I want to find the unique url in a apache logs which got 404 error .
I can do something like
"cat apache.log|grep 404|awk '{print $2,$3}'|grep 404
this will give me say
/foo.html 404
/foo.html 404
/foo.html 404
/bar.html 404
/cat.html 404
However my output should only find unique results and should not give 3 instances of foo.html
It should look
/foo.html 404
/bar.html 404
/cat.html 404