For convenience there are also single letter command-line option switches available for some parameters. They are described in Table 20.4. 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 20.4. Short Option Key
| Short Option | Equivalent |
|---|---|
-B | shared_buffers = |
-d | log_min_messages = DEBUG |
-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 | listen_addresses = |
-i | listen_addresses = '*' |
-k | unix_socket_directories = |
-l | ssl = on |
-N | max_connections = |
-O | allow_system_table_mods = on |
-p | port = |
-P | ignore_system_indexes = on |
-s | log_statement_stats = on |
-S | work_mem = |
-tpa, -tpl, -te | log_parser_stats = on,
log_planner_stats = on,
log_executor_stats = on |
-W | post_auth_delay = |