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-8,ucs-bom,gb18030,gbk,gb2312,cp936
set termencoding=utf-8
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=4

 eg:

 84 # Enable and configure HTTP caching (disabled by default)
 85 # See http://scrapy.readthedocs.org/en/latest/topics/downloader-middleware.html#httpcache-middleware-settings
 86 #HTTPCACHE_ENABLED = True
 87 #HTTPCACHE_EXPIRATION_SECS = 0
 88 #HTTPCACHE_DIR = 'httpcache'
 89 #HTTPCACHE_IGNORE_HTTP_CODES = []
 90 #HTTPCACHE_STORAGE = 'scrapy.extensions.httpcache.FilesystemCacheStorage'
 91 
 92 # 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
 93 SCHEDULER = "scrapy_redis.scheduler.Scheduler"
 94 
 95 # 调度状态持久化，不清理redis缓存，允许暂停/启动爬虫
 96 SCHEDULER_PERSIST = True
 97 
 98 # 指定redis的地址和端口(可选，程序将使用默认的地址localhost:6379)
 99 REDIS_HOST = 'localhost'
100 REDIS_PORT = 6378