Each site in a UUCP network has a
Permissions file
that is used to control the access that remote systems have to data
and programs on the local system. This file is used to specify, among
other options, the areas in the file system that a remote system can
read or write from, the commands that the remote system can run on
the local system, and a different public directory than the default.
Those options are specified as:
- READ
- Indicates which directories can be read. By default, this is
the home directory of user uucp (/usr/spool/uucppublic).
- WRITE
- Indicates which directories uucico can write to. By
default, this is /usr/spool/uucppublic, the
home directory of user uucp.
- NOREAD
- Indicates that files in the specified directories cannot be
read. If a directory is specified by both READ and NOREAD, files in that directory cannot be read. The public directory
can always be read (even if specified on NOREAD).
- NOWRITE
- Indicates that files in the specified directories cannot be
written to. If a directory is specified by both WRITE and NOWRITE, files in that directory cannot be written to. The public
directory can always be written to (even if specified on NOWRITE).
- PUBDIR
- Indicates the public directory. By default, this is the home
directory of user uucp (/usr/spool/uucppublic).
- COMMANDS
- Indicates the commands that the remote system can execute on
your system. If more than one command is specified, the command names
are separated with a colon (:). For example, COMMANDS=uucp:ls.
If all commands are prohibited, the COMMANDS option is
not used.
For a full description of all the Permissions file
options, see The Permissions File in z/OS UNIX System Services Planning.