pyenv/bin/rbenv-which

#!/usr/bin/env bash -e

RBENV_VERSION="$(rbenv-version)"
RBENV_COMMAND="$1"
RBENV_COMMAND_PATH="${HOME}/.rbenv/versions/${RBENV_VERSION}/bin/${RBENV_COMMAND}"

if [ -x "$RBENV_COMMAND_PATH" ]; then
  echo "$RBENV_COMMAND_PATH"
else
  echo "rbenv: $1: command not found" >&2
  exit 127
fi