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 libnotify-bin 설치

root@zetawiki:/var/www/laravel# apt-get install libnotify-bin
Reading package lists... Done
Building dependency tree       
Reading state information... Done
The following extra packages will be installed:
  libcanberra-gtk3-0 libcanberra-gtk3-module libnotify4 notification-daemon
The following NEW packages will be installed:
  libcanberra-gtk3-0 libcanberra-gtk3-module libnotify-bin libnotify4
  notification-daemon
0 upgraded, 5 newly installed, 0 to remove and 161 not upgraded.
Need to get 71.1 kB of archives.
After this operation, 478 kB of additional disk space will be used.
Do you want to continue? [Y/n]

... (생략)
Setting up notification-daemon (0.7.6-1) ...
Setting up libcanberra-gtk3-module:amd64 (0.30-0ubuntu3) ...
Processing triggers for libc-bin (2.19-0ubuntu6.7) ...

3 참고 자료

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