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Linux 网卡速率（百兆/千兆）的查看及调整 - 操作系统(内核) - 清泛网 - 专...
...et/{ethXXX}/speed #查看某网卡的速率(MB)（百兆or千兆等）
ip -d link #查看网卡工作状态：UP -启用；DOWN -未启用
ethtool -s {ethXXX} [speed 10|100|1000] #设置网卡速率为10M/100M/1000M
注：上述命令仅限于物理机查看，虚拟机无效，虚拟机...
Linux修改主机名（不过需谨慎！） - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
...说修改主机名需要谨慎？
Linux主机名的重要性几乎就和 IP地址等同了，因此部分程序的工作会依赖主机名，有些机器重启就能自动切换新的主机名，但是还有一些比如编译期间指定了旧的主机名，改名后有可能会无法工作，笔...
【持续更新】App Inventor 2 中文拓展一览 - App Inventor 2 中文网 - 清泛...
...项目文件中提取.aix拓展包
中文网拓展
【剪贴板】 Clipboard 拓展：实现剪贴板的复制粘贴功能
【短信平台接入】 AliSms 拓展：阿里云短信平台接入，短信验证码
【设备信息】 PhoneInfo 拓展：获取手机等设备软硬件、版本等...
Linux下安装项目管理工具Redmine - 开源 & Github - 清泛网 - 专注C/C++及内核技术
...My account里可以修改成其它语言。
启动WEB服务
# ruby script/server webrick -e production
或# ruby /usr/local/redmine/script/server webrick -e production
停止web服务方法：在当前启动窗口按ctrl+C
访问http://ip:3000/
初始用户名/密码：admin/admin
这...
Convert list to array in Java [duplicate]
...llection to an array: either using
a pre-sized array (like c.toArray(new String[c.size()])) or
using an empty array (like c.toArray(new String[0]). In
older Java versions using pre-sized array was recommended, as the
reflection call which is necessary to create an array of proper size
...
How do you query for “is not null” in Mongo?
...roposition:
db.collection_name.find({"field_name":{$type:2}}) //type:2 == String
You can check on the required attribute's type, it will return all the documents that its field_name queried contains a value because you are checking on the filed's type else if it is null the type condition doesn't...
Can a class member function template be virtual?
...using MinGW G++ 3.4.5 on Window 7:
#include <iostream>
#include <string>
using namespace std;
template <typename T>
class A{
public:
virtual void func1(const T& p)
{
cout<<"A:"<<p<<endl;
}
};
template <typename T>
class B
: public...
PowerShell script to return versions of .NET Framework on a machine?
...le by looking for unique lines that start with ".NET Framework"
Select-String "^.NET" | Select-Object -Unique |
# And flip it so it's key = value
# And convert ".NET FRAMEWORK 4.5.2" to [version]4.5.2
ForEach-Object {
[version]$v, [int]$k = $_ -replace "\.NET Framework " -s...
How do I work around JavaScript's parseInt octal behavior?
...
@Grodriguez, and when 0 in |0 is a string?
– Oleg V. Volkov
Oct 24 '14 at 16:29
...
Difference between 'struct' and 'typedef struct' in C++?
...hat C++
generates a typedef for every tag
name, such as
typedef class string string;
Unfortunately, this is not entirely
accurate. I wish it were that simple,
but it's not. C++ can't generate such
typedefs for structs, unions, or enums
without introducing incompatibilities
with ...