R: List the Files in a Directory/Folder

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

Arguments

path

a vector of full path names.

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.

Value

A character vector containing the names of the files in the specified directory, or "" if there were no files. The files are sorted in alphabetical order, on the full path if full.names = TRUE.

Note

File naming conventions are very platform dependent.

The pattern argument will be ignored (with a warning) when R is compiled without a regular expressions library.

Author(s)

Ross Ihaka

Examples

list.files(R.home())

[Package base version 0.90 ]