Hi John,
Thanks to Jim for pointing out the file.rename() function. You can try this:
# define the filename templates
strIn <- "XYZW--Genesis_ABC.mp3"
strOut <- "01Gen--.mp3"
# create the strings "01", "02", ..., "50"
v <- sapply(1:50, function(i) sprintf("%02d",i) )
# perform all the file renames
for ( s in v ) { file.rename(sub("--",s,strIn), sub("--",s,strOut) ) }
HTH,
Eric
On Thu, Sep 28, 2017 at 1:25 PM, Jim Lemon <drjimle...@gmail.com> wrote:
> Hi John,
> Maybe this:
>
> filenames<-c("XYZW01Genesis_ABC.mp3","XYZW02Genesis_ABC.mp3")
> for(filename in filenames) {
> filefirst<-sapply(strsplit(filename,"[.]"),"[",1)
> fileno<-sub("_","",gsub("[[:alpha:]]","",filefirst))
> file.rename(filename,paste("01Gen",fileno,".mp3",sep=""))
> }
>
> Jim
>
> On Thu, Sep 28, 2017 at 7:37 PM, John <miao...@gmail.com> wrote:
> > Hi,
> >
> > I have 50 files whose names are
> >
> > XYZW01Genesis_ABC.mp3
> > XYZW02Genesis_ABC.mp3
> > .......
> > XYZW50Genesis_ABC.mp3
> >
> > As you can tell, the only difference across the files are 01, 02,
> > 03,....50.
> >
> > I would like to rename them to
> > 01Gen01.mp3
> > 01Gen02.mp3
> > .......
> > 01Gen50.mp3
> >
> > If I store them in one folder and write an R code in that folder, how
> can
> > it be done?
> >
> > Thanks,
> >
> > John
> >
> > [[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.
>
[[alternative HTML version deleted]]
______________________________________________
R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
