{"id":401,"date":"2023-04-08T21:12:19","date_gmt":"2023-04-08T13:12:19","guid":{"rendered":"https:\/\/yajtech.synology.me\/wordpress\/?p=401"},"modified":"2023-04-08T21:18:15","modified_gmt":"2023-04-08T13:18:15","slug":"logread","status":"publish","type":"post","link":"https:\/\/www.yaj.com.tw\/wordpress\/?p=401","title":{"rendered":"syslog"},"content":{"rendered":"\n<pre class=\"wp-block-code\"><code>\u5f9e\u547d\u4ee4\u6a21\u5f0f\u4e0b\uff0c\u5373\u6642\u67e5\u770b\u7576\u524d\u7684log\nlogread -f<\/code><\/pre>\n\n\n\n<p>C \u7a0b\u5f0f\u5b9a\u7fa9<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>#include &lt;syslog.h>\r\n\r\n\/\/ #define DEBUG\r\n\r\n#ifdef DEBUG\r\n#define log(fmt, args...)  \\\r\nprintf(\"&#91;%s](%d)\" fmt , __func__, __LINE__, ## args)\r\n\r\n#define logerr log\r\n#define loginfo log\r\n#else\r\n#define log(fmt, args...)  \\\r\nsyslog(LOG_NOTICE|LOG_USER,\"&#91;%s](%d)\" fmt , __func__, __LINE__, ## args)\r\n\r\n#define logerr(fmt, args...)  \\\r\nsyslog(LOG_ERR|LOG_USER,\"&#91;%s](%d)\" fmt , __func__, __LINE__, ## args)\r\n\r\n#define loginfo(fmt, args...)  \\\r\nsyslog(LOG_INFO|LOG_USER,\"&#91;%s](%d)\" fmt , __func__, __LINE__, ## args)\r\n#endif<\/code><\/pre>\n\n\n\n<p>\u53c3\u8003\u8cc7\u6599<\/p>\n\n\n\n<p><a href=\"https:\/\/www.codetd.com\/article\/12239899\">https:\/\/www.codetd.com\/article\/12239899<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>C \u7a0b\u5f0f\u5b9a\u7fa9 \u53c3\u8003\u8cc7\u6599 https:\/\/www.codetd.com\/article\/12239899<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[17,9],"class_list":["post-401","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-linux","tag-openwrt"],"_links":{"self":[{"href":"https:\/\/www.yaj.com.tw\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/401","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.yaj.com.tw\/wordpress\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.yaj.com.tw\/wordpress\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.yaj.com.tw\/wordpress\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.yaj.com.tw\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=401"}],"version-history":[{"count":3,"href":"https:\/\/www.yaj.com.tw\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/401\/revisions"}],"predecessor-version":[{"id":406,"href":"https:\/\/www.yaj.com.tw\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/401\/revisions\/406"}],"wp:attachment":[{"href":"https:\/\/www.yaj.com.tw\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=401"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.yaj.com.tw\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=401"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.yaj.com.tw\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=401"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}