.Dd May 17, 2015
.Dt DUPE 1
.Os
.Sh NAME                  
.Nm dupe
.Nd duplicate a file quickly
.Sh SYNOPSIS
.Nm
.Ar original
.Sh DESCRIPTION
This utility is always called by
.Xr portfix 1 ,
but sometimes it is useful in its own right.

.Nm 
takes exactly one argument, a path to a file.  It will duplicate the
.Op original 
file to "<original>.orig" unless there is already an existing file with
this exact name.  In that case, the target file name will be "<original>.intermediate" 
and any existing file of that name will be unconditionally overwritten.
.Pp
.Sh ERRORS
.Nm
will abort if zero or more than one argument is given, or if
.Op original
is not a path to a valid regular file.
.Pp
.Sh SEE ALSO 
.Xr genpatch 1 , 
.Xr portfix 1