How to find the last field using ‘cut’

by

You could try something like this:

echo 'maps.google.com' | rev | cut -d'.' -f 1 | rev

Explanation

  • rev reverses “maps.google.com” to be moc.elgoog.spam
  • cut uses dot (ie ‘.’) as the delimiter, and chooses the first field, which is moc
  • lastly, we reverse it again to get com

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