Safeguard User's Guide (G06.29+, H06.08+, J06.03+)
Securing Disk Files
Safeguard User’s Guide — 422089-020
3 - 9
Specifying Access With the ALTER DISKFILE 
Command
To see the settings for quarter1:
=INFO DISKFILE quarter1
The display shows:
The access control list includes both the new entry with READ authority for user 4,12, 
and the entries specified in the default access control list.
Specifying Access With the ALTER DISKFILE Command
You can use the ALTER DISKFILE command to add, delete, and change entries in an 
access control list. To do so, specify the ACCESS attribute in the ALTER command.
For example, you can grant read, write, execute, and purge privileges to user 
OAKLAND.ADMIN: 
=ALTER DISKFILE $data.log02, ACCESS \OAKLAND.ADMIN (R,W,E,P)
After changing the access control list, make sure the modified access control list is 
correct:
=INFO DISKFILE $data.log02
The display shows:
For example, you can grant user 9,23 both READ and WRITE authority to quarter1:
=ALTER DISKFILE quarter1, ACCESS 9,23 (R,W)
After changing the access control list, make sure the modified access control list is 
correct:
=INFO DISKFILE quarter1
 LAST-MODIFIED OWNER STATUS WARNING-MODE 
$DATA.SALES 
 QUARTER1 23JUL05, 15:00 2,1 THAWED OFF 
 002,001 R,W,E,P 
 002,018 R,W,E,P 
 004,012 R 
 008,004 DENY R 
 002,* R,W 
 008,* R
 LAST-MODIFIED OWNER  STATUS WARNING-MODE 
$DATA.AUDIT5 
LOG02 19SEP05, 15:11 SECURITY.ADMIN THAWED OFF 
 TESTER.USER1 R 
 SECURITY.ADMIN R,W,E,P O 
 \TEST.PROD.OPER DENY R 
 \OAKLAND.ADMIN R,W,E,P 










