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CPMCHMOD(1) User commands CPMCHMOD(1)


cpmchmod - change file mode on CP/M files


cpmchmod [-f format] [-u] image mode file-pattern ...


Cpmchmod changes the file mode for files on CP/M files.


Use the given CP/M disk format instead of the default format.
libdsk driver type, e.g. tele for Teledisk images or raw for raw images (requires building cpmtools with support for libdsk).
Show all CP/M file names in upper case.
Octal file mode, as used in chmod(1).


Upon successful completion, exit code 0 is returned.


Any errors are indicated by exit code 1.


CPMTOOLSFMT Default format


/etc/cpmtools/diskdefs CP/M disk format definitions


This program is copyright 1997–2021 Michael Haardt <> and copyright 2000, 2001, 2011 John Elliott <>.

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.


cpmls(1), chmod(1), cpm(5)

November 2, 2022 CP/M tools