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 Option	Equivalent
-B x	shared_buffers = x
-d x	log_min_messages = DEBUGx
-e	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
-F	fsync = off
-h x	listen_addresses = x
-i	listen_addresses = '*'
-k x	unix_socket_directories = x
-l	ssl = on
-N x	max_connections = x
-O	allow_system_table_mods = on
-p x	port = x
-P	ignore_system_indexes = on
-s	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