/usr/local/bin/grip README.md --title ' ' --wide --export readme.html
sed -i '9i a, :visited, :link { color: red; }' readme.html
# add after <style>
a, :visited, :link { color: red; }

daemon --list

--name ruptimed
--respawn

[x] local unprivileged user
[x] configuration management for client, ucf, see apt-cache rdepends ucf
[x] start script for client (cronjob)
[x] start script for server

rgpu
head -1q /proc/driver/nvidia/gpus/*/information | sort | uniq -c

rlocation

rgps

sed -i "s,localhost,$(hostname -f),g" /etc/ruptime/ruptime.conf



If you have run UNIX twenty or thirty, heck maybe even forty years ago, you might remember
rwho, and ruptime. If you don't, feel free to continue reading and learn about some pretty
cool utility that was not only trying to look good.

This article mostly is addressed at Linux administrators (but macOS as well, or FreeBSD),
but it could as well be interesting for other people.

It's more useful, the more computers you have. And pointless without network, or internet.
So if you are ever confronted with questions like:
- How many computers do I have?
- Which are offline?
- What OS/release are they running?
- Do they need a reboot, because a new kernel was installed on it for some security fix?
- How old are my computers?
- Which computers are used least? Some call it "Screen Time".
- How is the usage of my computers?
- How much disk space do I have on all computers?
- How many packages are managed/installed on them, using what package managers?
- Will it be bloody if I reboot some?
- How much cpu cores, and memory do we have?
- What is the fastest computers?
- What is their network link speeds?
- Do I have to maintain a list of hosts manually?
- Which users are using which hosts?
- Can you run some command on some hosts really fast (alot faster than you can type ansible-playbook)
- Users keep me asking which host they can use, can I delegate the question to them?

Fear not. We have an answer now(tm).

But why?
Mainly because I like simple systems, and consistency. You might want to read about the Lindy effect.
Lazyness, or there's more instersting things to do than answer above questions manually.

The logo reminds me of... Indeed, it was a genious one, and still is. Enjoy figuring this one out yourself.

So back to the original ruptime (rwhod, rwho, ruptime) which used broadcast on UDP/513
and was cleartext over the network, and limited to that one network.

Differences to this new ruptime are
- server/client model
- not considering IPv6 currently
- symmetric encryption of data transfer
- not implemented in C, but very little lines of bash script
- possible to also run on macOS (with some effort)

So how do you run this?
Personal recommendations, your favourite terminal with the agave font, if you have low resolution you can
also try this really small font.
And if you want to look funny, try cool-retro-term.

How can I help? You like it? Star it on https://github.com/alexmyczko/ruptime

If you liked ruptime you might as well like this bunch of shell scripts
https://github.com/alexmyczko/autoexec.bat/tree/master/config.sys

I hope you enjoyed the read, and wish you a sunny day.