如何用R删除文件? [英] how to delete a file with R?

问题描述

可能重复:
自动删除R中的文件/文件夹

Possible Duplicate:
Automatically Delete Files/Folders in R

我想知道R中是否有办法检查文件是否在我的当前目录中，如果存在，则程序将其删除?

I would like to know if there is a way in R to check up if a file is in my current directory, and if it is there then the program deletes it?

我知道其他语言也可以直接访问OS功能来执行此任务，但是如果R具有这种功能，我有点怀疑.

I know that other languages have direct access to OS functions to do this task, but I am a little bit dubious if R has that capability.

推荐答案

怎么样:

#Define the file name that will be deleted
fn <- "foo.txt"
#Check its existence
if (file.exists(fn)) 
  #Delete file if it exists
  file.remove(fn)

据我所知，这是所有平台上永久的，不可恢复的(即不是移动到回收站")...

As far as I know, this is a permanent, non-recoverable (i.e. not "move to recycle bin") on all platforms ...

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