## CPMCHATTR

Section: User commands (1)
Updated: December 1, 2013
Index Return to Main Contents Disclaimer

NAME cpmchattr - change file attributes on CP/M files.
SYNOPSIS
cpmchattr [-f format] image attrib file-pattern ...
Note: Wildcards like *.com should be preceded with the user number using a pattern like 0:*.com.
DESCRIPTION
Cpmchattr changes the file attributes for files on CP/M disks.
OPTIONS

-f
  Use the given CP/M disk format instead of the default format.
  For Apple II CP/M 80 users the cpmchattr command may have no practical effect. Try cpmchmod instead for setting read only attributes.
attrib Set the file attributes as given.

The file attribute string can contain the characters 1,2,3,4,r,s,a,n and m.
The meanings of these are:

1-4
  The CP/M "user attributes" F1-F4. CP/M does not assign any meaning to these attributes, though MP/M does.
r
  The file is read-only. This is the same as using cpmchmod(1). to revoke write permissions.
s
  The file is a system file. This attribute can also be set by cpmchmod(1).
a
  The file has been backed up.
n
  Reset all attributes to zero. So the string "n1r" resets all attributes and then sets F1 and Read-Only.
m
  Attributes after an m are unset rather than set. The string "12m34" sets atttributes F1 and F2, and unsets F3 and F4.

RETURN VALUE - Upon successful completion, exit code 0 is returned.
This will likely only be of interest to programmers. In a Win32 system the exit code can be trapped in a batch file as an "ERRORLEVEL" or as a return value when run from another Win32 console program written in a language like C.
ERRORS - Any errors are indicated by exit code 1.
This will likely only be of interest to programmers. In a Win32 system the exit code can be trapped in a batch file as an "ERRORLEVEL" or as a return value when run from another Win32 console program written in a language like C.
FILES - diskdefs - CP/M disk format definitions
The diskdefs file is a plain ascii text file (in "unix" format, not Windows format) that serves as a database of disk and disk image format definitions. It can be reviewed for available CP/M formats and their names. For Apple II CP/M 80 users the disk image formats apple-do and apple-po are available.
To convert between Windows text and "unix" text, two utilities (rmcr and cr) are included in the Windows distro of the cpmtools binaries. These are included so you can use a Windows text editor to edit a copy of diskdefs if your Windows text editor does not edit "unix" text.
The possible locations where cpmtools first looks for the diskdefs file:
Can vary depending on the preferences of the person who builds the cpmtools binaries (executables) from the source code.
If it's not found the current (work) directory is then searched for a file called diskdefs.
The Windows distro uses \cpmtools\diskdefs as a default.
On a unix-like system, a ${prefix}/share/ style path like /usr/local/share/ is a possible place that cpmtools will first look for diskdefs.
In a Win32 system sometimes unix-like shells like cygwin are used to build and run cpmtools instead of Windows cmd. For those installations unix-like conventions may apply.
AUTHORS
This program is copyright 1997-2013 Michael Haardt <michael@moria.de> and copyright 2000, 2001, 2011 John Elliott <jce@seasip.demon.co.uk>.
This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3 of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with this program. If not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
SEE ALSO
cmpls(1), cpmchmod(1), cpm(5)

Index

NAME cpmchattr - change file attributes on CP/M files.
SYNOPSIS
DESCRIPTION
  OPTIONS
  FILE ATTRIBUTES
  RETURN VALUE
  ERRORS
  FILES
AUTHORS
SEE ALSO

Caveat Emptor
The contents of this document are either part of cpmtools or provide additional information about using cmptools. You can redistribute it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3 of the License, or (at your option) any later version.
Bill Buckels has no warranty obligations or liability resulting from this document's use in any way whatsoever. If you don't agree then don't read it.