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如何在不同编程语言中获取现在的Unix时间戳(Unix timestamp)?JavatimeJavaScriptMath.round(new Date().getTime()/1000) getTime()返回数值的单位是毫秒Microsoft .NET / C#epoch = (DateTime.Now.ToUniversalTime().Ticks - 621355968000000000) / 10000000MySQLSELECT unix_timestamp(now())PerltimePHPtime()PostgreSQLSELECT extract(epoch FROM now 阅读全文
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mysqlndcannotconnecttoMySQL4.1+usingtheoldinsecureauthentication.PleaseuseanadministrationtooltoresetyourpasswordwiththecommandSETPASSWORD=PASSWORD('your_existing_password').Thiswillstoreanew,andmoresecure,hashvalueinmysql.user.IfthisuserisusedinotherscriptsexecutedbyPHP5.2orearlieryoumightn 阅读全文
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1.备份:[root@localhost ~]# mysqldump -u root -p test>/opt/test.sqlEnter password: 使用mysqldump备份, 并将备份文件指向输出目录, 输入密码即可2.还原:先创建要还原的数据库[root@localhost ~]# mysql -u root -pEnter password: Welcome to the MySQL monitor. Commands end with ; or \g.Your MySQL connection id is 8Server version: 5.0.45 Source 阅读全文
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centos下使用yum安装软件时, 出现Error: Cannot find a valid baseurl for repo: base错误解决方法如下(修改dns配置)[root@localhost ~]# yum install vimError: Cannot find a valid baseurl for repo: base[root@localhost ~]# vim /etc/resolv.conf在此文件中最后加入nameserver 8.8.8.8保存后可ping www.baidu.com进行测试 阅读全文