 - Unix-like utility to determine
the type of a file
Copyright 1989 Edwin Hoogerbeets
This code is freely redistributable as long as no charge other than
reasonable copying fees is levied for it.
Usage:
file filename [filename ...]
[Options? We don need no steekeen options!]
Notes:
This silly little hack I wrote for no particular reason other than
boredom in CS classes, where it was mostly written. ;-)
File recognizes the following types of files:
Amiga .font file - File containing the description of what is in
a subdirectory of the fonts directory.
ex: garnet.font
Amiga .info file - The silly little files you find hanging around
in any directory you looked at with the WorkBench.
ex: .info
Amiga icon .info file - A disk, drawer, project or tool icon.
ex: System.info
Amiga load file - this type includes executables, shared libraries,
devices, and loadable font files.
They all have the format of an executable, so it
is difficult to tell which is which. (anyone have
a way of telling? Please mail me if you do)
ex: c:Type, arp.library, ramdrive.device, garnet/16
Amiga object file - A file compiled with Lattice C, PDC or A68k.
ex: SetFont.o
block compressed xx bit code data - a file compressed with the
compress program.
ex: constitution.Z
commands text - this file was not marked as a script file, but
contains commands suitable as a script.
ex: FooScript
C source code - file contains constructs that look like C. If these
constructs are not found, the file may be mistaken
for a ARexx script if the first two characters are
`/*'
ex: file.c
data - the file contains binary data of an unknown format.
directory - file is a directory
empty - the file contains nothing, making it impossible to determine
what kind of file it was meant to be in its former life.
execute script file - a file meant to be run with execute.
ex: s:DPAT
IFF format file - File recognizes the following forms:
8SVX instrument file format
ANIM anim file format
ACBM Amiga compressed bit map format
ILBM interleave bit map format
SMUS simple music format
LaTeX source code - input file suitable for the LaTeX document
preparation system.
ex: resume.tex
Manx 3.6 run-time library - objects compiled with Manx 3.6 and
stuck into a linkable library.
ex: ed32.lib
Manx 3.4 object code
Manx 3.6 object code - file compiled with Manx 3.4 or 3.6 respectively
ex: file.o
Modula II source code - file is source code for any Modula II
ex: Primes.mod
SEA ARC compressed archive - an archive compressed with the ARC program.
ex: boff.arc
script file - text file with the script bit set.
ex: s:FindOldFiles
shell commands - the file was not labeled as a script, but contains
shell commands.
ex: s:.cshrc
shell script - the file is a script for the Dillon/Drew shell.
It searches for `#!' at the beginning of the file,
so please add these to your Dillon/Drew shell scripts.
ex: BackUpHD.sh
TeX device independent output file - output of Tex, LaTeX, BibTeX
or AMSTeX.
ex: letter.dvi
TeX source code - a file suitable for input to TeX document formatting
system.
ex: resume.tex
text - the file contains ascii characters of an unknown format
ex: ReadMe
uuencoded file - a file that is suitable as input for uudecode
ex: file.uue
yacc input file - a file that is suitable as input to the yacc or
bison parser generator programs.
ex: grammar.y
yacc or lex input file - a file that is either suitable for yacc
(bison) or lex. The exact format cannot
be determined by file due to its
unsophisticatedness. (how's that for a word?)
ex: lex.l or hiddengrammar.y
Zoo x.xx archive - an archive made with the zoo program.
ex: file.zoo
Warning:
This program is a kludge. This program is only a kludge. Had this program
been real, it would have been a heck of a lot bigger. As it is, it only
checks the first 484 bytes of a file for format clues, and makes guesses
as to the probable file type. For binary files, magic numbers found at
the beginning of the file are checked. For text files, familiar sequences
are searched for throughout the excerpt to make the guess.
Things it May Get Wrong:
- An ARexx script starts with `/*', which, perchance, also start off many
C programs
- Many TeX or LaTeX files contain "{\n", which are also found in
C programs
- a binary file may very rarely contain only printable ascii characters
in the first section of the file, leading file to think it is
actually a piece of text. (no, your program has not been magically
transformed into a .font file!)
A Comment:
If you have a favourite file format that you would like added to the
program, send me mail and I will add it. Better yet, send me the
(freely redistributable) file that is characteristic of the file type.
Better yet, tell me what the distinguishing characteristic is.
Well, come to think of it, forget the above, and just send me your
patched version of file and I will incorperate the changes into the
official release. Have a nice day. This has been more than one
comment, hasn't it? I babble sometimes.
Files:
ReadMe rwed 7111 14 21-May-89 23:21:26
file rwed 9352 19 21-May-89 22:59:15
file.c rwed 8528 17 21-May-89 22:58:10
makefile rwed 337 1 19-May-89 23:29:52
55 Blocks, 25328 Bytes used in 4 files
Please redirect any comments, criticisms or dark chocolate to:
Edwin Hoogerbeets (It's a Dutch name. I was born with it... )
Usenet: ehoogerbeets@rose.waterloo.edu (watmath!watrose!ehoogerbeets) or
edwin@watcsc.waterloo.edu
CIS: 72647,3675 (any time at all)