概要：每次安装完虚拟机时，都要配置自己的环境，好多问题需要一个一个的寻找答案，浪费自己的时间，所以总结了一下留给以后参考使用
一、安装完成如需使用root身份登录，可打开终端输入以下命令：
# 设置root密码
sudo passwd root
#切换到root用户
sudo -s
想要在登录界面使用root身份登录，可编辑/etc/lightdm/目录下的lightdm.conf文件，如没有此文件，直接创建
/usr/share/lightdm/lightdm.conf.d/50-ubuntu.conf
1.编辑/usr/share/lightdm/lightdm.conf.d/50-ubuntu.conf
vim /usr/share/lightdm/lightdm.conf.d/50-ubuntu.conf
内容如下
[SeatDefaults]
autologin-user=root
user-session=ubuntu
greeter-show-manual-login=true
allow-guest=false
2.编辑 /root/.profile
vim /root/.profile
打开文件后找到“mesg on”
将其更改为“tty -s && mesg n”
3.用reboot命令重启即可
二、安装Openssh
1、Ubuntu 下安装OPenSSHServer
sudo apt-get install openssh-server
2、对openssh server 进行配置
vim /etc/ssh/sshd_config
找到permitRootLogin on一行，改为PermitRootLogin Yes
3、重启openssh server
service sshd restart
三、ssh client 报 algorithm negotiation Failed的解决方法之一
1、修改sshd的配置文件 /etc/ssh/sshd_config
Ciphers aes128-cbc,aes192-cbc,aes256-cbc,aes128-ctr,aes192-ctr,aes256-ctr,3des-cbc,arcfour128,arcfour256,arcfour,blowfish-cbc,cast128-cbc
MACshmac-md5,hmac-sha1,umac-64@openssh.com,hmac-ripemd160,hmac-sha1-96,hmac-md5-96
KexAlgorithms diffie-hellman-group1-sha1,diffie-hellman-group14-sha1,diffie-hellman-group-exchange-sha1,diffie-hellman-group-exchange-sha256,ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group1-sha1,curve25519-sha256@libssh.org
2、重启服务
sudo /etc/init.d/ssh restart 重启sshd服务后，即可正常连接。
四、同步时间
安装ntpdate工具
# sudo apt-get install ntpdate
1.首先查看时区：
date -R
Tue,17 Dec 2013 18:23:01+0800
如果要修改时区，执行sudo tzselect
2.选择区域：亚洲
sudo tzselect
Please identify a locationso that time zone rules can be set correctly.
Please select a continentor ocean.
1) Africa
2) Americas
3) Antarctica
4) Arctic Ocean
5) Asia
#? 5
3.选择国家：中国
Please select a country.
9) China 26) Laos 43) Taiwan
#? 9
4.选择时区：北京时间
Please select one of thefollowing time zone regions.
1) east China - Beijing,Guangdong,Shanghai,etc.
2) Heilongjiang (exceptMohe),Jilin
#? 1
5.确认验证：
Is the above informationOK?
1) Yes
2) No
#? 1
6.复制文件到/etc目录下
cp /usr/share/zoneinfo/Asia/Shanghai /etc/localtime
7.更新时间
sudo ntpdate time.windows.com
五、安装YOucompleteme
1、卸载老版本vim
sudo apt-get remove vim
sudo apt-get remove vim-runtime
sudo apt-get remove gvim
sudo apt-get remove vim-tiny
sudo apt-get remove vim-common
sudo apt-get remove vim-gui-common
2、下载vim最新源码
cd ~
git clonehttps://github.com/vim/vim.git
3、进入vim
cd vim
设置Vim源码的编译属性
./configure--with-features=huge --enable-rubyinterp --enable-pythoninterp --with-python-config-dir=/usr/lib/python2.7/config-i386-linux-gnu/--enable-perlinterp --enable-gui=gtk2--enable-cscope --enable-luainterp --enable-perlinterp --enable-multibyte --prefix=/usr
其中参数说明如下：
--with-features=huge：支持最大特性
--enable-cscope：Vim对cscope支持
--with-python-config-dir=/usr/lib/python2.7/config-i386-linux-gnu/指定 python 路径
--prefix=/usr：编译安装路径
sudo make VIMRUNTIMEDIR=/usr/share/vim/vim74
sudo make install
4、安装YouCompleteMe
a、下载
git clone --recursive git://github.com/Valloric/YouCompleteMe
