I do have a tab delimited file with the following format
200 46
201 67
204 89
205 98
206 89
208 890
210 23
..
...
100's of rows
I would like to output the missing consecutive number of the first column.
The expected output will be:
202
203
207
209
It would be great if I could specify the start and end numbers. Let me know the best way to do this using awk or sed.