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史上最完整的CentOS 6平臺安裝YouCompleteMe教程,沒有之一!
Ubuntu/Debian/Fedora比較好安裝,各種軟件包都比較新
CentOS6系列很難裝,各種軟件包版本太低了
新手不要嘗試在CentOS6系上安裝,會有一種挫敗感!
Linux系統不是CentOS 6系列 的少年， 請不要再往下看了。
閱讀本文之前,我假設你知道什么是YouCompleteMe, 什么是C/C++語法補全.
好了,沒什么廢話可以再繼續往下說的了,擼起袖子開始搞!
======================================================
步驟:
1, 安裝操作系統
2, 文件下載
3, 更新vim
4, 安裝ycm 和 Vundle
5, 編譯clang
6, 編譯ycm_core
7, 效果圖
8, 清理工作
1, 安裝操作系統:
#CentOS-6.5 基于Basic Server安裝 http://archive.kernel.org/centos-vault/6.5/isos/i386/CentOS-6.5-i386-bin-DVD1.iso http://archive.kernel.org/centos-vault/6.5/isos/x86_64/CentOS-6.5-x86_64-bin-DVD1.iso #我習慣盡量不使用root權限,創建普通用戶 [root@CentOS ~]# useradd chunli [root@CentOS ~]# passwd chunli [root@CentOS ~]# vim /etc/sudoers chunli ALL=(ALL) ALL [root@CentOS ~]# logout chunli@ubuntu ~ ssh chunli@11.11.11.4 Last login: Tue Mar 7 06:58:18 2017 from chunli-pc [chunli@CentOS ~]$
2, 文件下載
[chunli@CentOS ~]$ wget --no-check-certificate https://cmake.org/files/v3.8/cmake-3.8.0-rc2.tar.gz [chunli@CentOS ~]$ wget --no-check-certificate https://www.python.org/ftp/python/2.7.13/Python-2.7.13.tar.xz [chunli@CentOS ~]$ wget ftp://ftp.gnu.org/gnu/gcc/gcc-6.3.0/gcc-6.3.0.tar.bz2 2017.03.11 寫博客時,最新的llvm還是3.9.1, 2017.03.14 今天來更新博客發現llvm 4.0.0已經發布了 尼瑪,更新真快..... [chunli@CentOS ~]$ mkdir llvm-3.9.1 [chunli@CentOS ~]$ cd llvm-3.9.1 [chunli@CentOS llvm-3.9.1]$ wget http://releases.llvm.org/3.9.1/llvm-3.9.1.src.tar.xz [chunli@CentOS llvm-3.9.1]$ wget http://releases.llvm.org/3.9.1/cfe-3.9.1.src.tar.xz [chunli@CentOS llvm-3.9.1]$ wget http://releases.llvm.org/3.9.1/compiler-rt-3.9.1.src.tar.xz [chunli@CentOS llvm-3.9.1]$ wget http://releases.llvm.org/3.9.1/clang-tools-extra-3.9.1.src.tar.xz
3, 更新vim
Ensure that your version of Vim is at least 7.4.143 and that it has support for Python 2 or Python 3 scripting.
#查看系統的vim ,版本太低了! [chunli@CentOS ~]$ vim --version VIM - Vi IMproved 7.2 (2008 Aug 9, compiled Apr 5 2012 10:12:47) #在線升級vim [chunli@CentOS ~]$ sudo yum update vim #提示是7.4.629 [chunli@CentOS ~]$ vim --version VIM - Vi IMproved 7.4 (2013 Aug 10, compiled Dec 21 2016 17:06:34) Included patches: 1-207, 209-629 [chunli@CentOS ~]$ vim --version| grep python #查看vim對python的支持 +cryptv +linebreak +python/dyn +viminfo +cscope +lispindent -python3 +vreplace vim 問題解決了!!!
4,安裝ycm, vundle
Install YCM with Vundle (or Pathogen, but Vundle is a better idea).
With Vundle, this would mean adding a Plugin 'Valloric/YouCompleteMe' line to your vimrc.
