Cut Last 3 Char from Output AWK

Memotong 3 string terakhir dari output yang dihasilkan oleh awk

cat /var/log/exim/mainlog | awk '{print $1" "$2}' | head -n 5

hasil

2022-03-06 03:22:55
2022-03-06 03:22:55
2022-03-06 03:22:55
2022-03-06 03:22:55
2022-03-06 03:22:55

kita potong

cat /var/log/exim/mainlog | awk '{print $1" "substr($2, 1, length($2)-3)}' | head -n 5

Output

2022-03-06 03:22
2022-03-06 03:22
2022-03-06 03:22
2022-03-06 03:22
2022-03-06 03:22