I’m sure. But the Linux equivalent to the permissions you posted is rw-. read, write, no execute bit. That’s all that’s needed to write or modify the file in question. The error you’re getting is that it can’t modify the file, which is a file permissions issue. But as noted: if it were a Linux installation, the permissions given would be sufficient. It’s not Linux that’s blocking the setup from changing the file.
real_aurgathor I should not need to modify a rather complex setup program
You don’t. But the program is attempting to open the file for saving, and add to it. That’s “modify”.
real_aurgathor I use Win 8.1.
Been using (occasionally, though) cygwin and Xfig for over 20 years
Ok. Honestly no idea whether the Linux commands exist in Windows 8 - I haven’t daily driven Windows since before Windows 8 released, and my work laptop is on a newer version of the OS (on my work PC, I have SSH agent, openssh, and a bunch of other utilities that I use on the daily included out of the box). But I know that the WSL has been part of Windows since Windows 7. I’m not saying you can’t use cygwin, but I’m wondering if it’s actually the tool you need to do what you’re trying to do. The tell the truth, when I read your post the first thing I did was check Cygwin’s wiki to see when the most recent release was, because I’m kinda surprised it’s even still around given that everything I used to do with it back in the Windows 95/98 era is now doable with WSL.