這個步驟簡單,一般不會有錯
[chunli@CentOS ~]$ sudo yum install git [chunli@CentOS ~]$ git clone https://github.com/VundleVim/Vundle.vim.git ~/.vim/bundle/Vundle.vim [chunli@CentOS ~]$ mv ~/.vimrc ~/.vimrc.back #備份默認的vim配置文件 [chunli@CentOS ~]$ vim ~/.vimrc #創建新的vim配置文件，鍵入如下7行 filetype off set rtp+=~/.vim/bundle/Vundle.vim call vundle#begin() Plugin 'VundleVim/Vundle.vim' Plugin 'Valloric/YouCompleteMe' call vundle#end() filetype plugin indent on [chunli@CentOS ~]$ [chunli@CentOS ~]$ vim +PluginInstall +qall #出現一個vim的窗口，下載大約15分鐘 [chunli@CentOS ~]$ echo $? [chunli@CentOS ~]$ du -sh ~/.vim/bundle/YouCompleteMe/ #看看下載了什么 221M /home/chunli/.vim/bundle/YouCompleteMe/
5 源碼編譯clang !
Complete this step ONLY if you care about semantic completion support for C-family languages. Otherwise it's not necessary '
Download the latest version of libclang,YCM is designed to work with libclang version 3.9 or higher.
歡迎來到極易出錯的地方, 源碼編譯clang !
[chunli@CentOS ~]$ cd llvm-3.9.1/ [chunli@CentOS llvm-3.9.1]$ ll #我已經將這4個包放到這里了 -rw-r--r-- 1 chunli chunli 9.9M 3月 5 23:37 cfe-3.9.1.src.tar.xz -rw-r--r-- 1 chunli chunli 446K 3月 7 21:48 clang-tools-extra-3.9.1.src.tar.xz -rw-r--r-- 1 chunli chunli 1.4M 3月 5 23:37 compiler-rt-3.9.1.src.tar.xz -rw-r--r-- 1 chunli chunli 18M 3月 5 23:37 llvm-3.9.1.src.tar.xz [chunli@CentOS llvm-3.9.1]$ tar xf llvm-3.9.1.src.tar.xz [chunli@CentOS llvm-3.9.1]$ tar xf clang-tools-extra-3.9.1.src.tar.xz [chunli@CentOS llvm-3.9.1]$ tar xf compiler-rt-3.9.1.src.tar.xz [chunli@CentOS llvm-3.9.1]$ tar xf cfe-3.9.1.src.tar.xz [chunli@CentOS llvm-3.9.1]$ mv cfe-3.9.1.src llvm-3.9.1.src/tools/clang [chunli@CentOS llvm-3.9.1]$ mv clang-tools-extra-3.9.1.src llvm-3.9.1.src/tools/clang/tools/extra [chunli@CentOS llvm-3.9.1]$ mv compiler-rt-3.9.1.src llvm-3.9.1.src/projects/compiler-rt #開始編譯clang [chunli@CentOS llvm-3.9.1]$ cmake -G"Unix Makefiles" -DCMAKE_INSTALL_PREFIX=$HOME/clang3.9 -DCMAKE_BUILD_TYPE=Release -DLLVM_TARGETS_TO_BUILD="X86" llvm-3.9.1.src && make -j 4 報錯1:-bash: cmake: command not found ----------------------------------------------- 解決報錯1: 編譯安裝最新的cmake [chunli@CentOS ~]$ tar xf cmake-3.8.0-rc2.tar.gz [chunli@CentOS ~]$ cd cmake-3.8.0-rc2 [chunli@CentOS cmake-3.8.0-rc2]$ ./bootstrap Error when bootstrapping CMake: Cannot find appropriate C compiler on this system. Please specify one using environment variable CC. See cmake_bootstrap.log for compilers attempted. 報錯2:Cannot find appropriate C compiler on this system. ----------------------------------------------- 解決報錯2:安裝編譯器 [chunli@CentOS cmake-3.8.0-rc2]$ sudo yum install gcc [chunli@CentOS cmake-3.8.0-rc2]$ sudo yum install gcc-c++ 繼續編譯cmake [chunli@CentOS cmake-3.8.0-rc2]$ ./bootstrap [chunli@CentOS cmake-3.8.0-rc2]$ echo $? [chunli@CentOS cmake-3.8.0-rc2]$ make -j 4 [chunli@CentOS cmake-3.8.0-rc2]$ echo $? [chunli@CentOS cmake-3.8.0-rc2]$ sudo