Nick, As Jeff said, we don't know what you tried and what did not work.
There are built-in and probably package versions but have you tried something like list.files()? You can tweak it to get the files you want by doing something like: -change directory to HERE - here.files <- list.files(recursive=TRUE) - change directory to THERE - here.files <- list.files(recursive=TRUE) Now compare what you have in the two places. There are many ways but if all the files in or, if recursive, deeper, are the same, you have them all. Of course this does not test to see if the files are identical. Or you could use sorting and comparing to see if you can isolate what is missing, or use set operations that test for intersection or something like" Missing <- setdiff(here.files, there.files) And in that case, also test the reverse. The function setequal() test for equality but won't tell you what is missing. Obviously, if your method generates full, not relative file names, you could process the names to remove a fixed prefix. -----Original Message----- From: R-help <r-help-boun...@r-project.org> On Behalf Of Nick Wray Sent: Monday, May 20, 2024 9:37 AM To: r-help@r-project.org Subject: [R] Listing folders on One Drive Hello I have lots of folders of individual Scottish river catchments on my uni One Drive. Each folder is labelled with the river name eg "Tay" and they are all in a folder named "Scotland" I want to list the folders on One Drive so that I can cross check that I have them all against a list of folders on my laptop. Can I somehow use list.files() - I've tried various things but none seem to work... Any help appreciated Thanks Nick Wray [[alternative HTML version deleted]] ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code. ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.