Re: COMMAND FOR CP

[Eric Blake]

> 
> However, if you are using bash or a similar shell, the
> following construct would do what you desire:
> 
> for f in *.GNT; do cp "${f/.GNT}.gnt" ; done

Typo; make that:

for f in *.GNT; do cp "$f" "${f/.GNT}.gnt"; done

Also, you did not mention why you needed to change the
case of the file extensions.  On some systems, where the file
system is case-preserving but case-insensitive (such as
Windows or Mac), the above command may not necessarily
work, since such a file system does not allow both
file1.GNT and file1.gnt in the same directory at once.  On such
a system, you may need to move the original to a temporary
name, then move it again to the new case spelling

-- 
Eric Blake