railsの新規アプリ作成におけるエラー

Question

＊つまづいていること
railsで新規アプリを作成しようと以下のコマンドを打つとエラーが出ます。

rails _5.2.2 new hello_app

＊出てくるエラー

Usage:
  rails new APP_PATH [options]

Options:
      [--skip-namespace], [--no-skip-namespace]            # Skip namespace (affects only isolated applications)
  -r, [--ruby=PATH]                                        # Path to the Ruby binary of your choice
                                                           # Default: /Users/keisuke713/.rbenv/versions/2.6.1/bin/ruby
  -m, [--template=TEMPLATE]                                # Path to some application template (can be a filesystem path or URL)
  -d, [--database=DATABASE]                                # Preconfigure for selected database (options: mysql/postgresql/sqlite3/oracle/frontbase/ibm_db/sqlserver/jdbcmysql/jdbcsqlite3/jdbcpostgresql/jdbc)
                                                           # Default: sqlite3
      [--skip-yarn], [--no-skip-yarn]                      # Don't use Yarn for managing JavaScript dependencies
      [--skip-gemfile], [--no-skip-gemfile]                # Don't create a Gemfile
  -G, [--skip-git], [--no-skip-git]                        # Skip .gitignore file
      [--skip-keeps], [--no-skip-keeps]                    # Skip source control .keep files
  -M, [--skip-action-mailer], [--no-skip-action-mailer]    # Skip Action Mailer files
  -O, [--skip-active-record], [--no-skip-active-record]    # Skip Active Record files
      [--skip-active-storage], [--no-skip-active-storage]  # Skip Active Storage files
  -P, [--skip-puma], [--no-skip-puma]                      # Skip Puma related files
  -C, [--skip-action-cable], [--no-skip-action-cable]      # Skip Action Cable files
  -S, [--skip-sprockets], [--no-skip-sprockets]            # Skip Sprockets files
      [--skip-spring], [--no-skip-spring]                  # Don't install Spring application preloader
      [--skip-listen], [--no-skip-listen]                  # Don't generate configuration that depends on the listen gem
      [--skip-coffee], [--no-skip-coffee]                  # Don't use CoffeeScript
  -J, [--skip-javascript], [--no-skip-javascript]          # Skip JavaScript files
      [--skip-turbolinks], [--no-skip-turbolinks]          # Skip turbolinks gem
  -T, [--skip-test], [--no-skip-test]                      # Skip test files
      [--skip-system-test], [--no-skip-system-test]        # Skip system test files
      [--skip-bootsnap], [--no-skip-bootsnap]              # Skip bootsnap gem
      [--dev], [--no-dev]                                  # Setup the application with Gemfile pointing to your Rails checkout
      [--edge], [--no-edge]                                # Setup the application with Gemfile pointing to Rails repository
      [--rc=RC]                                            # Path to file containing extra configuration options for rails command
      [--no-rc], [--no-no-rc]                              # Skip loading of extra configuration options from .railsrc file
      [--api], [--no-api]                                  # Preconfigure smaller stack for API only apps
  -B, [--skip-bundle], [--no-skip-bundle]                  # Don't run bundle install
      [--webpack=WEBPACK]                                  # Preconfigure for app-like JavaScript with Webpack (options: react/vue/angular/elm/stimulus)

Runtime options:
  -f, [--force]                    # Overwrite files that already exist
  -p, [--pretend], [--no-pretend]  # Run but do not make any changes
  -q, [--quiet], [--no-quiet]      # Suppress status output
  -s, [--skip], [--no-skip]        # Skip files that already exist

Rails options:
  -h, [--help], [--no-help]        # Show this help message and quit
  -v, [--version], [--no-version]  # Show Rails version number and quit

Description:
    The 'rails new' command creates a new Rails application with a default
    directory structure and configuration at the path you specify.

    You can specify extra command-line arguments to be used every time
    'rails new' runs in the .railsrc configuration file in your home directory.

    Note that the arguments specified in the .railsrc file don't affect the
    defaults values shown above in this help message.

Example:
    rails new ~/Code/Ruby/weblog

    This generates a skeletal Rails installation in ~/Code/Ruby/weblog.

＊試したこと

bundle exec rake rails:update:bin

を打ち込んだら

Could not locate Gemfile or .bundle/ directory

とエラーが出ました。

＊環境
ruby 2.6.1p33 (2019-01-30 revision 66950) [x86_64-darwin17]
rails 5.2.2
です。

よろしくお願いします。

＊補足
バージョンを指定しなかったら、成功しました。

Answer 1

$ rails _5.2.2 new hello_app

正しくは

$ rails _5.2.2_ new hello_app

バージョン指定の最後の_が抜けています。

Comments

[keisuke713]

_を加えても同じエラーが出ます。

[退会済みユーザー]

手元では問題なく作成されるので再現が取れません。

Answer 2

_とnewの間にspaceを入れる

Comments

[退会済みユーザー]

僕の回答に不備はなかったと思いますが...