I have File 1 (tab delimited):
ALI 1987
ALI 2015
ADAM 368
ADAM 659
JILL 123c.56
JILL 78p.rs_896
And I would like to get File2:
ALI: 1987, 2015
ADAM: 368,659
JILL: 123c.56, 78p.rs_896
I know how to revert columns to rows only for $2:
awk '{printf ("%s,",$2)}' File1
But How could I create condition for $1 only uniqe first? Thank you