awk '{c[$1]++;}END{for(k in c){print k": "c[k];}}' /var/log/nginx/myalert_access.log
113.118.106.137: 17
113.116.28.35: 4171

[root@VM_0_13_centos demo]# cat phone.txt
987-123-4567
123 456 7890
(123) 456-7890
[root@VM_0_13_centos demo]# grep -o '\-[0-9]\{3\}' phone.txt
-123
-456
-789
[root@VM_0_13_centos demo]# grep -no '\-[0-9]\{3\}' phone.txt
1:-123
1:-456
3:-789

sed 's/[^ -z]/*/g'

sed -e '1!G; h; $!d'