Copyfile fails in R2022a but not in R2021b

I have a fairly large MATLAB driven test system that uses copyfile to place some test specific files into place for runs. On Ubuntu 2004 with MATLAB R2021b, this line

copyfile('/home/djc/gsfcgmat/jazz/test/script/gmatdata','/home/djc/gsfcgmat/TestTarget/GMAT-R2022a-Linux-x64','f')

copies the files into place. On the same system using MATLAB R2022a, the command fails and reports

Error using copyfile

Invalid argument

Why is it failing under MATLAB R2022a?

Answer 1

[Shuba Nandini]

Hello Darrel,

Thanks for reaching us over email. This is a known issue that only appears on some machines, and we currently do not have a workaround for it.

Please try the following steps to diagnose the machine that is having issues:

1) Try to use the system's copy command from MATLAB. You can use the following example:

!cp Firefox_wallpaper.png ../dir2/" 

2) Try using fully qualified URLs, where 'path' is the appropriate full path:

copyfile('file:///path/to/Firefox_wallpaper.png', 'file:///path/dir2/Firefox_wallpaper.png'); 

3) Make sure that 'copyfile' is not shadowed by another function, using command:

which -all copyfile 

4)Check if 'copyfile' command works on both command line and MATLAB command line.

5)Check permissions on Unix using 'la -ls' and change them with 'chmod' if necessary.

6)Try reinstalling the MATLAB.

I hope this helps!

Regards,

Shuba Nandini