make install [chunli@CentOS cmake-3.8.0-rc2]$ echo $? cmake 安裝完成 ----------------------------------------------------- #繼續編譯clang [chunli@CentOS llvm-3.9.1]$ cmake -G"Unix Makefiles" -DCMAKE_INSTALL_PREFIX=$HOME/clang3.9 -DCMAKE_BUILD_TYPE=Release -DLLVM_TARGETS_TO_BUILD="X86" llvm-3.9.1.src && make -j 4 CMake Error at cmake/modules/CheckCompilerVersion.cmake:12 (message): Host GCC version must be at least 4.7! Call Stack (most recent call first): cmake/config-ix.cmake:14 (include) CMakeLists.txt:461 (include) 報錯3:Host GCC version must be at least 4.7! ----------------------------------------------------------------- 解決報錯3:需要高版本編譯器 [chunli@CentOS ~]$ gcc --version #查看系統gcc版本,確實低! gcc (GCC) 4.4.7 20120313 (Red Hat 4.4.7-17) [chunli@CentOS ~]$ tar xf gcc-6.3.0.tar.bz2 [chunli@CentOS ~]$ cd gcc-6.3.0 [chunli@CentOS gcc-6.3.0]$ ./contrib/download_prerequisites #約10分鐘,自動下載依賴包 [chunli@CentOS gcc-6.3.0]$ echo $? [chunli@CentOS gcc-6.3.0]$ ./configure --enable-checking=release --enable-languages=c,c++ --disable-multilib && make -j 4 #約1小時 [chunli@CentOS gcc-6.3.0]$ echo $? #查看編譯是否完成 [chunli@CentOS gcc-6.3.0]$ sudo yum remove gcc #確認移除自帶的編譯器 [chunli@CentOS gcc-6.3.0]$ sudo yum remove g++ #確認移除自帶的編譯器 [chunli@CentOS gcc-6.3.0]$ sudo yum remove gcc-c++ [chunli@CentOS gcc-6.3.0]$ gcc #檢查是否真的移除了 -bash: gcc: command not found [chunli@CentOS gcc-6.3.0]$ g++ -bash: g++: command not found [chunli@CentOS gcc-6.3.0]$ sudo make install #開始安裝最新的編譯器 [chunli@CentOS gcc-6.3.0]$ echo $? [chunli@CentOS gcc-6.3.0]$ gcc --version #檢查新版的編譯器 gcc (GCC) 6.3.0 [chunli@CentOS gcc-6.3.0]$ g++ --version g++ (GCC) 6.3.0 編譯器安裝完成 ------------------------------------------------------- #繼續編譯clang, [chunli@CentOS llvm-3.9.1]$ cmake -G"Unix Makefiles" -DCMAKE_INSTALL_PREFIX=$HOME/clang3.9 -DCMAKE_BUILD_TYPE=Release -DLLVM_TARGETS_TO_BUILD="X86" llvm-3.9.1.src && make -j 4 CMake Error at CMakeLists.txt:48 (project): The CMAKE_C_COMPILER: /usr/bin/cc CMake Error at CMakeLists.txt:48 (project): The CMAKE_CXX_COMPILER: /usr/bin/c++ CMake Error at CMakeLists.txt:48 (project): The CMAKE_ASM_COMPILER: /usr/bin/cc 然而又報錯啦4:找不到編譯器 ----------------------------------- 報錯4, 解決方案 [chunli@CentOS llvm-3.9.1]$ which gcc /usr/local/bin/gcc [chunli@CentOS llvm-3.9.1]$ which g++ /usr/local/bin/g++ 設置編譯器路徑,繼續編譯clang [chunli@CentOS llvm-3.9.1]$ cmake -G"Unix Makefiles" -DCMAKE_INSTALL_PREFIX=$HOME/clang3.9 -DCMAKE_ASM_COMPILER=/usr/local/bin/gcc -DCMAKE_C_COMPILER=/usr/local/bin/gcc -DCMAKE_CXX_COMPILER=/usr/local/bin/g++ -DCMAKE_BUILD_TYPE=Release -DLLVM_TARGETS_TO_BUILD="X86" llvm-3.9.1.src && make -j 4 ---------------------------- #繼續編譯clang, [chunli@CentOS llvm-3.9.1]$ cmake -G"Unix Makefiles" -DCMAKE_INSTALL_PREFIX=$HOME/clang3.9 -DCMAKE_ASM_COMPILER=/usr/local/bin/gcc -DCMAKE_C_COMPILER=/usr/local/bin/gcc -DCMAKE_CXX_COMPILER=/usr/local/bin/g++ -DCMAKE_BUILD_TYPE=Release -DLLVM_TARGETS_TO_BUILD="X86" llvm-3.9.1.src && make -j 4 CMake Error at CMakeLists.txt:488 (message): Python 2.7 or newer is required 報錯5:需求新版的python ------------------------------ 報錯5 解決方法:編譯安裝python2.7 [chunli@CentOS llvm-3.9.1]$ python --version #查看當前python版本 Python 2.6.6 [chunli@CentOS llvm-3.9.1]$ yum list | grep python | grep 2.7 #倉庫沒有2.7版本 [chunli@CentOS ~]$ tar xf Python-2.7.13.tar.xz [chunli@CentOS ~]$ cd Python-2.7.13 [chunli@CentOS Python-2.7.13]$ ./configure --prefix=$HOME/python-2.7 #安裝位置隨意,自己家有寫權限 [chunli@CentOS Python-2.7.13]$ echo $? [chunli@CentOS Python-2.7.13]$ make -j 4 [chunli@CentOS Python-2.7.13]$ make install [chunli@CentOS Python-2.7.13]$ echo $? 修改python路徑 [chunli@CentOS Python-2.7.13]$ which python /usr/bin/python [chunli@CentOS Python-2.7.13]$ ll /usr/bin/python* -rwxr-xr-x. 2 root root 6088 Nov 22 2013 /usr/bin/python lrwxrwxrwx. 1 root root 6 Mar 5 23:29 /usr/bin/python2 -> python -rwxr-xr-x. 2 root root 6088 Nov 22 2013 /usr/bin/python2.6 [chunli@CentOS Python-2.7.13]$ sudo ln -s -f $HOME/python-2.7/bin/python2.7 /usr/bin/python [chunli@CentOS Python-2.7.13]$ python --version Python 2.7.13 新版python就這樣安裝好了 ----------------------- #繼續編譯clang, [chunli@CentOS llvm-3.9.1]$ cmake -G"Unix Makefiles" -DCMAKE_INSTALL_PREFIX=$HOME/clang3.9 -DCMAKE_ASM_COMPILER=/usr/local/bin/gcc -DCMAKE_C_COMPILER=/usr/local/bin/gcc -DCMAKE_CXX_COMPILER=/usr/local/bin/g++ -DCMAKE_BUILD_TYPE=Release -DLLVM_TARGETS_TO_BUILD="X86" llvm-3.9.1.src && make -j 4 ../../bin/llvm-tblgen: /usr/lib/libstdc++.so.6: version `GLIBCXX_3.4.20' not found (required by ../../bin/llvm-tblgen) ../../bin/llvm-tblgen: /usr/lib/libstdc++.so.6: version `GLIBCXX_3.4.15' not found (required by ../../bin/llvm-tblgen) ../../bin/llvm-tblgen: /usr/lib/libstdc++.so.6: version `GLIBCXX_3.4.21' not found (required by ../../bin/llvm-tblgen) ' 報錯6 ,C++庫版本低! ------------------------------ 解決報錯6:手動修改舊版c++庫文件 [chunli@CentOS ~]$ find /usr/local/ -name 'libstdc++.so.6*' /usr/local/lib/libstdc++.so.6.0.22 /usr/local/lib/libstdc++.so.6 [chunli@CentOS ~]$ ll /usr/lib/libstdc++.so.6 lrwxrwxrwx. 1 root root 19 Mar 11 18:23 /usr/lib/libstdc++.so.6 -> libstdc++.so.6.0.13 [chunli@CentOS ~]$ sudo ln -fs /usr/local/lib/libstdc++.so.6.0.22 /usr/lib/libstdc++.so.6 ---------------------------------------------------------------------- #繼續編譯clang [chunli@CentOS llvm-3.9.1]$ cmake -G"Unix Makefiles" -DCMAKE_INSTALL_PREFIX=$HOME/clang3.9 -DCMAKE_ASM_COMPILER=/usr/local/bin/gcc -DCMAKE_C_COMPILER=/usr/local/bin/gcc -DCMAKE_CXX_COMPILER=/usr/local/bin/g++ -DCMAKE_BUILD_TYPE=Release -DLLVM_TARGETS_TO_BUILD="X86" llvm-3.9.1.src && make -j 4 [chunli@CentOS llvm-3.9.1]$ echo $? 終于編譯好了!
6, 編譯 ycm_core
Compile the ycm_core library that YCM needs. This library is the C++ engine that YCM uses to get fast completions.
