Implement tail with awk

Question

Alright so here i am struggling with this awk code wich should emulate the tail command

num=$1;
{
    vect[NR]=$0;

}
END{
    for(i=NR-num;i<=NR;i++)
            


        

Answer 1

This might work for you:

awk '{a=a b $0;b=RS;if(NR<=v)next;a=substr(a,index(a,RS)+1)}END{print a}' v=10