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linuxunixdiffcmpuniq

Compare two lines in same file

Given a file like the following:-

01/09/2005
02/09/2005
03/09/2006
03/09/2006

I wish to compare if the last two lines are the same, and return a 1 if so or a 0 if they are not.

I can get the last two using a cat tail -2

Solution 
  • tail -n 2 filename.txt | uniq | wc -l

    This will yield 1 for identical lines, 2 for different.