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什么是ping服务？

威海了解搜索引擎威海ping
1733

ping服务是一种网络工具，用于测试网络连接的响应时间和稳定性。它通过向目标主机发送ICMP回显请求并等待回复来测试网络连接。当接收到回复时，ping服务会计算发送和接收之间经过的时间，并显示反馈结果，例如延迟、丢包率和网络传输速度。ping服务通常用于排除网络连接问题，检查服务器可用性和网络速度测试。

Public @ 2023-06-17 16:50:11

内容变更/快照内容错误怎么办？

如果你发现快照中的内容有变更或快照内容错误，请及时向客户服务部反馈。请提供你发现的内容变更/快照内容错误具体信息，帮助我们排查并尽快纠正相关问题，谢谢！

Public @ 2023-02-24 18:27:10

搜索引擎发展历程

搜索引擎是伴随互联网的发展而产生和发展的，互联网已成为人们学习、工作和生活中不可缺少的平台，几乎每个人上网都会使用搜索引擎。搜索引擎大致经历了四代的发展： 1、第一代搜索引擎1994年第一代真正基于互联网的搜索引擎Lycos诞生，它以人工分类目录为主，代表厂商是Yahoo，特点是人工分类存放网站的各种目录，用户通过多种方式寻找网站，现在也还有这种方式存在。 2、第二代搜索引擎

Public @ 2009-09-09 16:22:56

什么是ping服务？

威海了解搜索引擎威海ping
1735

ping服务是一种网络工具，用于测试网络连接的响应时间和稳定性。它通过向目标主机发送ICMP回显请求并等待回复来测试网络连接。当接收到回复时，ping服务会计算发送和接收之间经过的时间，并显示反馈结果，例如延迟、丢包率和网络传输速度。ping服务通常用于排除网络连接问题，检查服务器可用性和网络速度测试。

Public @ 2023-06-17 16:50:11

Linux开启ping

威海服务器/VPS 威海Ping
1755

要在Linux系统中启用ping功能，请执行以下步骤： 1. 打开终端窗口。 2. 使用以下命令检查系统中是否已安装ping： ``` $ which ping ``` 如果ping未安装，则需要使用以下命令来安装： ``` $ sudo apt-get install inetutils-ping ``` 对于其他Linux发行版，请使

Public @ 2023-06-14 14:50:28

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[ DB ] CONNECT:[ UseTime:0.025122s ] mysql:dbname=briline.net;host=106.14.77.182;port=3306;charset=utf8
[ SQL ] SHOW COLUMNS FROM `ob_article` [ RunTime:0.017910s ]
[ SQL ] SELECT * FROM `ob_article` WHERE `id` = 9054 LIMIT 1 [ RunTime:0.016925s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article', 'type' => 'const', 'possible_keys' => 'PRIMARY', 'key' => 'PRIMARY', 'key_len' => '4', 'ref' => 'const', 'rows' => 1, 'extra' => NULL, ) ]
[ SQL ] select * from `ob_article_tongji` where category_id=12 and mark_type='cate' order by times desc limit 15 [ RunTime:0.017593s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article_tongji', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 608, 'extra' => 'Using where; Using filesort', ) ]
[ SQL ] select * from `ob_article_tongji` where category_id=12 and mark_type='tags' order by times desc limit 100 [ RunTime:0.017557s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article_tongji', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 608, 'extra' => 'Using where; Using filesort', ) ]
[ SQL ] select * from `ob_article_tongji` where category_id=12 and mark_type='tags' order by rand() limit 30 [ RunTime:0.018104s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article_tongji', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 608, 'extra' => 'Using where; Using temporary; Using filesort', ) ]
[ SQL ] SELECT * FROM `ob_article` WHERE `id` = 9054 LIMIT 1 [ RunTime:0.017126s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article', 'type' => 'const', 'possible_keys' => 'PRIMARY', 'key' => 'PRIMARY', 'key_len' => '4', 'ref' => 'const', 'rows' => 1, 'extra' => NULL, ) ]
[ SQL ] update `ob_article` set views=views+2 where id=9054 [ RunTime:0.020504s ]
[ SQL ] SELECT COUNT(*) AS tp_count FROM `ob_article` WHERE `category_id` = 12 AND `cate` = '威海了解搜索引擎' AND `status` <> -1 LIMIT 1 [ RunTime:0.024209s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 8035, 'extra' => 'Using where', ) ]
[ SQL ] SELECT * FROM `ob_article` WHERE `category_id` = 12 AND `cate` = '威海了解搜索引擎' AND `status` <> -1 ORDER BY rand() LIMIT 0,2 [ RunTime:0.035718s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 8035, 'extra' => 'Using where; Using temporary; Using filesort', ) ]
[ SQL ] SELECT COUNT(*) AS tp_count FROM `ob_article` WHERE `category_id` = 12 AND `tags` = '威海ping' AND `status` <> -1 LIMIT 1 [ RunTime:0.023573s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 8035, 'extra' => 'Using where', ) ]
[ SQL ] SELECT * FROM `ob_article` WHERE `category_id` = 12 AND `tags` = '威海ping' AND `status` <> -1 ORDER BY rand() LIMIT 0,2 [ RunTime:0.034429s ]
[ EXPLAIN : array ( 'id' => 1, 'select_type' => 'SIMPLE', 'table' => 'ob_article', 'type' => 'ALL', 'possible_keys' => NULL, 'key' => NULL, 'key_len' => NULL, 'ref' => NULL, 'rows' => 8035, 'extra' => 'Using where; Using temporary; Using filesort', ) ]

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