代码如下：
代码： 全选
computer:~$ ntop -i wlan0
Thu Sep 3 15:40:32 2015 Initializing gdbm databases
Thu Sep 3 15:40:32 2015 **ERROR** ....open of /var/lib/ntop/prefsCache.db failed: File open error
Thu Sep 3 15:40:32 2015 Possible solution: please use '-P <directory>'
Thu Sep 3 15:40:32 2015 **FATAL_ERROR** GDBM open failed, ntop shutting down...
Thu Sep 3 15:40:32 2015 CLEANUP[t140606829361344]: ntop caught signal 2 [state=2]
Thu Sep 3 15:40:32 2015 ntop is now quitting...