yum install vsftpd   出现的错误如下
Traceback (most recent call last):
  File "/usr/bin/yum", line 30, in ?
    yummain.main(sys.argv[1:])
  File "/usr/share/yum/yummain.py", line 159, in main
    locale.setlocale(locale.LC_ALL, '')
  File "/usr/lib/python2.2/locale.py", line 381, in setlocale
    return _setlocale(category, locale)

原因是我将  /etc/sysconfig/i18n  文件做了修改,最后我改回去就可以了。