AT&T Unix Owner's Manual page 184

Changing User Preferences
Empty Wastebasket?: You can choose the interval in
which the Wastebasket is emptied. All previously
deleted files contained in the Wastebasket are
automatically removed from the system. The Wastebasket
is emptied following a login. So, if your selected
interval is Daily, your Wastebasket is automatically
emptied after you log in every day. The four cleanup
interval selections are Never, Daily, Weekly, or
Monthly. If you keep the Never selection, you must
remember to open your Wastebasket periodically and
delete files from it manually.
Note
The following read, write, and run
permissions affect all folders and files
that you create after you change the
preferences settings. Any folders and
files you created prior to the
preferences change may not have the same
permissions. Use the Security command
to see and, if you like, change the
current permission for any folder or
file.
Read permissions: You can use this field to control
whether other users can view or copy folders and files
belonging to the current user name. Two read
permission settings can be used: Private and Public.
Write permissions: You can use this field to control
whether other users can update or modify files and
folders belonging to the current user name. Three
write permission settings can be used: Private,
Public, and Write protected.
Run
permissions: You can use this field to control
whether other users can run executable files belonging
to the current user name. Three run permission
settings can be used: Private, Public, and Can't run.
All text files should have permissions set to Can't
run.
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