I want to do something like this:
watch tail -f | wc -l #=> 43 #=> 56 #=> 61 #=> 44 #=> ...
It counts new lines of tail each second
/ Linux, CentOs
To be more clear. I have got something like this:
tail -f /var/log/my_process/*.log | grep error
I am reading some error messages. And now I want to count them. How many ~ errors I have got in a second. So one line in a log is one error in a proccess.