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搭建高可用mongodb集群（一）——配置mongodb - 大数据 & AI - 清泛网 - 专...
.../single/data
#进入mongodb文件夹
cd /data/mongodbtest/single
2、下载mongodb的安装程序包
wget http://fastdl.mongodb.org/linux/mongodb-linux-x86_64-2.4.6.tgz
#解压下载的压缩包
tar xvzf mongodb-linux-x86_64-2.4.6.tgz
#进入mongodb程序执行文件夹
cd mongodb...
记录一些Mac OS X技巧 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...X的鼠标加速度很诡异，缓慢移动鼠标时几乎很难移动。
下载Mouse Acceleration Preference Pane这个配置文件，安装后把Mouse加速度改成负值（如-6）就能关闭加速度。
增强触摸板
默认的触摸板设置并不好用，比如单击鼠标必须把触摸...
How to prevent favicon.ico requests?
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@BT the server or the browser? :D
– Ionuț G. Stan
Jul 4 at 17:02
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linux下iptables配置详解 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...TING -i eth0 -s 192.168.0.0/16 -j DROP
如果我们想,比如阻止MSN,QQ,BT等的话,需要找到它们所用的端口或者IP,(个人认为没有太大必要)
例：
禁止与211.101.46.253的所有连接
[root@tp ~]# iptables -t nat -A PREROUTING -d 211.101.46.253 -j DROP
禁用FT...
Printing all global variables/local variables?
...es of a calling function use select-frame before info locals
E.g.:
(gdb) bt
#0 0xfec3c0b5 in _lwp_kill () from /lib/libc.so.1
#1 0xfec36f39 in thr_kill () from /lib/libc.so.1
#2 0xfebe3603 in raise () from /lib/libc.so.1
#3 0xfebc2961 in abort () from /lib/libc.so.1
#4 0xfebc2bef in _assert_c...
Notifier 通知扩展：功能强大的Android通知管理工具，支持通知通道、意图、...
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Notifier 通知扩展
下载
版本历史
关于通知
关于权限
关于通知通道
关于意图 Intent
关于闹钟 Alarms
关于BackStack（活动堆栈）
使用方法
UrsAI2N...
How can I reverse a NSArray in Objective-C?
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For obtaining a reversed copy of an array, look at danielpunkass' solution using reverseObjectEnumerator.
For reversing a mutable array, you can add the following category to your code:
@implementation NSMutableArray (Reverse)
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How to get IP address of the device from code?
... The code only return first IP, a phone may have celluar, WIFI and BT address at same time
– reker
Jun 14 '18 at 8:04
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Advantage of switch over if-else statement
...ate the same code as a if-else chain, so you don't lose anything. If in doubt put the most common cases first into the switch statement.
In the best case the optimizer may find a better way to generate the code. Common things a compiler does is to build a binary decision tree (saves compares and ju...
How to generate a core dump in Linux on a segmentation fault?
...wered Jan 26 '10 at 13:46
t0mm13bt0mm13b
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