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\description{
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\description{
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  \code{unlink} deletes the file(s) or directories specified by \code{x}.
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  \code{unlink} deletes the file(s) or directories specified by \code{x}.
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}
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}
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\details{
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\details{
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  Tilde-expansion (see \code{\link{path.expand}}) is done on \code{x}.
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  Tilde-expansion (see \code{\link{path.expand}}) is done on \code{x}.
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  If \code{recursive = FALSE} directories are not deleted,
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  If \code{recursive = FALSE} directories are not deleted,
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  not even empty ones.
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  not even empty ones.
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#ifdef unix
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#ifdef unix
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  On most platforms \sQuote{file} includes symbolic links, fifos and
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  On most platforms \sQuote{file} includes symbolic links, fifos and
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  sockets.  Prior to \R 2.15.0 \code{unlink(x, recursive = TRUE)} would
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  sockets.  Prior to \R 2.15.0 \code{unlink(x, recursive = TRUE)} would
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  delete the contents of a directory target of a symbolic link: it now
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  delete the contents of a directory target of a symbolic link: it now
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  only deletes the symbolic link (as \code{unlink(x, recursive = FALSE)}
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  only deletes the symbolic link (as \code{unlink(x, recursive = FALSE)}
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  always has).
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  always has).
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#endif
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#endif
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  Wildcard expansion is done by the internal code of
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  Wildcard expansion is done by the internal code of
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  \code{\link{Sys.glob}}.  Wildcards never match a leading \file{.} in
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  \code{\link{Sys.glob}}.  Wildcards never match a leading \file{.} in
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  the filename, and files \file{.} and \file{..} will never be
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  the filename, and files \file{.} and \file{..} will never be
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  considered for deletion.
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  considered for deletion.
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#ifdef unix
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#ifdef unix
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  \code{\link{file.remove}}).  If a wildcard matches
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  \code{\link{file.remove}}).  If a wildcard matches
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  nothing it is considered as a literal character.
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  nothing it is considered as a literal character.
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  Windows cannot remove the current working directory, nor any file
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  Windows cannot remove the current working directory, nor any file
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  which is open nor any directory containing such a file.
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  which is open nor any directory containing such a file.
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  UTF-8-encoded paths not valid in the current locale can be used.
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  UTF-8-encoded paths not valid in the current locale can be used.
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#endif
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#endif
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}
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}
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\value{
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\value{
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  \code{0} for success, \code{1} for failure, invisibly.
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  \code{0} for success, \code{1} for failure, invisibly.