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server.py:import socketdef main(): host = '127.0.0.1' port = 5000 server_socket = socket.socket() server_socket.bind((host, port)) serv
#apr cd /tmp/upgrade/ tar zxvf apr-1.4.8.tar.gz cd apr-1.4.8 ./configure --prefix=/apache/apr make && make install#apr-util cd .. tar zxvf apr-util-1.5
使用deque(maxlen=N)构造函数会新建一个固定大小的队列.当新的元素加入并且这个队列已满的时候,最老的元素会被移除掉.在队列两端插入或者删除元素时间复杂度都是O(1), 而在列表的开头插入或删除元素的时间复杂度为O(N).当要查找的元素个数相对比较小的时候,函数 nlargest() 和 nsmallest() 是很合适的。 如果你仅仅想查找唯一的
4. More Control Flow ToolsLoop statements may have an else clause; it is executed when the loop terminates through exhaustion of the list (with for) or when the condition becomes false
All database options are stored in a text file named db.opt that can be found in the database directory.
$ export FLASK_APP=hello.py $ flask run --host=0.0.0.0 * Running on http://127.0.0.1:5000/$ export FLASK_APP=hello.py $ python -m flask
tar xf mysql-5.5.49.tar.gzcd mysql-5.5.49cmake -DCMAKE_INSTALL_PREFIX=/webapp/marlonm/mysql5.5.49 .makemake installcd /webapp/marlonm/mysql5.5.49scripts/mysql_install_db --user=marlonmnohup bin/mysqld
1) Dictionaries have a method called get that takes a key and a default value. LookupError is a built-in exception used to indicate that a lookup operation failed. raise Lookup
1) mysite/wsgi.py:用于你的项目的与WSGI兼容的Web服务器入口。2) migrate查看INSTALLED_APPS设置并根据mysite/settings.py文件中的数据库设置创建任何必要的数据库表,数据库的迁移还会跟踪应用的变化。你会看到对每次迁移有一条信息。如果你有兴趣,可以运行你的数据库的命令行客户端并输入dt (PostgreSQL), 
git reset --hard HEAD^git reflogGit的版本库里存了很多东西,其中最重要的就是称为stage(或者叫index)的暂存区,还有Git为我们自动创建的第一个分支master,以及指向master的一个指针叫HEAD。
1) Install Dependencies sudo yum install yum install curl-devel expat-devel gettext-devel openssl-devel zlib-devel xmlto texinfo # asciido
Original URL: http://aboredcoder.com/post/how_to_hide_a_processes_from_other_users_in_linux If you're using the Linux kernel versions 3.2 or above you can hide processes from other users so only
1, cache确认保证squid不对用户返回过时数据。在重复使用缓存对象时,squid经常从原始服务器确认它。假如服务器指示squid的拷贝仍然有效,数据就发送出去。否则,squid升级它的缓存拷贝,并且转发给客户。2, echo "1024 40000" > /proc/sys/net/ipv4/ip_local_port_range3, ./configure --localstate
1, shell var$ word=world$ echo hello | awk '{ print $1,$word; }' # Both are treated as awk variables, so it &n
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