Исправление futurama, (текущая версия) :
awk 'BEGIN {err=1}; $2 == "aa" {print; err=0; exit}; END {exit(err)}' /file
all the END rules are merged, and executed when all the input is exhausted (or when an exit statement is executed)
Исходная версия futurama, :
awk 'BEGIN {err=1}; $2 == "aa" {print; err=0; exit}; END {exit(err)}' /file