rootpw "password"

rootpw --iscrypted password_hash
authconfig --enableshadow --enablemd5 (--passalgo=sha256 or --passalgo=sha512) 

yum install gcc make ncurses ncurses-devel -y

yum install ctags git tcl-devel ruby ruby-devel lua lua-devel luajit luajit-devel python python-devel perl perl-devel perl-ExtUtils-ParseXS perl-ExtUtils-XSpp perl-ExtUtils-CBuilder perl-ExtUtils-Embed -y

yum list installed | grep -i vim

sudo yum remove vim-enhanced vim-common vim-filesystem

curl -fLo ~/.vim/autoload/plug.vim --create-dirs \
    https://raw.githubusercontent.com/junegunn/vim-plug/master/plug.vim

vimrc

call plug#begin('~/.vim/plugged')

Plug 'junegunn/vim-easy-align'

call plug#end()

针对 github 的快捷书写：Plug 'junegunn/vim-easy-align' 会下载 https://github.com/junegunn/vim-easy-align

任意 URL: Plug 'https://github.com/junegunn/vim-github-dashboard.git'

按需要加载（相应命令运行时才加载）：Plug 'scrooloose/nerdtree', { 'on': 'NERDTreeToggle' }

按文件类型加载：Plug 'tpope/vim-fireplace', { 'for': 'clojure' }

指定版本：Plug 'fatih/vim-go', { 'tag': '*' }

手动管理和更新的插件：Plug '~/my-prototype-plugin'

word=abcd-//master-01://httpab
echo ${word#*//} 
# 输出:master-01://httpab

word=abcd-//master-01://httpab
echo ${word##*//} 
# 输出:httpab

word=abcd-//master-01://httpab
echo ${word%//*} 
# 输出:abcd-//master-01:

kill -9 `lsof -t -i:port`