错误：EPERM：不允许操作

Question

at the moment I try to develop an ionic-app with Webstorm. But gulp is making some troubles.

Installed Packages:

"gulp": "^3.5.6",
"gulp-concat": "^2.2.0",
"gulp-minify-css": "^0.3.0",
"gulp-rename": "^1.2.0",
"gulp-sass": "^2.1.0"

But when I type gulp or 'ionic serve' in the terminal and run it I get the following error message:

[18:36:00] Using gulpfile ~\app\gulpfile.js
[18:36:00] Starting 'sass'...
stream.js:74
      throw er; // Unhandled stream error in pipe.
      ^

Error: EPERM: operation not permitted, open 'C:\Users\Chef\app\www\css\ionic.app.css'
    at Error (native)

I am using Windows10x64.

I tried the following things but none of it works:

• Run as administrator
• Turn off Avira
• Recreate the file
• Reinstalled gulp

Any advice?

Thanks in advance!

Answer 1

I noticed that I started having this error when I tried to organize permissions on the directories and files on the project.

What I noticed that fixed my problem was giving ownership of the directories/files that Gulp needed to create/rewrite to my user, even if I had those files set as 777 I still got this error, only when I changed the ownership to my user it went away.

I think this probably has something to do with NPM and Gulp being installed on my user home directory (I needed to do something like that so I could run them without sudo). Hope this helps someone.

TL;DR; Setting ownership of directories/files Gulp writes to, to my user, solved the problem for me.

Answer 2

This error indicates that gulp cannot edit (or recreate) the file C:\\Users\\Chef\\app\\www\\css\\ionic.app.css

Check why the your user does not have access to this file or why is the file on a Read-Only state (SVN lock? other?)