如果执行该命令没报错,就ok了. 但是中途有可能会断掉,可以 cd 到YouCompleteMe,然后反复用如下命令再次进行下载:
git submodule update --init --recursive
这个命令下载时间挺长的
b、 安装
cd ~/.vim/bundle/YouCompleteMe
./install.py --clang-completer
成功的log如下:
-- [download 99% complete]
-- [download 100% complete]
Using libclang to provide semantic completion for C/C++/ObjC
Using external libclang: /tmp/ycm_build.CKY92s/clang+llvm-3.8.0-x86_64-linux-gnu-ubuntu-14.04/lib/libclang.so.3.8
-- Found PythonInterp: /usr/bin/python2.7 (found version"2.7.11")
-- Looking for pthread.h
-- Looking for pthread.h - found
-- Looking for pthread_create
-- Looking for pthread_create - not found
-- Looking for pthread_create in pthreads
-- Looking for pthread_create in pthreads - not found
-- Looking for pthread_create in pthread
-- Looking for pthread_create in pthread - found
-- Found Threads: TRUE
-- Configuring done
-- Generating done
-- Build files have been written to: /tmp/ycm_build.CKY92s
Scanning dependencies of target BoostParts
[ 0%] Building CXX objectBoostParts/CMakeFiles/BoostParts.dir/libs/regex/src/regex_raw_buffer.cpp.o
[ 0%] Building CXX objectBoostParts/CMakeFiles/BoostParts.dir/libs/regex/src/regex_debug.cpp.o
[ 1%] Building CXX objectBoostParts/CMakeFiles/BoostParts.dir/libs/regex/src/w32_regex_traits.cpp.o
[ 2%] Building CXX objectBoostParts/CMakeFiles/BoostParts.dir/libs/regex/src/wide_posix_api.cpp.o
...
[100%] Building CXX objectycm/CMakeFiles/ycm_core.dir/CustomAssert.cpp.o
[100%] Linking CXX shared library/home/wuyt/mutils/debian_lenny_cfg/vim_cfg/.vim/bundle/YouCompleteMe/third_party/ycmd/ycm_core.so
[100%] Built target ycm_core
c、配置
.vimrc中加入:
" YouCompleteMe
set runtimepath+=~/.vim/bundle/YouCompleteMe
let g:ycm_collect_identifiers_from_tags_files = 1 " 开启 YCM 基于标签引擎
let g:ycm_collect_identifiers_from_comments_and_strings = 1 " 注释与字符串中的内容也用于补全
let g:syntastic_ignore_files=[".*\.py$"]
let g:ycm_seed_identifiers_with_Syntax = 1 " 语法关键字补全
let g:ycm_complete_in_comments = 1
let g:ycm_confirm_extra_conf = 0
let g:ycm_key_list_select_completion = ['<c-n>','<Down>'] " 映射按键,没有这个会拦截掉tab,导致其他插件的tab不能用.
let g:ycm_key_list_prevIoUs_completion = ['<c-p>','<Up>']
let g:ycm_complete_in_comments = 1 " 在注释输入中也能补全
let g:ycm_complete_in_strings = 1 " 在字符串输入中也能补全
let g:ycm_collect_identifiers_from_comments_and_strings = 1 " 注释和字符串中的文字也会被收入补全
let g:ycm_global_ycm_extra_conf='~/.vim/bundle/YouCompleteMe/third_party/ycmd/cpp/ycm/.ycm_extra_conf.py'
let g:ycm_show_diagnostics_ui = 0 " 禁用语法检查
inoremap <expr> <CR> pumvisible() ?"\<C-y>" : "\<CR>" | " 回车即选中当前项
nnoremap <c-j> :YcmCompleterGoToDefinitionElseDeclaration<CR>|" 跳转到定义处
"let g:ycm_min_num_of_chars_for_completion=2 " 从第2个键入字符就开始罗列匹配项
其中~/.vim/bundle/YouCompleteMe 为下载 YouCompleteMeu 的路径.
六、安装NERDTree
wget http://www.vim.org/scripts/download_script.PHP?src_id=17123 -Onerdtree.zip
unzip nerdtree.zip
mkdir -p ~/.vim/{plugin,doc}
cp plugin/NERD_tree.vim ~/.vim/plugin/
cp doc/NERD_tree.txt ~/.vim/doc/
安装好后，命令行中输入vim，打开vim后，在vim中输入:NERDTree，你就可以看到NERDTree的效果了。
