Alvaro Herrera <alvherre(at)2ndquadrant(dot)com> writes:
> Seems to me that passing %-specifiers to the command would make it more
> useful (%u for "user", "host" etc) -- your command could refuse to give
> you a password for the superuser account for instance but grant one for
> a read-only user.
It would also provide a *very* fertile source of shell-script-injection
vulnerabilities. (Whaddya mean, you tried to use a user name with a
quote mark in it?)
This is exactly the kind of area in which I'm concerned for the
possibility of sloppily-written scripts being a net negative for
security.
regards, tom lane