vim 使用和配置

vim 启动的时候，默认加载用户目录下.vimrc的配置文件，如果不存在，则会加载系统配置文件/etc/vim/vimrc

~/.vimrc文件配置

#避免中文乱码
set fileencodings=utf-,ucs-bom,gb18030,gbk,gb2312,cp936
set termencoding=utf-
set encoding=utf-8
#显示语法高亮
syntax on
#显示行号
set nu
#设置默认tab键位为4
set tabstop=

eg:

  # Enable and configure HTTP caching (disabled by default)
  # See http://scrapy.readthedocs.org/en/latest/topics/downloader-middleware.html#httpcache-middleware-settings
  #HTTPCACHE_ENABLED = True
  #HTTPCACHE_EXPIRATION_SECS =
  #HTTPCACHE_DIR = 'httpcache'
  #HTTPCACHE_IGNORE_HTTP_CODES = []
  #HTTPCACHE_STORAGE = 'scrapy.extensions.httpcache.FilesystemCacheStorage'

  # 修改scrapy默认的调度器为scrapy重写的调度器 启动从reids缓存读取队列调度爬虫
  SCHEDULER = "scrapy_redis.scheduler.Scheduler"

  # 调度状态持久化，不清理redis缓存，允许暂停/启动爬虫
  SCHEDULER_PERSIST = True

  # 指定redis的地址和端口(可选，程序将使用默认的地址localhost:)
  REDIS_HOST = 'localhost'
 REDIS_PORT =