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 $ git log --since='last month' --author="$(git config user.name)" --oneline

Feb. 25, 2019, 6:57 p.m.Janos

Explanation

  • --since='last month' sets the start of the period, in this case the end of the previous month. Other interesting examples: midnight, 2 weeks ago. When the date parameter contains a space, it must be quoted, naturally.
  • --author="$(git config user.name)" filters commits matching a specific author, in this example yourself, looking up your full name from your Git configuration.
  • --oneline makes the output compactly one line per commit