These functions produce a character vector of the names of files or directories in the named directory.
list.files(path = ".", pattern = NULL, all.files = FALSE,
full.names = FALSE, recursive = FALSE,
ignore.case = FALSE, include.dirs = FALSE, no.. = FALSE)<p></p><p> dir(path = ".", pattern = NULL, all.files = FALSE,
full.names = FALSE, recursive = FALSE,
ignore.case = FALSE, include.dirs = FALSE, no.. = FALSE)</p><p>list.dirs(path = ".", full.names = TRUE, recursive = TRUE)</p>| Parameter | Description |
|---|---|
path |
a character vector of full path names; the default corresponds to the working directory, getwd(). Tilde expansion (see path.expand) is performed. Missing values will be ignored. Elements with a marked encoding will be converted to the native encoding. |
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 to give a relative file path. If FALSE, the file names (rather than paths) are returned. |
recursive |
logical. Should the listing recurse into directories? |
ignore.case |
logical. Should pattern-matching be case-insensitive? |
include.dirs |
logical. Should subdirectory names be included in recursive listings? (They always are in non-recursive ones). |
no.. |
logical. Should both "." and ".." be excluded also from non-recursive listings? |
# NOT RUN {
list.files(R.home())
## Only files starting with a-l or r
## Note that a-l is locale-dependent, but using case-insensitive
## matching makes it unambiguous in English locales
dir("../..", pattern = "^[a-lr]", full.names = TRUE, ignore.case = TRUE)
list.dirs(R.home("doc"))
list.dirs(R.home("doc"), full.names = FALSE)
# }