Compter le nombre d'occurence d'un fichier suite à un grep :

grep "18/Dec/2017:12:" *log | awk -F ':' '{count[$1]++} END {for (file in count) print file, count[file]}'

Sort by number :

grep "18/Dec/2017:12:" otk-expert-access.log | awk -F ' -' '{count[$1]++} END {for (file in count) print file, count[file]}' | sort -g -k 2

Analyser log Apache en ligne de commandes :

Top 50 des urls :

awk -F'[ "]+' '{ urls[$7]++ } END { for (i in urls) {printf "%15s - %d\n", i, urls[i] } }' file_log | sort -nk 3 | tail -n 50

Top 50 des ips :

awk -F'[ "]+' '{ ipcount[$1]++ } END { for (i in ipcount) {printf "%15s - %d\n", i, ipcount[i] } }' file_log | sort -nk 3 | tail -n 50