Written 28 Aug 2026. This is a how-to, not a product card. Buy links are not tagged yet.

Make a leftover-box folder

After SSH works, make a leftover-box folder with mkdir so copies and edits have a place to land. You do not need a NAS for this.

SSH from the couch sits you in a folder. See what's in a leftover-box folder lists names. Move into a leftover-box folder sits you in one that already exists. mkdir is make directory. It creates an empty folder you named, usually in home, so the next copy or edit is not dumped on top of everything else. The leftover box does not need a desktop, a NAS, or a cloud drive for this one job.

Skip until SSH already works

SSH from the couch should already get you a leftover-box prompt. If you only need names, that is see what's in a leftover-box folder. If the folder is already there and you just need to sit in it, that is move into a leftover-box folder. If you only need one file from the laptop, that is copy a file to the leftover box from your laptop. Skip this whole note if the leftover box already has the folder you want.

What this is

mkdir creates an empty folder. It does not copy files into that folder. It does not share the folder with phones and laptops. That is a folder the house can open. It does not measure free disk. That is see if the leftover box still has room. A folder is just a named place. Home gets messy if every scp lands in ~.

Make one folder in home

SSH in. At the leftover-box prompt, start in home if you are not sure:

cd ~

Then make a folder you named. A short name with no spaces is easier to type later:

mkdir ~/notes

The tilde ~ is a short name for your home folder. Swap notes for a name you will remember. Letters, numbers, and a hyphen are enough. Skip spaces tonight. If that folder already exists, the leftover box says so. That is fine. You do not need a second copy of the same name.

See that it is there

List home:

ls ~

You want notes in the list. Optional look at just that folder:

ls -ld ~/notes

The d at the start of the line means directory, which is the leftover box's word for folder. Then sit in it:

cd ~/notes

pwd

You want something like /home/you/notes. An empty folder lists nothing useful. That is the point. You just made a place.

Optional: a folder inside a folder

If you want notes/keep and notes is not there yet, one command can make both:

mkdir -p ~/notes/keep

The -p means make the parents if they are missing, and stay quiet if they already exist. Skip -p tonight if one folder in home is enough. Do not run mkdir under / or /etc. Those are leftover-box system folders. Home is the practice place.

Put something in it

A throwaway file you can delete later:

echo 'hello leftover' > ~/notes/hello.txt

Then:

ls ~/notes

You want hello.txt. Optional edit: edit a leftover-box file from the couch. Optional copy from the laptop into that folder:

scp ./photo.jpg leftover:~/notes/

That is the same scp as copy a file to the leftover box from your laptop, with the folder on the leftover-box side. Swap the filename for yours.

Remove the practice folder if it is empty

If you only wanted a test:

rm ~/notes/hello.txt

Then, only if the folder is empty:

rmdir ~/notes

rmdir refuses if anything is still inside. That is the safe one. Skip rm -r and rm -rf tonight. Those delete a folder and everything in it, with no useful undo. Keep the folder if you are about to copy real files into it.

What this is not

This folder is a name on the leftover box. It is not a house share other computers browse. That is a folder the house can open. It is not a checked backup. That is a backup of the leftover-box folder. Free disk left is still see if the leftover box still has room.

What next

Need to sit in the new folder? Move into a leftover-box folder. Want the names again? See what's in a leftover-box folder. Need a file from the laptop in that folder? Copy a file to the leftover box from your laptop. Need a spare of a leftover-box file that is already there? Copy a leftover-box file without leaving the box. Need to change a file in place? Edit a leftover-box file from the couch. Tired of retyping the same long line? Reuse a leftover-box command you already typed. When key login is boring on every computer you use, turn off leftover-box password login once the key works. Keep SSH on the house network: keep the leftover box on the house network. Do not forward port 22.

Skip

• Skip if SSH still fails. Finish SSH from the couch first.
• Skip buying a NAS, a “cloud drive,” or a file manager app to make one leftover-box folder.
• Skip mkdir /, mkdir /etc, or any folder outside home tonight.
• Skip rm -r and rm -rf until you can live with losing that folder.
• Skip opening SSH to the internet so you can make folders from a coffee shop. That is keep the leftover box on the house network.