4 ms·

In k9 it should be: A_B

• chrispsn 6y ago
  `A 0: ("some";"lines";"are";"here"); / write to file A `B 0: ("more";"lines";"follow";"here"); / write to file B _/ 0:' `A`B / read files A, B and find lines of B that are not in A more follow