小编Wen*_*ong的帖子

I want to monitor a log file, when a new log message match my defined pattern (say contain “error”), then send out an email to me.

To do that, I wrote a python script monitor.py, the main part looks like:

import sys

for line in sys.stdin:
    if "error" in line:
        print line 

It works well when I use tail my.log | python monitor.py, then I switch to tail -f my.log | python monitor.py, then it doesn’t work, at …