88 lines
3.7 KiB
Plaintext
88 lines
3.7 KiB
Plaintext
MTOOLS
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version 1.6.2 - 5 Jul 89
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This is a collection of MSDOS tools to allow you to read and write to
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MSDOS formatted diskettes from a Unix based system.
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The following MSDOS commands are emulated:
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Mtool MSDOS
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name equivalent Description
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----- ---- -----------
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mcopy COPY copy MSDOS files to/from Unix
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mdel DEL/ERASE delete a MSDOS file
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mdir DIR display a MSDOS directory
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mkdfs FORMAT Format and build s DOS file system.
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mmd MD/MKDIR make a MSDOS sub directory
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mrd RD/RMDIR remove a MSDOS sub directory
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mread COPY low level read (copy) a MSDOS file to Unix
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mren REN/RENAME rename an existing MSDOS file
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mtype TYPE display contents of a MSDOS file
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mwrite COPY low level write (copy) a Unix file to MSDOS
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* CD change working directory
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* by use of the environmental variable MCWD
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The formats of IBM PC floppy disk drives are:
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bytes per sectors per tracks number total disk introduced
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sector track per side of sides capacity size in MSDOS
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512 8 40 1 160k 5.25 1.0
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512 9 40 1 180k 5.25 1.1
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512 8 40 2 320k 5.25 2.0
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512 9 40 2 360k 5.25 2.0
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512 15 80 2 1.2M 5.25 3.0
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512 9 80 2 720k 3.5 3.1
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512 18 80 2 1.4M 3.5 3.2
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Find UNIX device(s) capable of reading one or more of these formats
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and edit "devices.c" to add them to the driver switch, you may
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add the same device more than once if it supports multiple formats
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and needs "ioctls" to be set to the right physical parameters.
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The disk geometry can be kept in the environment for unusual cases,
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init.c will pass "NCYL", "NSECT" and "NTRACK" to the disk parameter
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setting routine (if any). This should be documented in an "mtools"
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manual page giving an overview of the whole package, this file is a
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start.
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The manuals are very terse... it's assumed that the reader is already
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familiar with MSDOS.
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The use of the environmental variable MCWD to keep track of the current
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working directory is a little awkward, especially since there is no
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'change directory' command. Bourne shell users will have to type two
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commands to initially set their working directory, ie:
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MCWD=/TMP
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export MCWD
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Wildcards are only applied to filenames and not to directory names. For
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example '/usr/local/*.c' is appropriate, but '/usr/l*/main.c' is not.
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I really wanted to avoid the use of a 'text' mode and a 'data' mode when
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transferring files, but I couldn't find a better way. It gets rather
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confusing and it's quite possible to mess up a file if you apply the
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text mode when it is not appropriate (ie: to a COM or EXE file).
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Likewise, if you forget to apply the text mode (to a Unix text file)
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then if the file is used under MSDOS, it will be missing carriage
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returns. However, if you aren't going to use the files on your Unix
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system (you just intend to hold the files and then transfer them back to
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MSDOS later) then you shouldn't use the text mode during either mread or
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mwrite. This is because, the text mode is only useful if the files are
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gonna be used under Unix.
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The implementation of the Mcopy command is somewhat clumbsy since the
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MSDOS drive designation "A:" is used. Mcopy is really a front-end to
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the low level Mread and Mwrite commands.
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There are is a shell archives called "Unixpc.shar" that contain files
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specific to the AT&T Unix PC 7300/3b1.
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Emmet P. Gray US Army, HQ III Corps & Fort Hood
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...!uunet!uiucuxc!fthood!egray Attn: AFZF-DE-ENV
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Directorate of Engineering & Housing
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Environmental Management Office
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Fort Hood, TX 76544-5057
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