For ex, a file contain contents:
10.45.56.84 raj
10.49.31.81 mum
10.49.31.86 mum
10.81.51.92 guj
10.45.56.116 raj
10.45.56.84 raj
I want to search 10.45.56.84
and 10.81.51.92
in the above file and delete line if pattern matches.
Also i want to do this in single command.
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