set the FILEKVS_DIRECTORY env, and source this file to get a file-based key:value store

.filekvs

# donbattery's poopdb

if [ ! -d "$FILEKVS_DIRECTORY" ]; then
  printf "cannot find poopdb at %s\n" "$FILEKVS_DIRECTORY"
  return
fi

filekvs_get () {
  [ -f "$FILEKVS_DIRECTORY/$1" ] && printf "%s" "$(< "$FILEKVS_DIRECTORY/$1")"
}

filekvs_set () {
  printf "%s" "$2" > "$FILEKVS_DIRECTORY/$1"
}

filekvs_del () {
  [ -f "$FILEKVS_DIRECTORY/$1" ] && rm "$FILEKVS_DIRECTORY/$1"
}