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I don’t see what FREESURFER _HOME is set to, but if you used the .deb package installer, it would be /usr/local/freesurfer/7.4.0, i.e. $ wget  https://secure-web.cisco.com/1vzo5wK6ItFFFMnllsCMKRTIzcqYXDSETeXibiyz78VEk_T... sudo apt-get install ./freesurfer_ubuntu22-7.4.0_amd64.deb… answer yes to all queries ….,.. output deleted ... $ export FREESURFER_HOME=/usr/local/freesurfer/7.4.0$ source $FREESURFER_HOME/SetUpFreeSurfer.sh … output deleted … $ which recon-all /usr/local/freesurfer/7.4.0/bin/recon-all $ recon-all -version  freesurfer-linux-ubuntu22_x86_64-7.4.0-20230510-e558e6e If you used the tar file instead, then some permissions might not be correct depending upon how/where it was unarchived (and some dependencies might be missing). - R.

On Jan 19, 2024, at 15:20, Peled, Noam,PhD <NPELED@mgh.harvard.edu> wrote:I'm just trying now to run the "recon-all -version", also without any arguments. Both produce the same error.Thanks!NoamFrom: freesurfer-bounces@nmr.mgh.harvard.edu <freesurfer-bounces@nmr.mgh.harvard.edu> on behalf of Huang, Yujing <YHUANG43@mgh.harvard.edu>Sent: Friday, January 19, 2024 3:10 PMTo: Freesurfer support list <freesurfer@nmr.mgh.harvard.edu>Subject: Re: [Freesurfer] recon-all cannot execute: required file not found I’m wondering how you ran recon-all.  Do you see the error even running it w/o any arguments? From: freesurfer-bounces@nmr..mgh.harvard.edu <freesurfer-bounces@nmr.mgh.harvard.edu> On Behalf Of Peled, Noam,PhDSent: Friday, January 19, 2024 2:59 PMTo: Freesurfer support list <freesurfer@nmr.mgh.harvard.edu>Subject: Re: [Freesurfer] recon-all cannot execute: required file not found Thanks Yujing,Yes, I looked for the file permissions using ls -l. It does have execute permissions.I also tried running chmod which didn't help.. Thanks,NoamFrom: freesurfer-bounces@nmr.mgh.harvard.edu <freesurfer-bounces@nmr.mgh.harvard.edu> on behalf of Huang, Yujing <YHUANG43@mgh.harvard.edu>Sent: Friday, January 19, 2024 2:54 PMTo: Freesurfer support list <freesurfer@nmr.mgh.harvard.edu>Subject: Re: [Freesurfer] recon-all cannot execute: required file not found After sourcing Freesurfer, $FREESURFER_HOME is added to the front of your $PATH. 1. ‘ls -l $FREESURFER_HOME/bin/recon-all’ to check if your recon-all has the execute permissions?2. use ‘chmod +x $FREESURFER_HOME/bin/recon-all’ to grant the permission  Best, Yujing From: freesurfer-bounces@nmr.mgh.harvard.edu <freesurfer-bounces@nmr.mgh.harvard.edu> On Behalf Of Peled, Noam,PhDSent: Friday, January 19, 2024 2:42 PMTo: freesurfer@nmr.mgh.harvard.eduSubject: [Freesurfer] recon-all cannot execute: required file not found Dear group,I'm trying to run Freesurfer on digitalOcean server running Ubuntu 22.10 (GNU/Linux 5.19.0-46-generic x86_64)I Downloaded freesurfer 7.4.0 (freesurfer-linux-ubuntu22_x86_64-7.4.0-20230510-e558e6e)After sourcing Freesurfer, recon-all gives following error:.../freesurfer/bin/recon-all: cannot execute: required file not found Other functions, e.g. freeview, mri_info, all seem to work as expected Would love some help.Thanks,Noam  _______________________________________________Freesurfer mailing listFreesurfer@nmr.mgh.harvard.eduhttps://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer