I just deleted ruby 1.9.1 and installed 1.8.7, but my bash still points at 1.9.1 for when I look for rails.
emai@vpc-db:~$ rails --version
bash: /usr/local/bin/rails: /usr/bin/ruby1.9.1: bad interpreter: No such file or directory
emai@vpc-db:~$ ruby --version
ruby 1.8.7 (2011-06-30 patchlevel 352) [x86_64-linux]
Can anyone help? How do I make bash look at 1.8.7?
Your ruby is pretty old (and as of this week, officially deprecated). It's also really weird that your gems are installed in /usr/local/bin.
You might want to look into rbenv
This will probably clean up your issue right away
After you have rbenv setup, I compile my rubies like this
# start in your home directory
cd $HOME
# make a src folder for compiling ruby
mkdir -p .src && cd .src
# download ruby
curl -O ftp://ftp.ruby-lang.org/pub/ruby/2.0/ruby-2.0.0-p247.tar.gz
# extract compressed file
tar -xzf ruby-2.0.0-p247.tar.gz
# cd to folder
cd ruby-2.0.0-p247
# configure
./configure --prefix=$HOME/.rbenv/versions/2.0.0-p247 --with-opt-dir=/path/to/openssl --enable-shared
# make and install
make && make install
# cleanup
rm -rf ruby-2.0.0-p247
Now let's use it!
# make rbenv aware of our new rubies
rbenv rehash
# set our new version as the default
rbenv global 2.0.0-p247
# let's check it out!
ruby --version
ruby 2.0.0p247 (2013-06-27 revision 41674) [x86_64-darwin12.3.0]
Now let's get that rails going
# install rails
gem install rails
# check the version
rails --version
Rails 4.0.0
