| Sys.readlink {base} | R Documentation |
Read File Symbolic Links
Description
Find out if a file path is a symbolic link, and if so what it is
linked to, via the system call readlink.
Symbolic links are a POSIX concept, not implemented on Windows but for most filesystems on Unix-alikes.
Usage
Sys.readlink(paths)
Arguments
paths |
character vector of file paths. Tilde expansion is done:
see |
Value
A character vector of the same length as paths. The
entries are the path of the file linked to, "" if the path is
not a symbolic link, and NA if there is an error (e.g., the
path does not exist).
On platforms without the readlink system call, all elements are
"".
See Also
file.symlink for the creation of symbolic links (and
their Windows analogues), file.info
Examples
##' To check if files (incl. directories) are symbolic links:
is.symlink <- function(paths) isTRUE(nzchar(Sys.readlink(paths), keepNA=TRUE))
## will return all FALSE when the platform has no `readlink` system call.
is.symlink("/foo/bar")