Hope this mail finds you well, considering the present pandemic scenario across globe.

I have installed FreeSurfer in my PC successfully and I have been following tutorials and freesurfer wiki to learn the basics of it.

I have an image with .nii extension saved in usr/local/freesurfer/subjects directory in ubuntu.

I wanted to use recon-all command for preprocessing the image.nii.

root@ubuntu:/usr/local/freesurfer/subjects# recon-all -s kctest01 -i (the input file.nii) 

the result shows, recon-all: command not found

It would be kind enough if you could please help me out.

 I am also sharing the screen shot of the terminal window I used for this programming, if it would e of any help.

Thank you,

Best regards,

Koustav