继续分析：
/* * Make the per-database PG_VERSION for template1 only after init'ing it */ write_version_file("base/1");
就是在base/1目录下，生成一个 PG_VERSION 文件。
[pgsql@localhost 1]$ pwd /home/pgsql/DemoDir/base/1 [pgsql@localhost 1]$ cat PG_VERSION 9.1 [pgsql@localhost 1]$
接下来：
/* Create the stuff we don't need to use bootstrap mode for */ setup_auth();
展开后看：
/* * set up the shadow password table */ static void setup_auth(void) { PG_CMD_DECL; const char **line; static const char *pg_authid_setup[] = { /* * The authid table shouldn't be readable except through views, to * ensure passwords are not publicly visible. */ "REVOKE ALL on pg_authid FROM public;\n", NULL }; fputs(_("initializing pg_authid ... "), stdout); fflush(stdout); snprintf(cmd, sizeof(cmd), "\"%s\" %s template1 >%s", backend_exec, backend_options, DEVNULL); PG_CMD_OPEN; for (line = pg_authid_setup; *line != NULL; line++) PG_CMD_PUTS(*line); PG_CMD_CLOSE; check_ok(); }
此时，得到的cmd 是：
/home/pgsql/project/bin/postgres" --single -F -O -c search_path=pg_catalog -c exit_on_error=true template1 >/dev/null
然后再把 pg_authid_setup[] 里的内容送到 postgres里去执行。此处是 ”REVOKE ALL on pg_authid FROM public;”
本文转自健哥的数据花园博客园博客，原文链接：http://www.cnblogs.com/gaojian/p/3178272.html，如需转载请自行联系原作者
