启动 R 运行 R 脚本 [英] Run R script with the start up of R

问题描述

我只想在启动 R 时自动运行 R 脚本 example.r我在 centOS 上使用 R 版本 3.2.3

I just want to run an R script example.r automatically when I start R I am using R version 3.2.3 on centOS

我搜索了这个，但我无法弄清楚.

I searched for this but I couldn't figure that out.

推荐答案

R的启动行为可以通过编辑Rprofile.site来修改，可能需要创建，作为默认的R安装不会自动为您执行此操作.在 CentOS 7 上，此文件应位于目录 /usr/lib64/R/etc/ 中；或更一般地说是 $R_HOME/etc/，其中 R_HOME 可以通过从 R 会话运行 Sys.getenv("R_HOME") 来确定.

The startup behavior of R can be modified by editing Rprofile.site, which may need to be created, as the default R installation does not do this for you automatically. On CentOS 7, this file should be located in the directory /usr/lib64/R/etc/; or more generally $R_HOME/etc/, where R_HOME can be determined by running Sys.getenv("R_HOME") from an R session.

例如，如果我修改我的 Rprofile.site 如下，

For example, if I modify my Rprofile.site as follows,

[nathan@xxx] cat /tmp/example.r
x <- 1.5
y <- 2.5
z <- 3.5
t <- Sys.time()

[nathan@xxx] cat /usr/lib64/R/etc/Rprofile.site
options(prompt = "R> ")
options(continue = "  ")
options(stringsAsFactors = FALSE)
options(scipen = 4)

source("/tmp/example.r")

更改将反映在新的 R 会话中:

the changes will be reflected in a new R session:

虽然在这个例子中显然没有必要，但习惯上将这样的代码包装在 .First <- function() { ... } 以确保它在会话启动时立即运行:

Although apparently not necessary in this example, it is customary to wrap such code in .First <- function() { ... } to ensure that it is run immediately upon session startup:

[nathan@xxx] cat /usr/lib64/R/etc/Rprofile.site
options(prompt = "R> ")
options(continue = "  ")
options(stringsAsFactors = FALSE)
options(scipen = 4)

.First <- function() {
    source("/tmp/example.r")
}

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