9

I used comm to compare two sorted files. Each line in these files are positive integer numbers. But the results show

comm: file 1 is not in sorted order
comm: file 2 is not in sorted order

How come the error even if these two files are sorted?

6

comm wants lexicographic sort, not numeric sort. Correct this and the problem should go away.

  • how to make it do numeric sort? – wenzi Nov 16 '12 at 11:32
  • 4
    @wenzi sort -n – Gilles Nov 16 '12 at 22:56

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