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
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
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
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
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
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
【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
??
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
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
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