[chunli@CentOS ~]$ mkdir ycm_build [chunli@CentOS ~]$ cd ycm_build #開始編譯ycm_core [chunli@CentOS ycm_build]$ cmake -G "Unix Makefiles" -DEXTERNAL_LIBCLANG_PATH=$HOME/llvm-3.9.1/lib/libclang.so . ~/.vim/bundle/YouCompleteMe/third_party/ycmd/cpp 報錯7: 找不到python-devel CMake Error at /usr/local/share/cmake-3.8/Modules/FindPackageHandleStandardArgs.cmake:137 (message): Could NOT find PythonLibs (missing: PYTHON_LIBRARIES PYTHON_INCLUDE_DIRS) (Required is at least version "2.6") --------------------------------------- 解決報錯7 安裝python-dev [chunli@CentOS ycm_build]$ sudo yum install python-devel ---------------------------------- 報錯8,發現yum不能用 ,是因為python的問題 There was a problem importing one of the Python modules required to run yum. The error leading to this problem was: No module named yum ------------------------------------- 解決報錯8 ,修改yum配置 [chunli@CentOS ycm_build]$ which python /usr/bin/python [chunli@CentOS ycm_build]$ ll /usr/bin/python* lrwxrwxrwx. 1 root root 37 Mar 11 21:22 /usr/bin/python -> /home/chunli/python-2.7/bin/python2.7 lrwxrwxrwx. 1 root root 6 Mar 5 23:29 /usr/bin/python2 -> python -rwxr-xr-x. 1 root root 6088 Nov 22 2013 /usr/bin/python2.6 [chunli@CentOS ycm_build]$ [chunli@CentOS ycm_build]$ sudo vim /usr/bin/yum [chunli@CentOS ycm_build]$ cat /usr/bin/yum #!/usr/bin/python #刪除此行 #!/usr/bin/python2.6 #增加此行 [chunli@CentOS ycm_build]$ sudo yum install python-devel yum, python-devel解決了 ----------------------------------- #繼續編譯ycm_core [chunli@CentOS ycm_build]$ cmake -G "Unix Makefiles" -DEXTERNAL_LIBCLANG_PATH=$HOME/llvm-3.9.1/lib/libclang.so . ~/.vim/bundle/YouCompleteMe/third_party/ycmd/cpp [chunli@CentOS ycm_build]$ echo $? [chunli@CentOS ycm_build]$ cmake --build . --target ycm_core --config Release [chunli@CentOS ycm_build]$ echo $? #ycm_core 完成！ [chunli@CentOS ycm_build]$ cp ~/.vim/bundle/YouCompleteMe/third_party/ycmd/examples/.ycm_extra_conf.py ~/.vim/ [chunli@CentOS ycm_build]$ vim ~/.vimrc #添加兩行 let g:ycm_server_python_interpreter='/usr/bin/python' let g:ycm_global_ycm_extra_conf='~/.vim/.ycm_extra_conf.py' ================================================ #啟動vim 報錯9, The ycmd server SHUT DOWN (restart with ':YcmRestartServer'). Unexpected error while loading the YCM core library. Use the ':YcmToggleLogs' command to check the logs. :YcmToggleLogs #查看錯誤信息 Available logfiles are: ycm_jHhxre.log ycmd_50555_stderr_V6wuYO.log ycmd_50555_stdout_Rm520B.log Press ENTER or type command to continue 在ycm_jHhxre.log文件中全是報錯: Failed to establish a new connection 在ycmd_50555_stderr_V6wuYO.log文件中報錯 ImportError: /usr/lib/libstdc++.so.6: version 'GLIBCXX_3.4.20' not found (required by /home/chunli/.vim/bundle/YouCompleteMe/third_party/ycmd/ycmd/../ycm_core.so) 文件ycmd_50555_stdout_Rm520B.log是空的 ========================================== 解決報錯9, GLIBCXX_3.4.20 not found [chunli@CentOS ~]$ find /usr/ -name 'libstdc++.so.6*' /usr/local/lib/libstdc++.so.6.0.22 /usr/local/lib/libstdc++.so.6 /usr/lib/libstdc++.so.6 /usr/lib/libstdc++.so.6.0.13 [chunli@CentOS ~]$ [chunli@CentOS ~]$ sudo ln -f -s /usr/local/lib/libstdc++.so.6.0.22 /usr/lib/libstdc++.so.6 [chunli@CentOS ~]$ ll /usr/lib/libstdc++.so.6* lrwxrwxrwx. 1 root root 34 Mar 12 01:27 /usr/lib/libstdc++.so.6 -> /usr/local/lib/libstdc++.so.6.0.22 -rwxr-xr-x. 1 root root 942040 May 10 2016 /usr/lib/libstdc++.so.6.0.13 [chunli@CentOS ~]$ ycm其他命令 :YcmRestartServer :messages :YcmDiags :YcmDebugInfo
7 效果圖
歷經千辛萬苦, ycm終于可以正常使用了!
