and feed the data to its standard input
* if *OUTSPEC* begins with a *-* character, use the rest of OUTSPEC as
the filename, but force overwrite any existing file by that name
+ * if *OUTSPEC* begins with a *#* character, use the rest of OUTSPEC as a
+ file descriptor and feed the data to it.
* otherwise write the data the the named file: note that is a file by that
name already exists, a warning is issued and profiling is disabled.