20.18. Short Options

For convenience there are also single letter command-line option switches available for some parameters. They are described in Table 19.2. Some of these options exist for historical reasons, and their presence as a single-letter option does not necessarily indicate an endorsement to use the option heavily.

Table 19.2. Short Option Key

Short OptionEquivalent

-B x

shared_buffers = x

-d x

log_min_messages = DEBUGx


datestyle = euro

-fb, -fh, -fi, -fm, -fn, -fo, -fs, -ft

enable_bitmapscan = off, enable_hashjoin = off, enable_indexscan = off, enable_mergejoin = off, enable_nestloop = off, enable_indexonlyscan = off, enable_seqscan = off, enable_tidscan = off


fsync = off

-h x

listen_addresses = x


listen_addresses = '*'

-k x

unix_socket_directories = x


ssl = on

-N x

max_connections = x


allow_system_table_mods = on

-p x

port = x


ignore_system_indexes = on


log_statement_stats = on

-S x

work_mem = x

-tpa, -tpl, -te

log_parser_stats = on, log_planner_stats = on, log_executor_stats = on

-W x

post_auth_delay = x