Background: A month or so ago I purchased an app from a developer with (what seemed to me to be) a decent reputation. The app did not work as expected, so I reached out to tech support, who got back to me within a week with the response (all typos, grammar errors, and other verbal weirdness copied verbatim from the original):
Thank you so much for your kind feedback. And I am truly sorry for it takes a lof of time to locate the reason and find the solution. I sincerely apology for the inconveniences has caused to you.
Our DEV team make further diagnosis and find the solution for you. Would you please give the customized version a try to solve the
Please download and unzip it to give it a new try.
So, okay. I downloaded the file, unzipped it, and launched — only to get the error message:
[App name] is damaged and can’t be opened. You should move it to the Trash.
I wrote back to tech support, reporting the error message. They responded with the following instructions:
Thank you so much for your kind feedback. Given this rare situation, would you please refer to below instructions to solve the problems?
- Please find the “Terminal” option on your computer;
- And then, please Please enter the path below:
sudo xattr -rd com.apple.quarantine / (App location)
After that, please enter the password of your computer. Then, you can use it.
Now, I am almost completely UNIX-illiterate, and I am reluctant to enter any command into Terminal unless I know exactly what it is going to do — and this appears to be a command designed to turn off security measures. Moreover, a little bit of Googling suggests that this command, whatever it does, is usually recommended when getting a permission error (e.g. “You do not have permission to open the application”), which is not the error I am getting.
So my questions:
- What will this command do?
- Is it safe for me to execute it?
- Is it likely to help?
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