18.18. 短选项

为了方便起见，这里还为一些参数提供了好多单字母命令行选项开关。它们在下面的Table 18-2里描述。其中一些选项仅仅是因为历史原因而存在的，尽管它们是单字母选项，但是并不表示它们很常用。

Table 18-2. 短选项键字

短选项	等效
`-A` `_x_`	`debug_assertions =` `_x_`
`-B` `_x_`	`shared_buffers =` `_x_`
`-d` `_x_`	log_min_messages = DEBUG``_x_
`-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_`