Remove Duplicates

/System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/LaunchServices.framework/Versions/A/Support/lsregister -kill -r -domain local -domain system -domain user  && killall Finder

zythum

王
江
周
胡
刘
李
吴
毛
温
习

jboner

Latency Comparison Numbers (~2012)
----------------------------------
L1 cache reference                           0.5 ns
Branch mispredict                            5   ns
L2 cache reference                           7   ns                      14x L1 cache
Mutex lock/unlock                           25   ns
Main memory reference                      100   ns                      20x L2 cache, 200x L1 cache
Compress 1K bytes with Zippy             3,000   ns        3 us
Send 1K bytes over 1 Gbps network       10,000   ns       10 us
Read 4K randomly from SSD*             150,000   ns      150 us          ~1GB/sec SSD

icleversoft

// App Information
#define AppName                 [[NSBundle mainBundle] objectForInfoDictionaryKey:@"CFBundleName"]
#define AppVersion              [[NSBundle mainBundle] objectForInfoDictionaryKey:@"CFBundleVersion"]
#define AppDelegate(type)       ((type *)[[UIApplication sharedApplication] delegate])
#define NSAppDelegate(type)     ((type *)[[NSApplication sharedApplication] delegate])
#define SharedApp               [UIApplication sharedApplication]
#define NSSharedApp             [NSApplication sharedApplication]
#define Bundle                  [NSBundle mainBundle]
#define MainScreen              [UIScreen mainScreen]

skeeet

#!/bin/sh
# Create a RAM disk with same perms as mountpoint
# Script based on http://itux.idev.pro/2012/04/iservice-speed-up-your-xcode-%D0%BD%D0%B5%D0%BA%D0%BE%D1%82%D0%BE%D1%80%D1%8B%D0%B5-%D1%81%D0%BF%D0%BE%D1%81%D0%BE%D0%B1%D1%8B/ with some additions
# Usage: sudo ./xcode_ramdisk.sh start

USERNAME=$(logname)

TMP_DIR="/private/tmp"
RUN_DIR="/var/run"
SYS_CACHES_DIR="/Library/Caches"

iksky

首先我们来生成公钥文件。Terminal下面输入

ssh-keygen -t rsa

之后在Terminal的提示里按回车。直到生成id_rsa.pub文件，生成的id_rsa.pub文件在 ~/.ssh下面。Terminal下面输入

cd ~/.ssh
cp id_rsa.pub authorized_keys

上面第一句的意思是进入~/.ssh文件夹，第二句是复制id_rsa.pub为authorized_keys文件。