Renaming a file the same as a variable

I am trying to rename a file the same as a variable. The variable obviously will be string, its just so I can make my program even more automated. For example :

x = 'RenameTest'
movefile('Original.txt', '%s.txt', x)

That code doesn't work but is this possible to do?

[Peter Gruber]

You are amost there. The right way to do it is

x = 'RenameTest'
movefile('Original.txt', [x '.txt'])

or, if you really want to use the formatting string (not really needed)

x = 'RenameTest'
movefile('Original.txt', sprintf('%s.txt', x))

[Tyler Murray]

Thanks Peter! Works great!

Answer 1

[dpb]

As written, just

 movefile('Original.txt', [x '.txt'])

More general and where you were probably trying to head would be something like

outfile=sprintf('%s.txt',newfilebase);
movefile(oldfile,outfile)

where oldfile is a string variable containing the original name.

[Tyler Murray]

Thanks dpb!