Are you adding sudo in front of every command? like this:

cd $FREESURFER_HOME/bin && sudo curl https://raw.githubusercontent.com/freesurfer/freesurfer/dev/scripts/fs_install_mcr -o fs_install_mcr && sudo chmod +x fs_install_mcr

From: freesurfer-bounces@nmr.mgh.harvard.edu <freesurfer-bounces@nmr.mgh.harvard.edu> on behalf of Junyeon Won <won25@umd.edu>
Date: Monday, August 30, 2021 at 11:38 AM
To: Freesurfer support list <freesurfer@nmr.mgh.harvard.edu>
Subject: [Freesurfer] fs_install permission denied

        External Email - Use Caution        

Dear Freesurfer experts,

I was tiring to install fs_install using the below command.

cd $FREESURFER_HOME/bin && curl MailScanner has detected a possible fraud attempt from "secure-web.cisco.com" claiming to be https://raw.githubusercontent.com/freesurfer/freesurfer/dev/scripts/fs_install_mcr -o fs_install_mcr && chmod +x fs_install_mcr

It showed an error message saying permission denied so I added sudo as suggested here.

MailScanner has detected a possible fraud attempt from "secure-web.cisco.com" claiming to be https://www.mail-archive.com/freesurfer@nmr.mgh.harvard.edu/msg66199.html

However, even after adding sudo in front, it shows the same error message. 

  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100  2010  100  2010    0     0  17104      0 --:--:-- --:--:-- --:--:-- 17179
chmod: Unable to change file mode on fs_install_mcr: Operation not permitted

Could you please let me know how to resolve this?

Best,

JW

ᐧ