[App_rpt-users] copying files between asterisk boxes under program control

Can some guru help me out with a command line instruction that will copy a file from one box to another, in a standard ACID installation? The boxes are behind a common router and have different port numbers for SSH (of course). If any config files changes are required, please show what is needed. Secondly If possible, is there a way to direct the output of this transfer to "stdin" so that it can go directly into another program? Thanks Ken