Written 30 Aug 2026. This is a how-to, not a product card. Buy links are not tagged yet.

Shrink one leftover-box file

After SSH works, shrink one leftover-box file with gzip so a leftover-box copy is smaller. You do not need a zip app for this.

Pack leftover-box files into one leftover-box archive packed a leftover-box folder. Tonight you only shrink one leftover-box file. gzip writes a leftover-box .gz next to it. Gzip means leftover-box shrink for one leftover-box file. You are still only practicing in leftover-box home. The leftover box does not need a zip app, a desktop, or a NAS for this one job.

Skip until SSH already works

SSH from the couch should already get you a leftover-box prompt. If you need a leftover-box folder packed first, that is pack leftover-box files into one leftover-box archive. If you only need leftover-box file size, date, and permissions, that is see leftover-box file size, date, and permissions. If you only need a leftover-box copy on the box, that is copy a leftover-box file without leaving the box. Skip this whole note if you only need a house share other computers browse. That is a folder the house can open. Skip if you need a USB copy of the house folder. That is a backup of the leftover-box folder.

What this is

gzip means leftover-box shrink: one leftover-box file into a smaller leftover-box .gz. You type gzip, then a leftover-box path. Night one always adds -k so the leftover-box original stays. Without -k, leftover-box gzip replaces the leftover-box original with the leftover-box .gz. It is not leftover-box pack for a leftover-box folder. That is pack leftover-box files into one leftover-box archive. Optional leftover-box gzip on a leftover-box archive is leftover-box tar -z on that same leftover-box tar note. It is not leftover-box file size, date, and permissions. That is see leftover-box file size, date, and permissions. It is not a leftover-box copy on the box. That is copy a leftover-box file without leaving the box. It is not a copy from your laptop. That is copy a file to the leftover box from your laptop. It is not a download. That is download a file onto the leftover box. It is not a fingerprint. That is check a leftover-box file fingerprint. It is not a careful leftover-box delete. That is delete a leftover-box file carefully. It is not a USB leftover-box backup. That is a backup of the leftover-box folder. It is not a house share other computers browse. That is a folder the house can open.

Shrink a practice file in leftover-box home

SSH in. Make sure leftover-box home is where you are sitting:

pwd

You want a path that ends in your login name. If not:

cd ~

A two-word leftover-box file can get bigger after leftover-box gzip, so make a slightly longer leftover-box practice file. yes repeats one leftover-box line. head -n 40 keeps forty leftover-box lines:

yes 'hello leftover box' | head -n 40 > ~/shrink-me.txt

Look at leftover-box size before leftover-box shrink:

ls -lh ~/shrink-me.txt

Shrink it, and keep the leftover-box original:

gzip -k ~/shrink-me.txt

-k means keep. Night one always keeps the leftover-box original. Compare leftover-box sizes:

ls -lh ~/shrink-me.txt ~/shrink-me.txt.gz

You want a leftover-box .gz that is smaller than leftover-box shrink-me.txt. Optional leftover-box shrink facts:

gzip -l ~/shrink-me.txt.gz

You want leftover-box compressed size, leftover-box uncompressed size, leftover-box ratio, and leftover-box name. Unpack into a leftover-box throwaway folder so you do not overwrite leftover-box home:

mkdir -p ~/unpack-gz

gzip -cd ~/shrink-me.txt.gz > ~/unpack-gz/shrink-me.txt

ls -lh ~/unpack-gz/shrink-me.txt

-c means print. -d means unpack. Together they print the leftover-box original without deleting leftover-box .gz. Redirect into the leftover-box throwaway folder. Do not unpack into /etc.

If leftover-box gzip says already has .gz suffix, you tried to shrink a leftover-box .gz. Leave leftover-box .gz files alone. If leftover-box gzip says No such file or directory, you are not in leftover-box home. pwd, then cd ~, then try leftover-box ~/shrink-me.txt again.

