摘要：问：It appears from the database error "could not open extension control file" while trying to CREATE EXTENSION [...] hstore that the extension hstore is not installed.On Ubuntu, you can install the extension by installing the postgresql-contrib package.答：sudo apt-get install postgresql-cont 阅读全文

摘要：$ git config --global user.name "Your Name"$ git config --global user.email your.email@example.com$ git config --global credential.helper 'cache --timeout=3600" cache 密码$ git init关于ignore文件添加$ git add .$ git commit -m "Initial commit"$ git status$ git checkout -f -f强制覆盖当 阅读全文

摘要：各种bug，也算是吐血整理了，菜鸟一只。 主要参照：http://guides.ruby-china.org/getting_started.html。好东西。 1.安装rvm 这个版本下rvm是坏的，必须要修理：sudo apt-get --purge remove ruby-rvmsudo rm -rf /usr/share/ruby-rvm /etc/rvmrc /etc/profile.d/rvm.shopen new terminal and validate environment is clean from old RVM settings (shoul... 阅读全文