I have this type of output which has been previously sorted for example,
A 1
A 2
A 3
A 1
B 2
B 3
C 2
But now i want to remove the A, B, & C using cut but separate the groups so i will still be able to identify the numbers that belong to each letter for example a line to separate each group....
is there some command to do this or some method???
thanks in advance