The format of the production access log access.log is as follows:
10.202.33.61|2016-03-01 10:01:10
10.202.33.62|2016-03-01 10:01:10
10.202.33.61|2016-03-01 10:01:10
10.202.33.62|2016-03-01 10:01:10
Count the number of occurrences of each ip
cut -d '|' -f 1 access.log |sort|uniq -c