先來幾種自動補全圖!!!!
結構體補全1
結構體補全2
頭文件補全
語法檢查
看看補全Linux系統結構體補全怎么樣
將C頭文件路徑寫入配置
[chunli@CentOS ~]$ vim ~/.vim/.ycm_extra_conf.py 在flags中尾端追加2行 '-isystem', '/usr/include/',
1級補全
2級補全,看起來還不錯
3 無法補全結構體中的函數指針成員,必須自己敲
ycm的工作模式,很明顯是CS模式
沒有運行vim時,沒有ycm進程 [chunli@CentOS ~]$ sudo ps aux| grep ycm chunli 3408 0.0 0.0 4356 744 pts/3 S+ 01:40 0:00 grep ycm
打開一個C文件,進入自動補全狀態
[chunli@CentOS ~]$ sudo ps aux | grep ycm #會看到一個ycm守護進程 chunli 4075 20.0 0.4 406820 19460 ? Ssl 01:48 0:00 /usr/bin/python /home/chunli/.vim/bundle/YouCompleteMe/python/ycm/../../third_party/ycmd/ycmd --port=54985 --options_file=/tmp/tmp0bDvy3 --log=info --idle_suicide_seconds=10800 --stdout=/tmp/ycmd_39292_stdout_oaYfWe.log --stderr=/tmp/ycmd_39292_stderr_VWlF6c.log chunli 4114 0.0 0.0 4356 720 pts/2 S+ 01:49 0:00 grep ycm [chunli@CentOS ~]$ sudo netstat -tunlap | grep python tcp 0 0 127.0.0.1:49705 0.0.0.0:* LISTEN 4233/python tcp 0 0 127.0.0.1:49705 127.0.0.1:41286 ESTABLISHED 4233/python tcp 0 0 127.0.0.1:49705 127.0.0.1:41288 ESTABLISHED 4233/python tcp 0 0 127.0.0.1:49705 127.0.0.1:41287 ESTABLISHED 4233/python [chunli@CentOS ~]$
8 清理工作:
[chunli@CentOS ~]$ rm -rf cmake-3.8.0-rc2* [chunli@CentOS ~]$ rm -rf Python-2.7.13.* [chunli@CentOS ~]$ rm -rf python-2.7/ [chunli@CentOS ~]$ rm -rf clang3.9/ [chunli@CentOS ~]$ rm -rf llvm-3.9.1/ [chunli@CentOS ~]$ rm -rf gcc-6.3.0* [chunli@CentOS ~]$ rm -rf ycm_build/
clang 編譯好了之后,不用安裝,僅僅為了得到libclang.so
python2.7 也是臨時的,作為clang的依賴 不需要安裝什么第三方庫
gcc 也可以是臨時的, 用來編譯clang, 還可以得到libstdc++.so
奇怪的問題,我前面已經替換過這個文件/usr/bin/python,我以為清理python2.7.13后vim不能用了.
但是vim 的自動補全沒有任何影響,來看看/usr/bin/python --version 又是2.6版本, 郁悶!
難道是安裝python-devel時自動恢復/usr/bin/python為python2.6了 ?
[chunli@CentOS ~]$ ll /usr/bin/python* -rwxr-xr-x. 2 root root 3592 Aug 18 2016 /usr/bin/python lrwxrwxrwx. 1 root root 6 Mar 12 00:44 /usr/bin/python2 -> python -rwxr-xr-x. 2 root root 3592 Aug 18 2016 /usr/bin/python2.6 -rwxr-xr-x. 1 root root 1418 Aug 18 2016 /usr/bin/python2.6-config lrwxrwxrwx. 1 root root 16 Mar 12 00:44 /usr/bin/python-config -> python2.6-config [chunli@CentOS ~]$
接下來看：
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