ppin
-
/five/tsiSs TRSiins
the
protection
level
for access. II
omitted.
in Mat is usiLhanyeii
Level Degree cf
access granted
by access word
•.•in Fuii access, no
protector
Kiu
K;i!.
rsnams. rsari.
execute,
and
write
(gives
iotai access,
i.e., the
least-protected}.
nawi Rename,
read execute,
and
write
WHSTt
Read execute,
ana write
rfai) Paso
ans
sxet'^e.
rxn: ?ye;^ie
sni'v
Nc
!
.8'
Each
!evBi si'nws
access ic
MseM plus ail lower levels
attrib lets you change the passwords
to an existing
file or makes the
file
invisible
or
non-invisible.
Passwords
are initially
assigned when
the
file is
created. At that time, the update and
access words
are
set to the same value
(either
the
password
you specified
or a blank password).
Examples
ATTRIB
DATAFILE (
I
*ACC
=
JULY14
»UPD=M0USE »PR0T=READ
)
Makes
the
file invisible, sets
the access
password
to julyh and
the update
password
to
mouse.
Use
of the
access word
will allow
only reading
and
executing the file.
ATTRIB
PAYROLL/BAS, SECRET (N»ACC=»)
Sets the access word to blanks.
The file is
made non-invisible
and
the protection
level
assigned to the update word is
left unchanged.
ATTRIB OLD/DAT, APPLES
(UPD= f )
Sets the update
word
to blanks.
ATTRIB PAYROLL/BAS,
PW (PR0T=EXEC)
Leaves
the access and update words
unchanged,
but
changes the
level of access.
Sample Uses
Suppose you
have
a data file, payroll,
and you want
an employee
to use the
file
in preparing paychecks. You want
the employee
to be able to read
the file
but
not to
change it. Then
use a command
like:
28
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