pod --version看一下版本。

pod trunk register your email 'your name'

pod trunk me    

pod spec lint your.podspec

pod trunk push your.podspec

pod search yourpod

about:config
security.ssl3.dhe_rsa_aes_128_sha = false
security.ssl3.dhe_rsa_aes_256_sha = false

sudo xcode-select -switch /Applications/Xcode.app/Contents/Developer
xcodebuild -license
cd /Applications/Xcode.app/Contents/Developer/usr/bin/
sudo ln -s xcodebuild xcrun

//install jq
sudo port install jq
//sudo port install py27-yaml
sudo python -m easy_install pyyaml
//parse json by command
cat jsonfile |jq  '.list[0].name'
//convert yaml to json
python -c 'import sys, yaml, json; json.dump(yaml.load(sys.stdin), sys.stdout, indent=4)' < file.yaml > file.json

${varible##*string} 从左向右截取最后一个string后的字符串
${varible#*string}从左向右截取第一个string后的字符串
${varible%%string*}从右向左截取最后一个string后的字符串
${varible%string*}从右向左截取第一个string后的字符串

sudo rm -rf /Library/Frameworks/CarthageKit.framework
sudo rm -rf /usr/local/bin/carthage

gem install xcode-install
xcversion simulators --install='iOS 9.3'

sudo apt-get -y install pppoeconf
//设置帐号密码，其它的默认
sudo pppoeconf

sudo apt-get update
sudo apt-get install iceweasel