list.files {base} | R Documentation

## List the Files in a Directory/Folder

### Description

This function produces a list containing the names of files in the named directory. `dir` is an alias.

### Usage

    list.files(path = ".", pattern = NULL, all.files = FALSE,
               full.names = FALSE, recursive = FALSE)
           dir(path = ".", pattern = NULL, all.files = FALSE,
               full.names = FALSE, recursive = FALSE)

### Arguments

`path` | a character vector of full path names; the default corresponds to the working directory `getwd()`.
`pattern` | an optional regular expression. Only file names which match the regular expression will be returned.
`all.files` | a logical value. If `FALSE`, only the names of visible files are returned. If `TRUE`, all file names will be returned.
`full.names` | a logical value. If `TRUE`, the directory path is prepended to the file names. If `FALSE`, only the file names are returned.
`recursive` | logical. Should the listing recurse into directories?

### Value

A character vector containing the names of the files in the specified directories, or `""` if there were no files. If a path does not exist or is not a directory or is unreadable it is skipped, with a warning.
The files are sorted in alphabetical order, on the full path if `full.names = TRUE`.

### Note

File naming conventions are very platform dependent.

`recursive = TRUE` is not supported on all platforms, and may be ignored, with a warning.

### Author(s)

Ross Ihaka, Brian Ripley

### See Also

`file.info`, `file.access` and `files` for many more file handling functions and `file.choose` for interactive selection.

### Examples

    list.files(R.home())
    ## Only files starting with a-l or r (*including* uppercase):
    dir("../..", pattern = "^[a-lr]",full.names=TRUE)

[Package base version 2.1.1 Index]