Phil Howard:
> It looks like postmap can read stdin when getting a list of keys for
> delete or query.
As documented in the postmap manpage:
-d key
...
If a key value of - is specified, the program reads key values
from the standard input stream.
-i Incremental mode. Read entries from standard input and do not
truncate an existing database.
-q key
...
If a key value of - is specified, the program reads key values
from the standard input stream and writes one line of key value
output for each key that was found.
> There appeared to be no documented way to read from
> stdin to create a new map.
Wietse
