MPE/iX Commands Reference Manual (32650-90877)

66 Chapter3
Command List I
Commands ABORT to BYE
File Access Matrix Examples
To view the file access matrix, use LISTFILE,4.
You have created a file named FDATA, and want to change its file access matrix access
permissions to grant write access to only yourself. Enter:
ALTSEC FDATA;ACCESS=(W:CR)
To change file access permissions for the FPROG program file to allow all group users to
execute programs, but only account and group librarian users to read or write to the file,
enter:
ALTSEC FPROG;ACCESS=(X:GU;R,W:AL,GL)
ACD Examples
To view ACD information, use the LISTFILE,-2 command. This form of the LISTFILE
command displays
only ACD information.
You have created a file named FDATA, and want to assign a new ACD to FDATA, granting
write access to a user named FRIEND.ACCT. Enter:
ALTSEC FDATA;NEWACD=(W:FRIEND.ACCT)
As the creator of a file, you can access the file by default, so you don't need to grant yourself
access through an ACD. Users with appropriate privileges are always permitted to access
files protected by ACDs.
To extend the ACD for the FDATA file so that all users on the system can read it, and all
users within your account ACCT can also write to it, enter:
ALTSEC FDATA;ADDPAIR=(R:@.@;W,R:@.ACCT)
If you decide that users outside your account ACCT should not have read access to the file
FDATA any longer, enter:
ALTSEC FDATA;DELPAIR=(@.@)
This does not delete all ACD pairs, only the ACD pair matching @.@. To delete the entire
ACD, enter:
ALTSEC FDATA;DELACD
To replace the entire ACD, enter:
ALTSEC FDATA;REPACD=(W:FRIEND.ACCT)
You want to copy the ACD associated with LDEV 5 to all devices in device class TERM:
ALTSEC TERM,DEVCLASS;COPYACD=5,LDEV
ACDs may be copied only between objects of the same type.
You want to grant users in account ACCT all access to directory Mydir1:
ALTSEC ./Mydir1;ADDPAIR=(CD,DD,RD,TD,RACD:@.ACCT)
You want to grant read and write access to yourself and read access for other members of
your group to an HFS Syntax file named a_file_of_Mine:
ALTSEC ./a_file_of_Mine;REPPAIR=(RACD,R,W:$OWNER;
RACD,R:$GROUP,$GROUP_MASK;NONE:@.@)