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内核调试神器SystemTap — 探测点与语法(二)
SystemTap脚本主要是由探测点和探测点处理函数组成的,来看下都有哪些探测点可用。 The essential idea behind a systemtap script is to name events, and to give them handlers. Systemtap works by translating the script to C, running the system C compiler to create a kernel module from that. When t...
分类:其他好文   时间:2014-06-07 01:59:08    阅读次数:369
oracle数据库 将秒变为时:分:秒
下列方法只适合在一天之内的秒数 select to_char(trunc(sysdate)+27994/(60*60*24),'hh24:mi:ss') from dual; 结果为:07:46:34...
分类:数据库   时间:2014-06-07 01:50:20    阅读次数:263
projecteuler---->problem=5----Smallest multiple n个数求最小公倍数
title: 2520 is the smallest number that can be divided by each of the numbers from 1 to 10 without any remainder. What is the smallest positive number that is evenly divisible by all of the nu...
分类:其他好文   时间:2014-06-07 01:27:37    阅读次数:229
projecteuler---->problem=4----Largest palindrome product
title: Largest palindrome product Problem 4 A palindromic number reads the same both ways. The largest palindrome made from the product of two 2-digit numbers is 9009 = 91 99. Find the l...
分类:其他好文   时间:2014-06-07 01:24:27    阅读次数:398
CentOS Linux Install Core Development
How do I install all developer tools such as GNU GCC C/C++ compilers, make and others, after installing CentOS from a shell prompt?you can following the nest line do ,install almost all development to...
分类:系统相关   时间:2014-06-07 01:23:47    阅读次数:317
MySQL的一些基本操作
最近开始学习MySQL,主要是通过书籍,和看燕十八老师的视频,然后通过博客记录自己的学习过程。 登入数据库 zhiniaobu@telunsu-K55VD:~$ mysql -uroot -p Enter password: 查看当前所有数据库mysql> show databases;#查看当前所有数据库 +--------------------+ | Database ...
分类:数据库   时间:2014-06-05 10:50:28    阅读次数:284
LeetCode: Search a 2D Matrix [074]
【题目】 Write an efficient algorithm that searches for a value in an m x n matrix. This matrix has the following properties: Integers in each row are sorted from left to right. The first integer of each row is greater than the last integer of the previous ...
分类:其他好文   时间:2014-06-05 08:28:43    阅读次数:321
OpenCV视频序列操作基础
?? 从视频序列中抓取一帧 OpenCV支持从摄像头或视频文件(AVI)中抓取图像.从摄像头获取初始化: CvCapture* capture = cvCaptureFromCAM(0); // capture from video device #0 从视频文件获取初始化: CvCapture* capture = cvCaptureFromAVI("infile.avi");...
分类:其他好文   时间:2014-06-05 06:06:49    阅读次数:196
SSI事务问题
搭建SSI框架,使用编程式事务,怎么执行都报错 信息: Loading XML bean definitions from class path resource [org/springframework/jdbc/support/sql-error-codes.xml] 2014-5-28 17:07:32 org.springframework.jdbc.support.SQLErro...
分类:其他好文   时间:2014-06-05 06:06:15    阅读次数:334
Oracle purge 用法介绍
1、用途:   清除oracle 回收站(recyclebin)中的表和索引并释放与其相关的空间,还可清空回收站,或者清除表空间中记录的已删除的部分表空间。       注意:purge后不能回滚和恢复。 2、语法:       3、示例说明:    1)首先查一下回收站:    SELECT * FROM RECYCLEBIN;    2)创建并删...
分类:数据库   时间:2014-06-05 05:58:46    阅读次数:281
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