tealdeer: Fetch and show tldr help pages for many CLI commands

An interesting tool that just made it into guix. Gives you quick, practical command lists for many command line programs. Example:

christopher@theoden ~$ tldr stty

  Set options for a terminal device interface.
  More information: <https://www.gnu.org/software/coreutils/stty>.

  Display all settings for the current terminal:

      stty -a

  Set the number of rows:

      stty rows rows

  Set the number of columns:

      stty cols cols

  Get the actual transfer speed of a device:

      stty -F path/to/device_file speed

  Reset all modes to reasonable values for the current terminal:

      stty sane