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ACL: Remove hidden ACE

The Question is:

VMS 5.5 How do I remove a hidden and protected ACE from an ACl.
Using SET ACL/ACL=(id)/DEL=ALL object.ext gives cannot modify
hidden ace.  Using editor gives cannot modify protected ace.

So how do I get rid of it.

The Answer is:

    According to $HELP SET SECURITY /DELE you can remove any and
    all ACL, including protected ones with:

    	$set secu /acl/del=all

    I've tested this with

    	$SET FILE/STAT x.x
    	$SET PROC/PRI=SECU
    	$DIR/ACL x.x
    	$set secu /acl/del=all
    	$DIR/ACL x.x

    Hope this helps,

    Using EDIT/ACL, the following magic incantation will allow the deletion
    and/or modification of hidden and/or protected ACEs:

    press ^D
    at the command prompt:
    TPU Command: acledit$c_check_modify:=0;

    See ACL editor source code  in SYS$UPDATE:ACLEDIT.TPU. You could
    modify it to make a special editor which has this as the default.

    Note - this is probably unsupported.