Dump RC descriptions as markdown

freebsd_dump_rc.sh

#!/bin/sh

VARIABLES=$(sysrc -NA)

for item in $VARIABLES
do
  DESCRIPTION=$(sysrc -d $item | perl -pe 's@^([^:]+): (.*)@$2@')
  DEFAULT=$(sysrc -Dn $item)

  if [ -z "$DESCRIPTION" ]; then
    continue
  fi
  
  if [ -z "$DEFAULT" ]; then
    DEFAULT=empty
  else
    DEFAULT=\`$DEFAULT\`
  fi
  
  echo "## \`$item\` (default: $DEFAULT)"
  echo $DESCRIPTION
  echo ""
done

See https://gist.github.com/raspi/852de67b16b6187debd1c7220cd811c8