18.16. 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。它们在下面的表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. 短选项关键字

短选项	等效
`-Ax`	`debug_assertions =x`
`-Bx`	`shared_buffers =x`
`-dx`	`log_min_messages = DEBUGx`
`-e`	`datestyle = euro`
`-fb`，`-fh`，`-fi`， `-fm`，`-fn`， `-fs`，`-ft`	`enable_bitmapscan = off`， `enable_hashjoin = off`， `enable_indexscan = off`， `enable_mergejoin = off`， `enable_nestloop = off`， `enable_seqscan = off`， `enable_t idscan = off`
`-F`	`fsync = off`
`-hx`	`listen_addresses =x`
`-i`	`listen_addresses = '*'`
`-kx`	`unix_socket_directory =x`
`-l`	`ssl = on`
`-Nx`	`max_connections =x`
`-O`	`allow_system_table_mods = on`
`-px`	`port =x`
`-P`	`ignore_system_indexes = on`
`-s`	`log_statement_stats = on`
`-Sx`	`work_mem =x`
`-tpa`，`-tpl`，`-te`	`log_parser_stats = on`， `log_planner_stats = on`， `log_executor_stats = on`
`-Wx`	`post_auth_delay =x`