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大数据:用数据指导APP运营 - 资讯 - 清泛网 - 专注C/C++及内核技术
...是一个单一的行为。
4 如何分析数据
对于数据的解读,每个人都有不同的方式。如果我们要简单的总结,数据分析的方法,无非是:
1)确定数据的准确性
这里包含了选择数据维度的合理性、数据统计的准确性。如果数据维...
How do I execute any command editing its file (argument) “in place” using bash?
... sponge(1), which lets you do things like this:
% sed "s/root/toor/" /etc/passwd | grep -v joey | sponge /etc/passwd
However, sponge suffers from the same problem Steve Jessop comments on here. If any of the commands in the pipeline before sponge fail, then the original file will be written over...
Command to change the default home directory of a user
... default login shell of an existing valid user) without touching the /etc/passwd file. Thanks
6 Answers
...
Hiding a password in a python script (insecure obfuscation only)
...eant that you would code a feature like this and add the ability to read a passwd from a file
– Martin Beckett
Dec 10 '15 at 22:42
...
MySQL “incorrect string value” error when save unicode string in Django
... automatically.
#! /usr/bin/env python
import MySQLdb
host = "localhost"
passwd = "passwd"
user = "youruser"
dbname = "yourdbname"
db = MySQLdb.connect(host=host, user=user, passwd=passwd, db=dbname)
cursor = db.cursor()
cursor.execute("ALTER DATABASE `%s` CHARACTER SET 'utf8' COLLATE 'utf8_unic...
Smarty中date_format日期格式化详解 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...给定的时间值为 `am' 或 `pm',或者当前区域设置中的相应字符串
%r - 用 a.m. 和 p.m. 符号的时间
%R - 24 小时符号的时间
%S - 十进制秒数
%t - 制表符
%T - 当前时间,和 %H:%M:%S 一样
%u - 星期几的十进制数表达 [1,7],1 表示星期一
%U...
linux 下巧妙使用squid代理服务器 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...性在于它使用访问控制列表(ACL)和访问权限列表(ARL)进行权限管理和内容过滤。访问控制清单和访问权限清单通过阻止特定的网络连接来减少潜在的Internet非法连接,可以使用这些清单来确保内部网的主机无法访问有威胁的...
Linux MySql编译安装 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...ENTIFIED BY 'some_pass';#some_pass就是ryan帐户密码
#对用户ryan进行授权,当然你最好不要这么做
GRANT ALL PRIVILEGES ON *.* TO 'ryan'@'%' IDENTIFIED BY 'some_pass' WITH GRANT OPTION;
#刷新权限
flush privileges;
#修改默认的引擎
set global storage_engin...
Python: How would you save a simple settings/config file?
...host:::localhost:::<type 'str'>
x user:::root:::<type 'str'>
x passwd:::my secret password:::<type 'str'>
x db:::write-math:::<type 'str'>
Section: other
x preprocessing_queue:::["preprocessing.scale_and_center",
"preprocessing.dot_reduction",
"preprocessing.connect_lines"]::...
Rails: FATAL - Peer authentication failed for user (PG::Error)
...t know what your postgres user's password is? Change it like this:
1) Run passwd as a superuser:
$ sudo passwd postgres
2) Enter your accounts password for sudo (nothing to do with postgres):
[sudo] password for starkers: myaccountpassword
3) Create the postgres account's new passwod:
Enter ...