Count number of occurences group by

Question

I need to count the number of times each occurence appear, not only 'group by' which I make with sort:

>>> cat /var/log/squid/access.log* | awk '{ print $NF }' | sort -u
TCP_CLIENT_REFRESH_MISS:DIRECT
TCP_DENIED:NONE
TCP_HIT:NONE
TCP_IMS_HIT:NONE
TCP_MEM_HIT:DIRECT
TCP_MEM_HIT:NONE
TCP_MISS:DIRECT
TCP_MISS:NONE
TCP_NEGATIVE_HIT:NONE
TCP_REFRESH_HIT:DIRECT
TCP_REFRESH_MISS:DIRECT
>>>

How would you do?

Answer 1

sort | uniq -c is what you are looking for.

Answer 2

try this:

awk '{a[$NF]++}END{for (i in a) print a[i],i|"sort"}' /var/log/squid/access.log*