Passes the given strings to Runtime.exec() to launch a sub-process.
Options are
:in may be given followed by any legal input source for
clojure.java.io/copy, e.g. InputStream, Reader, File, byte[],
or String, to be fed to the sub-process's stdin.
:in-enc option may be given followed by a String, used as a character
encoding name (for example "UTF-8" or "ISO-8859-1") to
convert the input string specified by the :in option to the
sub-process's stdin. Defaults to UTF-8.
If the :in option provides a byte array, then the bytes are passed
unencoded, and this option is ignored.
:out-enc option may be given followed by :bytes or a String. If a
String is given, it will be used as a character encoding
name (for example "UTF-8" or "ISO-8859-1") to convert
the sub-process's stdout to a String which is returned.
If :bytes is given, the sub-process's stdout will be stored
in a byte array and returned. Defaults to UTF-8.
:env override the process env with a map (or the underlying Java
String[] if you are a masochist).
:dir override the process dir with a String or java.io.File.
You can bind :env or :dir for multiple operations using with-sh-env
and with-sh-dir.
sh returns a map of
:exit => sub-process's exit code
:out => sub-process's stdout (as byte[] or String)
:err => sub-process's stderr (String via platform default encoding)