title: npm install multiple package names
body: <p>What does it do when I run this command:</p>
  
  <pre><code>npm install --save-dev package1 package2
  </code></pre>
  
  <p>It is definitely not installing multiple packages, but it looks to be essential. (For example <a href="https://www.browsersync.io/docs/gulp" rel="noreferrer">https://www.browsersync.io/docs/gulp</a>)</p>
  
  <p>For me it throws following ERRs:</p>
  
  <p><div class="snippet" data-lang="js" data-hide="false" data-console="true" data-babel="false">
  <div class="snippet-code">
  <pre class="snippet-code-html lang-html prettyprint-override"><code>C:\1HLAVNI\Lukas\Webdesign\lukasradek&gt;npm install --save-dev gulp-babel gulp-add-src
  
  &gt; bufferutil@1.1.0 install C:\1HLAVNI\Lukas\Webdesign\lukasradek\node_modules\bufferutil
  &gt; node-gyp rebuild
  
  
  C:\1HLAVNI\Lukas\Webdesign\lukasradek\node_modules\bufferutil&gt;if not defined npm_config_node_gyp (node "C:\Program Files\nodejs\node_modules\npm\bin\node-gyp-bin\\..\..\node_modules\node-gyp\bin\node-gyp.js" rebuild )  else (node "" rebuild )
  gyp ERR! configure error
  gyp ERR! stack Error: Can't find Python executable "python", you can set the PYTHON env variable.
  gyp ERR! stack     at failNoPython (C:\Program Files\nodejs\node_modules\npm\node_modules\node-gyp\lib\configure.js:401:14)
  gyp ERR! stack     at C:\Program Files\nodejs\node_modules\npm\node_modules\node-gyp\lib\configure.js:356:11
  gyp ERR! stack     at FSReqWrap.oncomplete (fs.js:123:15)
  gyp ERR! System Windows_NT 10.0.10586
  gyp ERR! command "C:\\Program Files\\nodejs\\node.exe" "C:\\Program Files\\nodejs\\node_modules\\npm\\node_modules\\node-gyp\\bin\\node-gyp.js" "rebuild"
  gyp ERR! cwd C:\1HLAVNI\Lukas\Webdesign\lukasradek\node_modules\bufferutil
  gyp ERR! node -v v6.3.1
  gyp ERR! node-gyp -v v3.3.1
  gyp ERR! not ok
  npm WARN install:bufferutil@1.1.0 bufferutil@1.1.0 install: `node-gyp rebuild`
  npm WARN install:bufferutil@1.1.0 Exit status 1
  
  &gt; utf-8-validate@1.1.0 install C:\1HLAVNI\Lukas\Webdesign\lukasradek\node_modules\utf-8-validate
  &gt; node-gyp rebuild
  
  
  C:\1HLAVNI\Lukas\Webdesign\lukasradek\node_modules\utf-8-validate&gt;if not defined npm_config_node_gyp (node "C:\Program Files\nodejs\node_modules\npm\bin\node-gyp-bin\\..\..\node_modules\node-gyp\bin\node-gyp.js" rebuild )  else (node "" rebuild )
  gyp ERR! configure error
  gyp ERR! stack Error: Can't find Python executable "python", you can set the PYTHON env variable.
  gyp ERR! stack     at failNoPython (C:\Program Files\nodejs\node_modules\npm\node_modules\node-gyp\lib\configure.js:401:14)
  gyp ERR! stack     at C:\Program Files\nodejs\node_modules\npm\node_modules\node-gyp\lib\configure.js:356:11
  gyp ERR! stack     at FSReqWrap.oncomplete (fs.js:123:15)
  gyp ERR! System Windows_NT 10.0.10586
  gyp ERR! command "C:\\Program Files\\nodejs\\node.exe" "C:\\Program Files\\nodejs\\node_modules\\npm\\node_modules\\node-gyp\\bin\\node-gyp.js" "rebuild"
  gyp ERR! cwd C:\1HLAVNI\Lukas\Webdesign\lukasradek\node_modules\utf-8-validate
  gyp ERR! node -v v6.3.1
  gyp ERR! node-gyp -v v3.3.1
  gyp ERR! not ok
  npm WARN install:utf-8-validate@1.1.0 utf-8-validate@1.1.0 install: `node-gyp rebuild`
  npm WARN install:utf-8-validate@1.1.0 Exit status 1
  lukasradek@1.0.0 C:\1HLAVNI\Lukas\Webdesign\lukasradek
  +-- gulp-add-src@0.2.0
  | +-- event-stream@3.1.7
  | | `-- split@0.2.10
  | +-- streamqueue@0.1.3
  | | `-- readable-stream@1.0.34
  | `-- through2@0.4.2
  |   +-- readable-stream@1.0.34
  |   `-- xtend@2.1.2
  |     `-- object-keys@0.4.0
  `-- gulp-babel@6.1.2
    +-- babel-core@6.13.2
    | +-- babel-code-frame@6.11.0
    | | `-- js-tokens@2.0.0
    | +-- babel-generator@6.11.4
    | | +-- detect-indent@3.0.1
    | | | `-- repeating@1.1.3
    | | `-- lodash@4.14.1
    | +-- babel-helpers@6.8.0
    | +-- babel-messages@6.8.0
    | +-- babel-register@6.11.6
    | | +-- core-js@2.4.1
    | | +-- home-or-tmp@1.0.0
    | | +-- lodash@4.14.1
    | | +-- path-exists@1.0.0
    | | `-- source-map-support@0.2.10
    | |   `-- source-map@0.1.32
    | +-- babel-runtime@6.11.6
    | | `-- regenerator-runtime@0.9.5
    | +-- babel-template@6.9.0
    | | `-- lodash@4.14.1
    | +-- babel-traverse@6.13.0
    | | +-- globals@8.18.0
    | | +-- invariant@2.2.1
    | | | `-- loose-envify@1.2.0
    | | |   `-- js-tokens@1.0.3
    | | `-- lodash@4.14.1
    | +-- babel-types@6.13.0
    | | +-- lodash@4.14.1
    | | `-- to-fast-properties@1.0.2
    | +-- babylon@6.8.4
    | +-- json5@0.4.0
    | +-- lodash@4.14.1
    | +-- minimatch@3.0.2
    | +-- path-exists@1.0.0
    | +-- private@0.1.6
    | +-- shebang-regex@1.0.0
    | `-- slash@1.0.0
    `-- object-assign@4.1.0
  
  npm WARN optional Skipping failed optional dependency /chokidar/fsevents:
  npm WARN notsup Not compatible with your operating system or architecture: fsevents@1.0.14
  npm WARN lukasradek@1.0.0 No repository field.</code></pre>
  </div>
  </div>
  </p>