xcode 6 command line tools 装了没?

1楼 @liprais 还有Xcode 5,目前Command line tools选的是Xcode 5的

2楼 @tinyfool 啊,主题有写,我没看见. 然后我的10.9上也没有这个文件,所以就不知道怎么回事了 在osx上用ruby 建议用rvm,链接在这里: http://rvm.io

3楼 @liprais 没有,你问了以后我才更新到主题上的。

话说RVM专门是为了解决这类版本混乱问题出现的么?

建议用 RVM 或者 rbenv,这两者安装 gem 都是无需 sudo 的,ruby 版本和 gemset 也比较好控制。

5楼 @xuan_lengyue RVM安装了,但是还是有点问题,我感觉是我机器上面有不同的ruby,然后混乱了

使用RVM安装发现了新的问题

Error running 'requirements_osx_brew_update_system ruby-2.1.2',
showing last 15 lines of /Users/tinyfool/.rvm/log/1402459044_ruby-2.1.2/update_system.log
 https://github.com/Homebrew/homebrew/wiki/Common-Issues
and make sure `brew update` works before continuing.'
++ rvm_pretty_print stderr
++ case "${rvm_pretty_print_flag:=auto}" in
++ case "${TERM:-dumb}" in
++ case "1ドル" in
++ [[ -t 2 ]]
++ return 1
++ printf %b 'Failed to update Homebrew, follow instructions here:
 https://github.com/Homebrew/homebrew/wiki/Common-Issues
and make sure `brew update` works before continuing.n'
Failed to update Homebrew, follow instructions here:
 https://github.com/Homebrew/homebrew/wiki/Common-Issues
and make sure `brew update` works before continuing.
++ return 1
Requirements installation failed with status: 1.

但是brew update也报错,唉,简直就是俄罗斯套娃错误啊

brew update
/usr/local/bin/brew: /usr/local/Library/brew.rb: /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/bin/ruby: bad interpreter: No such file or directory
/usr/local/bin/brew: line 21: /usr/local/Library/brew.rb: Undefined error: 0

搜到了这个 https://gist.github.com/chrisb/4d6a09c6cc1ca2e1b14e 目测是因为homebrew 还在用ruby 1.8而10.10上没有1.8导致的问题...总之还是要装xcode 6 command line tools

8楼 @tinyfool Yosemite的ruby是2.0,把1.8改成Current或者2.0就能用,或者ln一个1.8... 还有别的文件有可能要改