$ for ogrno in $(cut -f1 ogrenci-not-donem1 | sed 1d); do grep $ogrno ogrenci-not-donem2; done 0000001 Elif Yılmaz 70 75 80 B 0000101 Ayşe Karaosmanoğlu 90 95 100 A 0000060 Ahmet Çelik 80 40 50 C 0000079 Mustafa Kara 55 60 65 C 0000054 Ayşe Demir 70 85 60 B