Yup.
Otherwise, I ship rsync w/
KoboStuff if you want to setup an rsyncd on the Kobo, but it's most likely going to be more cumbersome than the SSH approach

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More generally, you seem to be confused about how custom stuff works on the Kobo. There's no "rooting" process involved, we're just co-opting the update process, which is entirely open. And your Kobo already runs Linux

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