.ap
.lm 10
.rm 70
.flags capitalize
.figure 4
.centre;The <become Command
 The <become command allows a privileged user to assume almost any
attributes of any user in the <uaf. The program requires <cmkrnl
privilege, since the information it changes is in protected memory.
 There is help for <become in the file <become.hlp. The program is
pretty much self-explanatory, I believe. </username and </uic are the
defaults, which may be changed by editing the <become.cld file. If you
plan to put the <become executable somewhere other than <sys$system,
the <.cld file will need to be edited to reflect the new location.
 <become is a command, and the command definition for it is in the
aforementioned <.cld file. See the <aaareadme.1st file for <inform for
information about installing the command.
 We have found <become very useful at <ecs, since we have a number of
'development' accounts (privileged) which are very project-specific.
<become allows us to keep these quotas and privileges separate without
having the danger of the account being broken into - since they are set
</flags=disuser in the <uaf! Also, <become is very useful for moving
files around without having to look up a <uic and then set it.
 <become tries to grab <cmkrnl, so if your <authpriv mask specifies
either <cmkrnl or <setprv (regardless of the <curpriv mask), you can
use it. When munging privileges, it modifies <only the <curpriv mask.
 A word of caution, and a note on our implementation: <do <not <install
<become! It is a very dangerous program, having essentially the same
implicit hazards of <setprv and <detach, and should be used <only by
responsible people. At <ecs, we have two sets of commands: those the
users can execute, and those available to the staff. The latter are a
superset of the former. The users are not even aware of such programs
as <become, as the help is in a help library pointed to by a <group
logical name available only to the staff groups. The command set is set
up by the system login procedure (<sys$sylogin), and the staff command
set is protected from world access.
 <become is usable only on <vms systems running <v3.0 or higher.