问题
This is probably a type of "is it plugged in?" question, but after getting a default Rackspace image of Ubuntu 11.04 up. Running command (as root)
apt-get install rake
Fails with error
Reading package lists... Done
Building dependency tree
Reading state information... Done
E: Unable to locate package rake
I'm missing something simple I'm sure.
回答1:
It appears that rake package is not in the 11.04 sources, but it is in 10.10 sources.
To get apt-get install rake to work on 11.04:
Add the following lines to /etc/apt/sources.list
deb http://archive.ubuntu.com/ubuntu/ maverick main restricted universe
deb-src http://archive.ubuntu.com/ubuntu/ maverick main restricted universe
Update package listing
apt-get update
Now rake should be available:
apt-get install rake
回答2:
Try gem install rake
It may be better to use rvm than Ubuntu's Ruby and Gem.
来源：https://stackoverflow.com/questions/8386794/ubuntu-11-04-apt-get-install-rake-e-unable-to-locate-package-rake