#!/usr/bin/env bash
  
  # run this from the top level of the repo, as
  # misc/maintenance/check_usage_messages.sh
  
  set -e
  
  cd src
  
  echo "Any errors reported below must be fixed manually."
  grep 'Usage:' *bin/*.cc | \
      perl -ane '@A = split; $path =$A[0]; $A[0] =~ s|.+/(.+).cc:|$1|; if ($A[0] ne $A[2]) { print "$path: $A[0] ne $A[2]
  "; } '