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Socket send函数和recv函数详解以及利用select()函数来进行指定时间的阻塞 ...
...有情况下，发送开始调用是局部的：无论其它进程的状态如何，它立刻返回。如果这个调用使得一些系统资源用完，那么它将失败并返回 一个错误代码。高质量的MPI实现应保证这种情况只在“病态”时发生。即，一个MPI实现将...
How to show first commit by 'git log'?
... answer was posted.)
Explanation
Technically, there may be more than one root commit. This happens when multiple previously independent histories are merged together. It is common when a project is integrated via a subtree merge.
The git.git repository has six root commits in its history graph (o...
Why should I capitalize my SQL keywords? [duplicate]
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So does MySQL, and for good and for bad (mostly bad:-), many developers first exposure to SQL is through MySQL.
– Paul Tomblin
Mar 4 '09 at 13:41
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How to install python modules without root access?
...asy_install to install python packages in your home directory even without root access. There's a standard way to do this using site.USER_BASE which defaults to something like $HOME/.local or $HOME/Library/Python/2.7/bin and is included by default on the PYTHONPATH
To do this, create a .pydistutils...
Database Structure for Tree Data Structure
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Have a look at Managing Hierarchical Data in MySQL. It discusses two approaches for storing and managing hierarchical (tree-like) data in a relational database.
The first approach is the adjacency list model, which is what you essentially describe: having a foreign key...
How do I create a crontab through a script
...moving existing crontab entries and also I needed to use a different user (root) so I used the following to maintain the existing entries: echo -e "$(sudo crontab -u root -l)\n* * * * * echo hello > /home/danny/temp.log 2>&1" | sudo crontab -u root - Hopefully this helps someone
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How do I insert datetime value into a SQLite database?
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Use CURRENT_TIMESTAMP when you need it, instead OF NOW() (which is MySQL)
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PHP mail function doesn't complete sending of e-mail
...g is enabled and set to report all errors
Error reporting is essential to rooting out bugs in your code and general errors that PHP encounters. Error reporting needs to be enabled to receive these errors. Placing the following code at the top of your PHP files (or in a master configuration file) wi...
Count number of files within a directory in Linux? [closed]
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An effective native way without using pipe: du --inodes [root@cs-1-server-01 million]# du --inodes 1000001 ./vdb.1_1.dir 1000003 . [root@cs-1-server-01 million]#
– Venfah Nazir
Jan 9 at 7:28
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修改centos字符集导致桌面进不去的一系列问题 - 更多技术 - 清泛网 - 专注C...
...集请参看 http://user.qzone.qq.com/58740020/blog/1407983208
修改
[root@centos ~]# vi /etc/sysconfig/i18n
发现在终端下ORALCE 可以正常显示汉字
但是centos 不能正常登陆桌面系统，必须手动选择 汉字（中国选项）
但是进入桌面还是UTF-8
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