All,
I had a simple function call I used to open up a dos shell running R under
Win XP:
system("cmd.exe", wait=FALSE, invisible=FALSE).
This does not work with R 2.12.1 - I get a window that briefly flashes open
but then disappears. Does anyone know the method to open a DOS command
window in running R with Win XP? Thank you.
Jeff Breiwick
On Fri, Dec 17, 2010 at 4:36 PM, Jeff Breiwick <jeff.breiwick at noaa.gov> wrote:> All, > > I had a simple function call I used to open up a dos shell running R under > Win XP: > system("cmd.exe", wait=FALSE, invisible=FALSE). > > This does not work with R 2.12.1 - I get a window that briefly flashes open > but then disappears. Does anyone know the method to open a DOS command > window in running R with Win XP? Thank you. >This works on my Vista system: shell("start cmd") -- Statistics & Software Consulting GKX Group, GKX Associates Inc. tel: 1-877-GKX-GROUP email: ggrothendieck at gmail.com
Gabor Grothendieck wrote:> On Fri, Dec 17, 2010 at 4:36 PM, Jeff Breiwick <jeff.breiwick at noaa.gov> wrote: >> All, >> >> I had a simple function call I used to open up a dos shell running R under >> Win XP: >> system("cmd.exe", wait=FALSE, invisible=FALSE). >> >> This does not work with R 2.12.1 - I get a window that briefly flashes open >> but then disappears. Does anyone know the method to open a DOS command >> window in running R with Win XP? Thank you. >> > > This works on my Vista system: > > shell("start cmd") > >Is start back in Vista? There was a start.exe in Windows95, but I think it disappeared in XP and I had to write my own. (Or maybe it became an internal command?) Brian Ripley added a similar program "open.exe" (based on the OSX name, I think) to R, so if "start cmd" fails, "open cmd" might succeed. Duncan Murdoch
On Sat, Dec 18, 2010 at 8:07 AM, Duncan Murdoch <murdoch.duncan at gmail.com> wrote:> Gabor Grothendieck wrote: >> >> On Fri, Dec 17, 2010 at 4:36 PM, Jeff Breiwick <jeff.breiwick at noaa.gov> >> wrote: >>> >>> All, >>> >>> I had a simple function call I used to open up a dos shell running R >>> under >>> Win XP: >>> system("cmd.exe", wait=FALSE, invisible=FALSE). >>> >>> This does not work with R 2.12.1 - I get a window that briefly flashes >>> open >>> but then disappears. Does anyone know the method to open a DOS command >>> window in running R with Win XP? Thank you. >>> >> >> This works on my Vista system: >> >> shell("start cmd") >> >> > > Is start back in Vista? ?There was a start.exe in Windows95, but I think it > disappeared in XP and I had to write my own. (Or maybe it became an internal > command?) Brian Ripley added a similar program "open.exe" (based on the OSX > name, I think) to R, so if "start cmd" fails, "open cmd" might succeed. >Yes its in Vista and its at least in XP Pro according to: http://www.microsoft.com/resources/documentation/windows/xp/all/proddocs/en-us/ntcmds.mspx Note that its internal to cmd so if you are using some other command line shell then you will need to do: cmd /c start -- Statistics & Software Consulting GKX Group, GKX Associates Inc. tel: 1-877-GKX-GROUP email: ggrothendieck at gmail.com
On 17/12/2010 4:36 PM, Jeff Breiwick wrote:> All, > > I had a simple function call I used to open up a dos shell running R under > Win XP: > system("cmd.exe", wait=FALSE, invisible=FALSE). > > This does not work with R 2.12.1 - I get a window that briefly flashes open > but then disappears. Does anyone know the method to open a DOS command > window in running R with Win XP? Thank you.This is a new bug in 2.12.1, which I am about to fix in R-patched. The problem was that it was passing a null input stream to cmd.exe, which saw an immediate EOF, and quit. A similar thing happened in Rterm, where system("cmd") should drop into a command shell in the same window, but it would immediately exit. Duncan Murdoch