cat the contents of all elixir files that have changed in a git repo. Useful for hot code swapping

newstuff.sh

#!/usr/bin/env bash

exename=$(basename $0)

function show_help () {
  echo "$exename: cat changed files since a specific commit"
  echo "call it like this: $exename develop"
  echo "where develop is the original branch"
  echo "it will cat all the changed elixir files"
}

if [[ -z "$1" ]]; then

  show_help

else

  cat $(git diff --name-only $1 | grep '**.ex')

fi

oldstuff.sh

#!/usr/bin/env bash

exename=$(basename $0)

function show_help () {
  echo "$exename: cat old files from a specific commit"
  echo "call it like this: $exename develop"
  echo "where 'develop' is the commit/branch/tag you want to use"
  echo "it will cat all the files as they were on that commit"
}

if [[ -z "$1" ]]; then

  show_help

else

  for filename in $(git diff --name-only $1 | grep '**.ex'); do

    git show $1:./$filename

  done

fi