[R] extract file name from a path string

[John McKown]

Look at "dirname()" and "basename()". The first would be what you call
the path. The second is the file.name without the path.

On Thu, Feb 26, 2015 at 10:58 AM, Luigi Marongiu
<marongiu.luigi at gmail.com> wrote:
> Dear all,
> what code should I write in order to extract the file name from a give
> path? Let's say that I want to get the file "my file.xls" which is in
> the directory/folder "My documents"; since I work both with Windows
> and Linux, the paths I am looking at are in the format:
>
> path.windows<-"\\home$\\lm667\\My Documents\\my file.xls"
> path.linux<-"/home/My Documents/my file.xls"
>
> I used two words for the file name because sometimes the file names
> have multiple words rather than a single one separated by capitals,
> "." or "_".
> The code should now get the file name, which is included between "\\"
> (or "/") and ".xls" but I don't know what regular expression will do
> the trick.
> Once the file name has been assigned to a vector, it should be easy to
> remove it from the path.windows/.linux and obtain a vector with the
> path on its own.
> Essentially the output should be as follows:
>
>> file.name
> [1] "my file.xls"
>> path.w
> [1] "\\home$\\lm667\\My Documents\\"
>> path.l
> [1] "/home/My Documents/"
>
> Thank you,
> Luigi
>
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John McKown