> On Aug 19, 2016, at 6:47 AM, PIKAL Petr <[email protected]> wrote: > > Thank you , John. > > As I wanted to use com as abbreviated value for comments it gave me hard > time, especially when the name was not only com1 but "com1.txt". >
Whinges about the behavior of Windows are OT on Rhelp. -- David. > Best regards > Petr > > >> -----Original Message----- >> From: Fox, John [mailto:[email protected]] >> Sent: Friday, August 19, 2016 3:15 PM >> To: PIKAL Petr <[email protected]> >> Cc: [email protected] >> Subject: RE: file.create issue >> >> Dear Petr, >> >> This is a Windows OS issue, not peculiar to R. There are some reserved >> names that can't be used for files, including COM1 (the first serial port). >> Other examples include LPT1 and AUX. Because file names in windows are >> case-insensitive "com1.txt" also causes problems. >> >> I hope this helps, >> John >> >> ----------------------------- >> John Fox, Professor >> McMaster University >> Hamilton, Ontario >> Canada L8S 4M4 >> Web: socserv.mcmaster.ca/jfox >> >> >> >>> -----Original Message----- >>> From: R-help [mailto:[email protected]] On Behalf Of PIKAL >>> Petr >>> Sent: August 19, 2016 9:00 AM >>> To: [email protected] >>> Subject: [R] file.create issue >>> >>> Hi >>> >>> Can anybody explain why one character makes such a difference? >>> >>>> file.create("com1.txt") >>> [1] FALSE >>> Warning message: >>> In file.create("com1.txt") : >>> cannot create file 'com1.txt', reason 'No such file or directory' >>>> file.create("con1.txt") >>> [1] TRUE >>>> >>> >>> It took me quite effort to find out that "com1.txt" is not valid for naming >>> a >> file. >>> >>> BTW I am on Windows, if it matters. >>> >>> Best regards >>> Petr >>> > > ________________________________ > Tento e-mail a jakékoliv k němu připojené dokumenty jsou důvěrné a jsou > určeny pouze jeho adresátům. > Jestliže jste obdržel(a) tento e-mail omylem, informujte laskavě neprodleně > jeho odesílatele. 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David Winsemius Alameda, CA, USA ______________________________________________ [email protected] 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.
