R CMD on Windows 7 Error - “R” is not recognized as an internal or external command,

Question

I\'m exploring package building on Windows 7 but have been running into trouble after reaching the Command Prompt stage. The following thread appears to be on the same topic

Answer 1

In the .bat file add a line of code specifying the path of the folder where R is installed and then give the path of the script as follows -

@ECHO OFF
PATH C:\Program Files\R\R-3.5.1\bin
R CMD BATCH D:\project_abc\helloworld.R

Following this, run the .bat file and you will see the code in the script will run smoothly.

Answer 2

Simple solution, use quotes:

c:> "C:\Program Files\WinZip\wzunzip.exe"

if you run this, you don't need to worry about the space in Program Files.

Hope this help.

Answer 3

I encountered a similar problem while trying to use SparkR from Windows Power Shell. Each time I would do ".\sparkR.cmd" (I was inside the folder containing this file), it would throw an error message like,

cmd is not recognized as an internal and external command...blah...blah...blah.

I solved the problem by adding "C:\Windows\System32" to my PATH.

I restarted my system and then repeated the process and this time, I saw a new error,

R is not recognized as an internal and external command...blah...blah...blah.

I tried all sorts of approaches, including the ones mentioned above. NOTHING WORKED, I was probably wasn't efficient enough to make it work.

Then I came across this place at code.google. I simply copied the R.bat onto a notepad, named it as R.bat. Kept it inside the folder where sparkR.cmd was located. For me it was,

C:\Apache\spark-1.5.1-bin-hadoop2.6\bin\

The I placed it on my PATH as :

C:\Apache\spark-1.5.1-bin-hadoop2.6\bin\R.bat

Restarted my laptop, opened my Power Shell as an administrator and typed :

.\R.bat help

It worked fine. Then I typed,

.\sparkR.cmd

and there it was.

It worked.

I hope it helps to people new to R. Thank you G. Grothendieck.

Answer 4

I attach my whole solution here:

1. Install Rtools which is compatible with my R version
2. Add PATH: C:\Program Files\R\R-2.15.1\bin\x64;C:\Rtools\bin;C:\Rtools\gcc-4.6.3\bin
3. In cmd, enter: R CMD INSTALL packagename

Click "enter", done.

Answer 5

It appears that the CMD processor is Case Sensitive. You have to use INSTALL vs. install

Answer 6

• Have you closed the command prompt and opened a new one after adjusting the PATH?
• Enter the command PATH on the command line and ensure that you are properly updating your path
• Try navigating to the directory where R.exe is saved and running it locally -- cd C:\Program...\bin\x64, R.exe.
• Ensure that you're running on Windows' Command Prompt and not Cygwin's terminal
• If you actually have a space after the semi-colon in your PATH, you'll need to remove that: /bin;C:/Program.... Try combining that with Joshua's solution.