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Acorn Communicator Filestore Manager's Guide

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Access<br />

Security<br />

3 MANAGEMENT FACILITIES:<br />

SAFEGUARDING DATA<br />

Users will normally only be able to use, change or delete files in their own<br />

directories. The main exception to this is the files in the public directories, such as<br />

$. UTILS and $. LIBRARY. Users will usually be able to use files in these<br />

directories, but not change or delete them.<br />

To control a file's accessibility to other users:<br />

1. Return to the main menu (press I STOP I).<br />

2. Select BASIC, or the command screen of an application, and press<br />

I<br />

3. Type:<br />

*ACCESS name owner/public<br />

where name is the name of the file whose access you want to change,<br />

owner is the access you want to allow its owner and public is the access<br />

you want to allow other users.<br />

Owner and public can consist of any combination of R, W and L,<br />

which have the following meanings:<br />

R means that the file can be read.<br />

W means that the file can be written to (changed).<br />

L means that the file is locked (cannot be deleted).<br />

See the <strong>Communicator</strong> User <strong>Guide</strong>, Chapter 2, for a fuller explanation.<br />

4. For example, to allow the owner to do what they like with a file but<br />

allow other users only to use but not change or delete the file text , type:<br />

*ACCESS text WR/RL<br />

Your user id, SYST, is very powerful; other users should not be allowed to use<br />

it as it will allow them to perform all sorts of 'dangerous' tasks, such as<br />

running NETMGR or deleting other users' files. To make sure that other<br />

users do not use this id, remember to log off whenever you are leaving your<br />

<strong>Communicator</strong> unattended, don't tell others your password and change your<br />

password at regular intervals.<br />

3 MANAGEMENT FACILITIES: SAFEGUARDING DATA<br />

23

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