Your memory's fine. man 3 crypt => https://linux.die.net/man/3/crypt
Or (a little faster): comm -23 <(sort file1) <(sort file2)
Your memory's fine. man 3 crypt => https://linux.die.net/man/3/crypt
Or (a little faster): comm -23 <(sort file1) <(sort file2)