Useful extras, still leftover-box home only

Need leftover-box file size, date, and permissions on the leftover-box .gz?

stat ~/shrink-me.txt.gz

Need leftover-box gzip to talk while it works?

gzip -kv ~/shrink-me.txt

Skip leftover-box gzip without leftover-box -k on a leftover-box file you still need. That leftover-box command replaces the leftover-box original with leftover-box .gz.

Skip leftover-box gunzip as tonight's leftover-box name. Leftover-box gzip -cd into a leftover-box throwaway folder is the same leftover-box job, and leftover-box .gz stays.

Skip leftover-box zip, unzip, 7z, bzip2, xz, and zstd as tonight's leftover-box lesson. Skip leftover-box tar -z here. That leftover-box pack gzip is pack leftover-box files into one leftover-box archive.

Skip leftover-box photos and leftover-box already-shrunk leftover-box files as the leftover-box lesson. Leftover-box text shrinks. Leftover-box JPEG often does not.

Skip leftover-box gzip -r. That leftover-box flag walks leftover-box folders. Night one shrinks one leftover-box file in leftover-box home.

If the leftover box says command not found for leftover-box gzip, install it, then try again:

sudo apt install gzip

Debian and Ubuntu Server usually already have it. That install is not a reason to buy a zip app.

When you are done shrinking, throw away the leftover-box practice files. Careful delete only. That is delete a leftover-box file carefully:

rm -i ~/shrink-me.txt ~/shrink-me.txt.gz

rm -i ~/unpack-gz/shrink-me.txt

Delete leftover-box practice folders the same careful way after they are empty. Skip rm -rf.

What this is not

This is not leftover-box pack for a leftover-box folder. That is pack leftover-box files into one leftover-box archive. It is not leftover-box file size, date, and permissions. That is see leftover-box file size, date, and permissions. It is not a leftover-box copy on the box. That is copy a leftover-box file without leaving the box. It is not a copy from your laptop. That is copy a file to the leftover box from your laptop. It is not a download. That is download a file onto the leftover box. It is not a fingerprint. That is check a leftover-box file fingerprint. It is not a leftover-box folder list. That is see what's in a leftover-box folder. It is not a careful leftover-box delete. That is delete a leftover-box file carefully. It is not a USB leftover-box backup. That is a backup of the leftover-box folder. It is not a house share other computers browse. That is a folder the house can open. It is not opening SSH to the internet so you can shrink leftover-box files from a coffee shop. That is keep the leftover box on the house network.

What next

Need a leftover-box folder packed first? Pack leftover-box files into one leftover-box archive. Need leftover-box file size, date, and permissions? See leftover-box file size, date, and permissions. Need a leftover-box fingerprint? Check a leftover-box file fingerprint. Need a leftover-box download first? Download a file onto the leftover box. Need a leftover-box copy on the box? Copy a leftover-box file without leaving the box. Need one leftover-box file from the laptop instead? Copy a file to the leftover box from your laptop. Need the throwaway gone for real? Delete a leftover-box file carefully. Need a USB leftover-box backup of the house folder? A backup of the leftover-box folder. Need a leftover-box list to drive many leftover-box runs? Run one leftover-box command per leftover-box line. Need leftover-box encode for paste? Encode a leftover-box file so you can paste it. 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 leftover-box files under /etc, SSH folders, or paths you do not own. Practice only in leftover-box home.
• Skip leftover-box gzip without leftover-box -k on a leftover-box file you still need. That leftover-box command replaces the leftover-box original.
• Skip leftover-box zip, unzip, 7z, rar, bzip2, xz, and zstd as tonight's leftover-box lesson. Skip leftover-box tar -z here. That leftover-box pack gzip is pack leftover-box files into one leftover-box archive.
• Skip leftover-box gzip -r, leftover-box photos, leftover-box already-shrunk leftover-box files, leftover-box ISOs, and leftover-box system folders.
• Skip buying a zip app. Debian and Ubuntu already ship leftover-box gzip.
• Skip opening SSH to the internet so you can shrink leftover-box files from a coffee shop. That is keep the leftover box on the house network. Do not forward port 22.
• Skip if you actually need the USB leftover-box backup. That is a backup of the leftover-box folder.