从命令行运行R命令 [英] Run R command from command line

问题描述

是否可以从命令行运行R命令?像

Is there a way to run an R command from the command line? Something like

$ R --run '1+1'
2

甚至是

$ Rscript < '1+1'
2

推荐答案

命令行选项 -e 正是这样做的.

The command line option -e does exactly that.

Rscript.exe -e "1+1"

[1] 2

如果您仅运行不带参数的 RScript ，则会在您获得的帮助中明确说明:

It is clearly explained in the help which you get if you just run RScript without parameters:

Usage: /path/to/Rscript [--options] [-e expr [-e expr2 ...] | file] [args]

--options accepted are
  --help              Print usage and exit
  --version           Print version and exit
  --verbose           Print information on progress
  --default-packages=list
                      Where 'list' is a comma-separated set
                        of package names, or 'NULL'
or options to R, in addition to --slave --no-restore, such as
  --save              Do save workspace at the end of the session
  --no-environ        Don't read the site and user environment files
  --no-site-file      Don't read the site-wide Rprofile
  --no-init-file      Don't read the user R profile
  --restore           Do restore previously saved objects at startup
  --vanilla           Combine --no-save, --no-restore, --no-site-file
                        --no-init-file and --no-environ

'file' may contain spaces but not shell metacharacters
Expressions (one or more '-e <expr>') may be used *instead* of 'file'
See also  ?Rscript  from within R

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