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我刚刚删除了 ruby​​ 1.9.1 并安装了 1.8.7,但是当我寻找 rails 时,我的 bash 仍然指向 1.9.1。

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]

任何人都可以帮忙吗?如何让 bash 看 1.8.7?

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1 回答 1

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你的红宝石已经很老了(从本周开始,正式弃用)。您的 gem 安装在/usr/local/bin.

你可能想看看rbenv

这可能会立即解决您的问题


设置完 rbenv后,我像这样编译我的红宝石

# 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

现在让我们使用它!

# 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]

现在让我们rails开始吧

# install rails
gem install rails

# check the version
rails --version
Rails 4.0.0
于 2013-07-12T21:10:46.907 回答