MicroPosts

• endoflife.date

  End-of-life (EOL) and support information is often hard to track, or very badly presented. endoflife.date documents EOL dates and support lifecycles for various products.

  Example:

  Need to check what's the latest version of Ruby? Or until when it's supported?

  endoflife.date/ruby

• stdout vs stderr

  Use stdout for the output of your program: the log in git log, the matching files with find, or the list from ls.

  Use stderr for errors AND ANYTHING ELSE: the progress messages, the warns/info, and the jokes (if you really need to).

  For example, given the following output (on stdout):

  I, [2024-12-10T18:59:45.134882 #7388]  INFO -- : Crystalball starts to glow...
  W, [2024-12-10T18:59:45.138463 #7388]  WARN -- : Maps are outdated!
  I, [2024-12-10T18:59:45.311953 #7388]  INFO -- : Starting RSpec.
  {"version":"3.13.2","messages":["No examples found."],"seed":41594,"examples":[],"summary":{"duration":6e-05,"example_count":0,"failure_count":0,"pending_count":0,"errors_outside_of_examples_count":0},"summary_line":"0 examples, 0 failures"}
  

  I had to remove manually the first lines to parse the JSON:

  command | tail -n1 | jq