从 Windows 命令行运行 R 代码的单行代码

Question

I Want a single line code to run a shiny app from windows command line without opening the R application.

If I open the R from cmd and run the code it works. But it gives error for the following single line code.

R -e 'shiny::runApp(system.file("examples/01_hello", package="shiny"), launch.browser = T)'

............
............
> 'shiny::runApp(system.file(examples/01_hello,
+
+ Error: unexpected end of input
Execution halted

Please help. Thanks..

Answer 1

The following code is working:

RScript -e "shiny::runApp(system.file('examples/01_hello', package='shiny'), launch.browser = T)"

I have made two changes:

1. Replace R by RScript
2. Interchange single and double quotes

Answer 2

您可以尝试在 Windows 命令提示符下，单引号不适用于这种情况。

R -e "shiny::runApp(system.file("'examples/01_hello'", package="'shiny'"), launch.browser = T)"

Answer 3

You can try in cmd something like this (for example)

> "C:\Program Files\R\R-3.5.0\bin\i386\Rscript.exe" ".\app.R"

Inside app.R i have, so it is runs shiny app

shinyApp(
  ui = ui,
  server = server,
  options = list(launch.browser = T))