我是Linux的新手，我很难尝试这项工作。
我卸载并安装了几次gcc。现在，当我运行gcc --version时，它仍然显示zsh: command not found。
当我转到/usr/local/bin并运行ls -l时，我发现了多个版本的gcc
lrwxr-xr-x 1 ps032791 admin 33 Jul 2 2014 c++-4.6 -> ../Cellar/gcc46/4.6.4/bin/c++-4.6
lrwxr-xr-x 1 ps032791 admin 33 Apr 6 11:58 c++-4.7 -> ../Cellar/gcc47/4.7.3/bin/c++-4.7
lrwxr-xr-x 1 ps032791 admin 33 Apr 6 15:27 c++-4.8 -> ../Cellar/gcc/4.8.3_1/bin/c++-4.8
lrwxr-xr-x 1 ps032791 admin 32 Apr 6 15:19 cloog -> ../Cellar/cloog/0.18.1/bin/cloog
lrwxr-xr-x 1 ps032791 admin 33 Jul 2 2014 cpp-4.6 -> ../Cellar/gcc46/4.6.4/bin/cpp-4.6
lrwxr-xr-x 1 ps032791 admin 33 Apr 6 11:58 cpp-4.7 -> ../Cellar/gcc47/4.7.3/bin/cpp-4.7
lrwxr-xr-x 1 ps032791 admin 33 Apr 6 15:27 cpp-4.8 -> ../Cellar/gcc/4.8.3_1/bin/cpp-4.8
lrwxr-xr-x 1 ps032791 admin 28 May 29 2014 erb -> ../Cellar/ruby/2.1.2/bin/erb
lrwxr-xr-x 1 ps032791 admin 33 Jul 2 2014 g++-4.6 -> ../Cellar/gcc46/4.6.4/bin/g++-4.6
lrwxr-xr-x 1 ps032791 admin 33 Apr 6 11:58 g++-4.7 -> ../Cellar/gcc47/4.7.3/bin/g++-4.7
lrwxr-xr-x 1 ps032791 admin 33 Apr 6 15:27 g++-4.8 -> ../Cellar/gcc/4.8.3_1/bin/g++-4.8
-rw-r--r-- 1 ps032791 admin 0 Apr 6 13:23 gcc-4.2
lrwxr-xr-x 1 ps032791 admin 33 Jul 2 2014 gcc-4.6 -> ../Cellar/gcc46/4.6.4/bin/gcc-4.6
lrwxr-xr-x 1 ps032791 admin 33 Apr 6 11:58 gcc-4.7 -> ../Cellar/gcc47/4.7.3/bin/gcc-4.7
lrwxr-xr-x 1 ps032791 admin 33 Apr 6 15:27 gcc-4.8 -> ../Cellar/gcc/4.8.3_1/bin/gcc-4.8
lrwxr-xr-x 1 ps032791 admin 36 Apr 6 11:58 gcc-ar-4.7 -> ../Cellar/gcc47/4.7.3/bin/gcc-ar-4.7
lrwxr-xr-x 1 ps032791 admin 36 Apr 6 15:27 gcc-ar-4.8 -> ../Cellar/gcc/4.8.3_1/bin/gcc-ar-4.8
lrwxr-xr-x 1 ps032791 admin 36 Apr 6 11:58 gcc-nm-4.7 -> ../Cellar/gcc47/4.7.3/bin/gcc-nm-4.7
lrwxr-xr-x 1 ps032791 admin 36 Apr 6 15:27 gcc-nm-4.8 -> ../Cellar/gcc/4.8.3_1/bin/gcc-nm-4.8
lrwxr-xr-x 1 ps032791 admin 40 Apr 6 11:58 gcc-ranlib-4.7 -> ../Cellar/gcc47/4.7.3/bin/gcc-ranlib-4.7
lrwxr-xr-x 1 ps032791 admin 40 Apr 6 15:27 gcc-ranlib-4.8 -> ../Cellar/gcc/4.8.3_1/bin/gcc-ranlib-4.8
我跑了＆＃39; brew doctor＆＃39;，我得到以下输出，
Warning: You have MacPorts or Fink installed:
/opt/local/bin/port
This can cause trouble. You don't have to uninstall them, but you may want to
temporarily move them out of the way, e.g.
sudo mv /opt/local ~/macports
Warning: Your Homebrew is outdated.
You haven't updated for at least 24 hours, this is a long time in brewland!
To update Homebrew, run `brew update`.
Warning: You have unlinked kegs in your Cellar
Leaving kegs unlinked can lead to build-trouble and cause brews that depend on
those kegs to fail to run properly once built. Run `brew link` on these:
gcc48
Warning: You have uncommitted modifications to Homebrew
If this a surprise to you, then you should stash these modifications.
Stashing returns Homebrew to a pristine state but can be undone
should you later need to do so for some reason.
cd /usr/local/Library && git stash && git clean -d -f
Warning: /usr/bin occurs before /usr/local/bin
This means that system-provided programs will be used instead of those
provided by Homebrew. The following tools exist at both paths:
erb
gem
git
git-cvsserver
git-receive-pack
git-shell
git-upload-archive
git-upload-pack
irb
rake
rdoc
ri
ruby
testrb
Consider setting your PATH so that /usr/local/bin
occurs before /usr/bin. Here is a one-liner:
echo export PATH='/usr/local/bin:$PATH' >> ~/.bash_profile
我尝试运行echo export PATH='/usr/local/bin:$PATH' >> ~/.bash_profile，重新启动终端并再次运行brew doctor，它仍然抱怨同样的事情。我完全迷失在这里。有人可以指导我吗？我究竟做错了什么？提前谢谢。
答案 0 :(得分：1)
您没有配置正确的配置文件。看看这个：
https://wiki.archlinux.org/index.php/Zsh#Configuring_.24PATH
检查gcc是否安装正确：
brew install gcc
brew link gcc48
为创建的任何链接创建别名，并将其放入.zshrc
cd /usr/local/bin
ls cpp*
ls c++*
alias gcc=/usr/local/bin/<whatever_link_you_found>