How to extract 5 unique lines from a text file with 30 lines?
Input Sample:
This is line 1 This is line 2 This is line 3 This is line 4 This is line 5 This is line 6 This is line 7 This is line 8 This is line 9 This is line 10 This is line 11 ... This is line 28 This is line 29 This is line 30
Output Sample:
This is line 10 This is line 17 This is line 20 This is line 22 This is line 21