rcp

ishmael ~ # bastille rcp bastion /test/testfile.txt /tmp/testfile.txt
[bastion]:
/usr/local/bastille/jails/bastion/root/test/testfile.txt -> /tmp/testfile.txt

Unless you see errors reported in the output the rcp was successful.

ishmael ~ # bastille rcp help
Usage: bastille rcp [option(s)] TARGET JAIL_PATH HOST_PATH

    Options:

    -q | --quiet     Suppress output.
    -x | --debug     Enable debug mode.