Cygwin下安装vim后，vim中退格键无法正常使用

问题描述：

在Cygwin中安装完vim后

进入vim，发现上下左右键和退格键都无法正常使用

问题分析：

首先考虑到的就是缺少vim的配置文件，首先查看/etc路径下是否有vim的配置文件

admin@ThinkPad /etc
$ cd /etc

admin@ThinkPad /etc
$ ls -a|grep vimrc

发现/etc下没有vim的全局配置文件，然后再查找当前用户的vim配置文件.vimrc

admin@ThinkPad /etc
$ cd ~

admin@ThinkPad ~
$ ls -a|grep .vimrc

发现也没有，可以确定是缺少vim的配置文件导致部分按键设置没有生效

解决方式：

从文件共享目录中拷贝一个vim的配置文件至当前用户家目录下即可

admin@ThinkPad ~
$ cp /usr/share/vim/vim74/vimrc_example.vim ~/.vimrc

admin@ThinkPad ~
$ cat ~/.vimrc
" An example for a vimrc file.
"
" Maintainer:   Bram Moolenaar <Bram@vim.org>
" Last change:  2011 Apr 15
"
" To use it, copy it to
"     for Unix and OS/2:  ~/.vimrc
"             for Amiga:  s:.vimrc
"  for MS-DOS and Win32:  $VIM\_vimrc
"           for OpenVMS:  sys$login:.vimrc

" When started as "evim", evim.vim will already have done these settings.
if v:progname =~? "evim"
  finish
endif

" Use Vim settings, rather than Vi settings (much better!).
" This must be first, because it changes other options as a side effect.
set nocompatible

" allow backspacing over everything in insert mode
set backspace=indent,eol,start
......