kimitoboku/24-121745.sh

## 24-121745.sh
#!/bin/bash

i=0;
tail -f path | awk '{if(list[$1]=="done"){}else if(list[$1] == $4){print $1;list[$1]="done"}else{list[$1] = $4}}' | while read line
do
i=$(( i + 1 ))
echo "$i:$line"
done
	#!/bin/bash

	i=0;
	tail -f path \| awk '{if(list[$1]=="done"){}else if(list[$1] == $4){print $1;list[$1]="done"}else{list[$1] = $4}}' \| while read line
	do
	i=$(( i + 1 ))
	echo "$i:$line"
	done