número de gato a línea
$ cat -n file | awk '$1>=4 && $1<=8 || $1==12 || $1==42'
4 Line 4
5 Line 5
6 Line 6
7 Line 7
8 Line 8
12 Line 12
42 Line 42
rizal marsaoly
$ cat -n file | awk '$1>=4 && $1<=8 || $1==12 || $1==42'
4 Line 4
5 Line 5
6 Line 6
7 Line 7
8 Line 8
12 Line 12
42 Line 42awk 'NR==1' file.txtcat -n text.txt