라라벨 Error in plugin 'gulp-notify'

1 문제상황

root@zetawiki:/var/www/laravel# gulp
[00:26:55] Using gulpfile /var/www/laravel/gulpfile.js
[00:26:55] Starting 'default'...
[00:26:55] Starting 'sass'...

Fetching Sass Source Files...
   - resources/assets/sass/zeta.scss


Saving To...
   - ../public/css/zeta.css

[00:26:56] Finished 'default' after 1.31 s
[00:26:57] gulp-notify: [Laravel Elixir] Sass Compiled!
[00:26:57] gulp-notify: [Error in notifier] Error in plugin 'gulp-notify'
Message:
    not found: notify-send
Details:
    code: ENOENT
[00:26:57] Finished 'sass' after 1.71 s
root@zetawiki:/var/www/laravel#

2 gulp-notify 설치

root@zetawiki:/var/www/laravel# npm install -g gulp-notify
gulp-notify@2.2.0 /usr/lib/node_modules/gulp-notify
├── node.extend@1.1.6 (is@3.2.0)
├── through2@0.6.5 (xtend@4.0.1, readable-stream@1.0.34)
├── lodash.template@3.6.2 (lodash.restparam@3.6.1, lodash._basetostring@3.0.1, lodash.templatesettings@3.1.1, lodash._isiterateecall@3.0.9, lodash._basecopy@3.0.1, lodash._basevalues@3.0.0, lodash._reinterpolate@3.0.0, lodash.escape@3.2.0, lodash.keys@3.1.2)
├── node-notifier@4.6.1 (semver@5.3.0, shellwords@0.1.0, growly@1.3.0, minimist@1.2.0, which@1.2.12, lodash.clonedeep@3.0.2, cli-usage@0.1.4)
└── gulp-util@3.0.7 (array-differ@1.0.0, lodash._reescape@3.0.0, array-uniq@1.0.3, lodash._reevaluate@3.0.0, object-assign@3.0.0, lodash._reinterpolate@3.0.0, beeper@1.1.1, replace-ext@0.0.1, minimist@1.2.0, has-gulplog@0.1.0, fancy-log@1.2.0, gulplog@1.0.0, vinyl@0.5.3, chalk@1.1.3, through2@2.0.1, multipipe@0.1.2, dateformat@1.0.12)

3 참고 자료

• https://laracasts.com/discuss/channels/general-discussion/gulp-notify-error-in-notifier-error-in-plugin-gulp-notify-not-found-notify-send