https://blog.youkuaiyun.com/penn902zh-cnhttps://blog.youkuaiyun.com/https://blog.youkuaiyun.com/penn902/article/details/7064403https://blog.youkuaiyun.com/penn902/article/details/7064403penn902Mon, 12 Dec 2011 17:38:22 +0800https://blog.youkuaiyun.com/penn902/article/details/6088804https://blog.youkuaiyun.com/penn902/article/details/6088804penn902Tue, 21 Dec 2010 11:32:00 +0800Scoping operator
Class::age = 2;
none2()
[]
->
.
++
--Grouping operator
Array access
Member access from a pointer
Member access from an object
]]>https://blog.youkuaiyun.com/penn902/article/details/6032649https://blog.youkuaiyun.com/penn902/article/details/6032649penn902Wed, 24 Nov 2010 16:37:00 +08001,$y
    全部复制，不是全选 ；
dG
    删除光标所在行到最后一行的内容（包括光标所在行的内容）；
ggVG
    全选。解释：
          gg 让光标移到首行，在vim才有效，vi中无效；
          V 是进入Visual(可视）模式；
          G 光标移到最后一行；
    选中内容以后就可以其他的操作了，比如：
          d ]]>https://blog.youkuaiyun.com/penn902/article/details/6014079https://blog.youkuaiyun.com/penn902/article/details/6014079penn902Wed, 17 Nov 2010 10:15:00 +0800设有两机，均为局域网，两机可相互通信无问题，中间无防火墙。
两机IP分别为：A:192.168.1.240 B:192.168.1.102
假设A，B机的SSH都允许root登录

设要把 A上的 /root/abc.zip 传到 B机并放到/abc目录，可以在A机上用命令
    scp  /root/abc.zip  root@192.168.1.102:/abc/
若 SSH端口不是默认的22，比如，是端口1234 则加-P参数：]]>https://blog.youkuaiyun.com/penn902/article/details/6011969https://blog.youkuaiyun.com/penn902/article/details/6011969penn902Tue, 16 Nov 2010 11:52:00 +08001. /var/log存放系统日志，包含所有服务的登录的文件或错误信息文件
常用的系统日志如下:
1) /var/log/dmesg: 核心启动日志
2) /var/log/messages: 系统报错日志
3) /var/log/maillog: 邮件系统日志
4) /var/log/xferlog: FTP系统日志
5) /bar/log/secure: 安全信息和系统登录与网络连接的信息
6) /var/log/wtmp]]>https://blog.youkuaiyun.com/penn902/article/details/6011887https://blog.youkuaiyun.com/penn902/article/details/6011887penn902Tue, 16 Nov 2010 11:20:00 +0800比如查找当前目录下面所有的php文件里面的内容

find ./ -name "*.php" | xargs grep '要查找的内容'

如果需要查找的内容包含特殊符号，比如$等等，grep要加参数

find ./ -name "*.php" | xargs grep -F '要查找的内容']]>https://blog.youkuaiyun.com/penn902/article/details/5978771https://blog.youkuaiyun.com/penn902/article/details/5978771penn902Mon, 01 Nov 2010 09:25:00 +0800int ContentCompare::printChildrenNames(xmlNodePtr cur)
{
    //使用非递归遍历
    list listXMLNodePtr;
    xmlNodePtr tempNodePtr;
    listXMLNodePtr.push_back(cur);
    cout << cur->name << " >> " << endl;
   ]]>https://blog.youkuaiyun.com/penn902/article/details/5899912https://blog.youkuaiyun.com/penn902/article/details/5899912penn902Tue, 21 Sep 2010 18:11:00 +0800第一步：df -h   #查看哪个分区有多余的可用空间
第二步：dd  if=/dev/zero  of=【swapfile路径】  bs=1024  count=1000000 #以root身份创建1G的swapfile文件
第三步：mkswap  -v1  swapfile   #将创建的swapfile文件，转换为交换空间
第四步：swapon  swapfile   #将swapfile作为swap空间进行登录
第五步：free   #利用free]]>https://blog.youkuaiyun.com/penn902/article/details/5899086https://blog.youkuaiyun.com/penn902/article/details/5899086penn902Tue, 21 Sep 2010 12:04:00 +0800https://blog.youkuaiyun.com/penn902/article/details/5896570https://blog.youkuaiyun.com/penn902/article/details/5896570penn902Mon, 20 Sep 2010 11:37:00 +0800https://blog.youkuaiyun.com/penn902/article/details/5894814https://blog.youkuaiyun.com/penn902/article/details/5894814penn902Sun, 19 Sep 2010 16:08:00 +0800以日常工作用的那个用户登录，在shell中运行
xhost local:oracle
non-network local connections being added to access control list
然后oracle身份就能运行X程式了。
 
man xhost中有这样一段
       A complete name has the syntax ‘‘family:name’’ where the families a]]>https://blog.youkuaiyun.com/penn902/article/details/5853898https://blog.youkuaiyun.com/penn902/article/details/5853898penn902Tue, 31 Aug 2010 18:19:00 +0800http://www.warpspeed.com.au/cgi-bin/inf2html.cmd?../html/book/Toolkt40/XPG4REF.INF
 cplusplus.com - The C++ Resources Network
http://www.cplusplus.com/]]>https://blog.youkuaiyun.com/penn902/article/details/5844192https://blog.youkuaiyun.com/penn902/article/details/5844192penn902Fri, 27 Aug 2010 17:14:00 +0800https://blog.youkuaiyun.com/penn902/article/details/5837702https://blog.youkuaiyun.com/penn902/article/details/5837702penn902Wed, 25 Aug 2010 15:33:00 +0800https://blog.youkuaiyun.com/penn902/article/details/5834886https://blog.youkuaiyun.com/penn902/article/details/5834886penn902Tue, 24 Aug 2010 15:39:00 +0800https://blog.youkuaiyun.com/penn902/article/details/5833971https://blog.youkuaiyun.com/penn902/article/details/5833971penn902Tue, 24 Aug 2010 10:41:00 +0800https://blog.youkuaiyun.com/penn902/article/details/5833934https://blog.youkuaiyun.com/penn902/article/details/5833934penn902Tue, 24 Aug 2010 10:35:00 +0800https://blog.youkuaiyun.com/penn902/article/details/5746606https://blog.youkuaiyun.com/penn902/article/details/5746606penn902Mon, 19 Jul 2010 15:37:00 +0800磁盘预留空间的实验:
1、首先在要预留空间的分区上使用dd命令生成一个指定大小的文件：
      创建一个10M的文件，名字是foobar：
       # dd if=/dev/zero of=/home/foobar bs=1K count=10000
      In Unix-like operating systems， /dev/zero is a special file that provides as many null charac]]>https://blog.youkuaiyun.com/penn902/article/details/5746244https://blog.youkuaiyun.com/penn902/article/details/5746244penn902Mon, 19 Jul 2010 14:10:00 +0800折腾了好几天，先是oracle客户端连不上虚拟机上的数据库，又是ftp服务和telnet服务不好使，改了几天的配置文件，还是不行，今天同事的一句话：禁用SELINUX和Firewall，总算解决问题了，一切烦恼烟消云散！]]>https://blog.youkuaiyun.com/penn902/article/details/5745440https://blog.youkuaiyun.com/penn902/article/details/5745440penn902Mon, 19 Jul 2010 09:28:00 +0800