file.exists() and dir.exists()
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Description

The file.exists() and dir.exists() functions come with R and are part of the Base R {base} package.

We use these functions to determine whether a given file (file.exists()) or directory aka folder (dir.exists()) exists. These functions return either TRUE or FALSE and are useful for double-checking if your paths are correct.

Conceptual Usage

file.exists("path/to/file/you/want/to/know/exists.txt")
dir.exists("path/to/directory/you/want/to/know/exists/")