After ssh'ing in: $ ssh email@example.com I was going to restore the first 3 of 25 training sites using:
civibuild restore PARM_SITES="01 02 03"
as per the documentation for buildkit at https://github.com/civicrm/civicrm-buildkit/blob/master/doc/civibuild.md#rebuilds and a tip from Tim about the parameter.
However, the civibuild command wasn't available in my path and I couldn't find the file either. I was expecting it to be available on this server. Has it been renamed?