Ubuntu下控制台输入sudo apt-get update之后出现的问题:E: Could not get lock /var/lib/apt/lists/lock - open (11: Resource temporarily unavailable)E: Unable to lock directory /var/lib/apt/lists/E: Could not get lock /var/lib/dpkg/lock - open (11: Resource temporarily
对于错误 GPG error: http://ppa.launchpad.net precise Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY B70731143DD9F856 可以通过以下方式解决 sudo apt-get clean sudo mv /var/lib/apt/lists /tmp sudo mkdir -p /v
尝试用RVM升级Ruby http://blog.csdn.net/lissdy/article/details/9191351 如果碰到下面问题 Searching for binary rubies, this might take some time. No binary rubies available for: osx/10.11/x86_64/ruby-2.2.4. Continuing with compilation. Please read 'rvm help mount' t