| tempfile {base} | R Documentation |
Create Names for Temporary Files
Description
tempfile returns a vector of character strings which can be used as
names for temporary files.
Usage
tempfile(pattern = "file", tmpdir = tempdir())
tempdir()
Arguments
pattern |
a non-empty character vector giving the initial part of the name. |
tmpdir |
a non-empty character vector giving the directory name |
Details
If pattern has length greater than one then the result is of the
same length giving a temporary file name for each component of
pattern.
The names are very likely to be unique among calls to tempfile
in an R session and across simultaneous R sessions. The filenames are
guaranteed not to be currently in use.
The file name is made of the pattern and a random suffix in hex. By
default, the filenames will be in the directory given by
tempdir(). This will be a subdirectory of the temporary
directory found by the following rule. The environment
variables TMPDIR, TMP and TEMP are checked in turn
and the first found which points to a writable directory is used:
if none succeeds ‘/tmp’ is used.
Value
For tempfile a character vector giving the names of possible
(temporary) files. Note that no files are generated by
tempfile.
For tempdir, the path of the per-session temporary directory.
References
Becker, R. A., Chambers, J. M. and Wilks, A. R. (1988) The New S Language. Wadsworth & Brooks/Cole.
See Also
unlink for deleting files.
Examples
tempfile(c("ab", "a b c")) # give file name with spaces in!
tempdir() # working on all platforms with quite platform dependent result