zdbs is used to store records in a database file. Records
are entered via stdin or, optionally, they are read from an
input file, with one record per line. Each record should consist of
one key-value pair. The values should be separated from the keys by a
common delimiter (’|’ by default), for example “key|value”.
In addition to the database file to be used and the common options,
zdbs command accepts the following options:
Delimiter character separating keys from values (default ’|’).
Read new records from a file instead of from stdin.
Automatically synchronize all database operations to the disk.