Creates a skeleton migration file for Sequel in a timestamp format

create_sequel_migration.sh

#!/bin/sh

if [[ "$@" =~ -(-)?h(elp)? ]]
then
  echo ''
  echo 'This script will create a skeleton migration in a given directory for a given name.'
  echo 'It accepts up to two parameters.'
  echo ''
  echo '    1. name of the migration (e.g. table name or description of table alteration)'
  echo '    2. directory for migration (default: db/migrations)'
  echo ''
  echo 'The first parameter is REQUIRED, the second parameter is optional.'
  exit 0
fi

if [ -z $1 ]
then
  echo ''
  echo 'ERROR: you must provide a name for the migration. Use [-h|--help] for more help.'
  echo '  e.g. if you are creating a table, give it the table name to create'
  exit 1
fi

migrations_directory=${2-db/migrations}
migration_name=$1
timestamp=`date +%Y%m%d%H%M%S_`
filename="$migrations_directory/$timestamp$migration_name.rb"
cat > $filename <<EOF
Sequel.migration do
  up do
  end

  down do
  end
end
EOF
echo "created $filename"