Running R from cmd on windows

Question

I am trying to install rtools so that I can install another package (Google causalimpact), and the process indicated that I have a problem with my road environment for R.

Main problem

I can not start R from the cmd window.

The expected behavior should be displayed below and give a hint > :

 R version 3.1.1 (blah blah) ... Type 'demo()' for some demos, 'help()' for on-line help, or 'help.start()' for an HTML browser interface to help. Type 'q()' to quit R. 

However, the actual result:

 'C:\Program' is not recognized as an internal or external command, operable program or batch file. 

Additional Information

I can run Rcmd and Rgui (everything except R ) from cmd without errors.

Where R outputs the output C:\Program Files\R\R-3.1.1\bin\x64\R.exe

Where Rcmd outputs the output C:\Program Files\R\R-3.1.1\bin\x64\Rcmd.exe

Where Rgui outputs the output C:\Program Files\R\R-3.1.1\bin\x64\Rgui.exe

Return the same paths as their corresponding EXE files.

This is clearly a problem with my global environment paths, but I cannot understand why this will lead to this error.

The paths look like (path R in the last line):

  c:\Rtools\bin c:\Rtools\gcc-4.6.3\bin C:\RBuildTools\3.1\bin C:\RBuildTools\3.1\gcc-4.6.3\bin c:\Rtools\bin c:\Rtools\gcc-4.6.3\bin C:\Python27\ C:\Python34\ C:\Python34\Scripts C:\Program Files (x86)\Intel\iCLS Client\ C:\Program Files\Intel\iCLS Client\ C:\windows\system32 C:\windows C:\windows\System32\Wbem C:\windows\System32\WindowsPowerShell\v1.0\ C:\Program Files (x86)\Intel\OpenCL SDK\3.0\bin\x86 C:\Program Files (x86)\Intel\OpenCL SDK\3.0\bin\x64 C:\Program Files\Intel\Intel(R) Management Engine Components\DAL C:\Program Files\Intel\Intel(R) Management Engine Components\IPT C:\Program Files (x86)\Intel\Intel(R) Management Engine Components\DAL C:\Program Files (x86)\Intel\Intel(R) Management Engine Components\IPT C:\Program Files (x86)\QuickTime\QTSystem\ c:\Program Files (x86)\Microsoft SQL Server\100\Tools\Binn\VSShell\Common7\IDE\ c:\Program Files (x86)\Microsoft SQL Server\100\Tools\Binn\ c:\Program Files\Microsoft SQL Server\100\Tools\Binn\ c:\Program Files (x86)\Microsoft SQL Server\100\DTS\Binn\ C:\strawberry\c\bin C:\strawberry\perl\site\bin C:\strawberry\perl\bin C:\Program Files\MiKTeX 2.9\miktex\bin\x64\ C:\Program Files\MiKTeX 2.9\miktex\bin\x64\ C:\Program Files\R\R-3.1.1\bin\x64 

I can run Python and Perl by simply typing any name into the CMD window, and as shown in Figure R, I cannot understand the above error.

If anyone has suggestions on how I can fix this error, I would be very grateful.

I did not ask a question of this nature here before all the editorial / pointers were also highly praised.

Raw path:

 PATH=C:\Program Files\R\R-3.1.1\bin\x64;C:\Program Files\R\R-3.1.1\bin\x64;c:\Rt ools\bin;c:\Rtools\gcc-4.6.3\bin;C:\RBuildTools\3.1\bin;C:\RBuildTools\3.1\gcc-4 .6.3\bin;c:\Rtools\bin;c:\Rtools\gcc-4.6.3\bin;C:\Python27\;C:\Python34\;C:\Pyth on34\Scripts;C:\Program Files (x86)\Intel\iCLS Client\;C:\Program Files\Intel\iC LS Client\;C:\windows\system32;C:\windows;C:\windows\System32\Wbem;C:\windows\Sy stem32\WindowsPowerShell\v1.0\;C:\Program Files (x86)\Intel\OpenCL SDK\3.0\bin\x 86;C:\Program Files (x86)\Intel\OpenCL SDK\3.0\bin\x64;C:\Program Files\Intel\In tel(R) Management Engine Components\DAL;C:\Program Files\Intel\Intel(R) Manageme nt Engine Components\IPT;C:\Program Files (x86)\Intel\Intel(R) Management Engine Components\DAL;C:\Program Files (x86)\Intel\Intel(R) Management Engine Componen ts\IPT;C:\Program Files (x86)\QuickTime\QTSystem\;c:\Program Files (x86)\Microso ft SQL Server\100\Tools\Binn\VSShell\Common7\IDE\;c:\Program Files (x86)\Microso ft SQL Server\100\Tools\Binn\;c:\Program Files\Microsoft SQL Server\100\Tools\Bi nn\;c:\Program Files (x86)\Microsoft SQL Server\100\DTS\Binn\;C:\strawberry\c\bi n;C:\strawberry\perl\site\bin;C:\strawberry\perl\bin;C:\Program Files\MiKTeX 2.9 \miktex\bin\x64\;C:\Program Files\MiKTeX 2.9\miktex\bin\x64\;C:\Users\Tariq.Muma n\AppData\Local\Pandoc\ 

Answer 1

Try PATH=C:\Progra~1\R\R-3.1.1\bin\x64;... PATH variable to PATH=C:\Progra~1\R\R-3.1.1\bin\x64;...

It seems very likely that somehow your system parses spaces in Program Files as a trailing character in the path. Adjusting the definition, as indicated above, should make this impossible.

Answer 2

This is due to space. CMD understands: run "C: \ Program" with the argument "Files \ R \ R-3.1.1 \ bin \ x64 \ R.exe".

You must specify the entire line:

 "C:\Program Files\R\R-3.1.1\bin\x64\R.exe" 

... The trick is to drag the exec file into your command windows from your Windows Explorer and you will get the correct line to use.

Answer 3

Depending on how you set your PATH variable, you can use a character limit of 1024 . I tried to cut it and managed to bring it to 1152 characters, deleting long folder names and ending with \ characters. You might want to clear this and remove unused paths, or use some aliases to group your declaration paths.

One direct approach is to edit HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\Environment and edit the PATH value directly (then reboot to activate the new value).

Please note that although you can enter a very long path (up to a maximum environment variable length of 2048 or 32,768 bytes depending on the source), not all software will be able to read and process it correctly if it takes too long.

Answer 4

It is really easy. As for the JDK Path for Java, you set the R path as:

Path = "C: \ Program Files \ R \ R-3.4.2 \ bin \"

in the "Change system environment variables" section of the control panel.
Check if it works!