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\section{Parallel compression}{
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\section{Parallel compression}{
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  That \code{file} can be a connection can be exploited to make use of
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  That \code{file} can be a connection can be exploited to make use of
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  an external parallel compression utility such as \command{pigz}
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  an external parallel compression utility such as \command{pigz}
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  (\url{http://zlib.net/pigz/}) or \command{pbzip2}
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  (\url{http://zlib.net/pigz/}) or \command{pbzip2}
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  (\url{http://compression.ca/pbzip2/}) \emph{via} a \code{\link{pipe}}
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  (\url{https://launchpad.net/pbzip2}) \emph{via} a \code{\link{pipe}}
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  connection.  For example, using 8 threads,
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  connection.  For example, using 8 threads,
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\preformatted{    con <- pipe("pigz -p8 > fname.gz", "wb")
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\preformatted{    con <- pipe("pigz -p8 > fname.gz", "wb")
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    save(myObj, file = con); close(con)
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    save(myObj, file = con); close(con)
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    con <- pipe("pbzip2 -p8 -9 > fname.bz2", "wb")
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    con <- pipe("pbzip2 -p8 -9 > fname.bz2", "wb")