(B)(O)(C) <=> Bag Of Comments
(O)ccasionally about progress
(C)olaterally including facts

more or less stealthy starting to acclimatise in irc.tilde.chat.

see crontab and ~/.screenrc.cron-autostart

crontab -l | fgrep screen 

@reboot		./bin/screen -c ~/.screenrc.cron-autostart -O -U -dmS `hostname`

I do it in a similar way @home on lots of systems but on tilde.institute the reboot still needs a test… ;-)

joined tilde IRC channels as seen in default ~/.weechat/irc.conf with weechat@home

##++
## new PS1
##
## needs to fall back to simple prompt if TERM!=screen or emacs/tramp
## will fail.
##
case $TERM in
    screen)
	HOST=$(hostname)
	TTY=$(tty)
	LYN="${TTY##/dev/tty}"
	PS1='\[\ek(\u@$HOST:$LYN)\w\$ _\e\134\](\u@$HOST:$LYN)\w\$ '
	;;
    *)
	PS1="`whoami`@`hostname` \$ "
	;;
esac
##--

(\u@$HOST:$LYN)\w\$ ' is just classic ksh stuff.

\[\ek(\u@$HOST:$LYN)\w\$ _\e\134\] sets screen's buffer (window?) title to look like the current shell prompt.

N.b.: \\ needed to be transliterated to \134.

Then screen's buffer (window?) (type: ctrl-a ") looks like follows (empty lines at the end omitted):

Num Name                                                                  Flags

  0 (yeti@tilde.institute:pb)~/public_html$ _                                  
  1 (yeti@tilde.institute:pn)~$ _                                              

An other example from @home:

Num Name                                                                  Flags

  0 WeeChat 2.5                                                               $
  1 (yeti@cubietruck1:1)~$ _                                                  $
  8 (yeti@cubietruck1:2)~/Sync/radio$ _                                       $
  9 alsamixer                                                                 $
 41 (yeti@kumari:39)~/gitlab/hive-trios$ _                                    $
 42 (yeti@tilde.institute:pi)~/public_html$ _                                 $
 99 syncthing                                                                 $

<marvin martian voice>
Uuuuh! Isn't this delightful?
</marvin martian voice>

On my main workhorse I typically keep ±30 screen buffers at hand.
I rrreally like this hack(?)!
\o/

enable sh blocks.

~/public_html is purely optional and CGIs should™ work:

cat /etc/httpd/$USER.conf

server "yeti.tilde.institute" {
	listen on $ext_addr port 80 block return 301 "https://$SERVER_NAME$REQUEST_URI"
    }
    server "yeti.tilde.institute" {
		listen on $ext_addr tls port 443
		root "/users/yeti"
	tls {
	    key "/etc/letsencrypt/live/tilde.institute-0001/privkey.pem"
	    certificate "/etc/letsencrypt/live/tilde.institute-0001/fullchain.pem"
	}
		directory index index.html
		directory auto index
		location "/*.cgi" {
			fastcgi
		}
		location "/*.php" {
			fastcgi socket "/run/php-fpm.sock"
		}
	}

alias emacs 'find-file-other-window $1'

##++
## I'm a hardcore UTC/GMT citizen!
##
TZ=UTC
export TZ
##--

Check current setting:

date

built screen-4.8 (to live in ~/bin) because OpenBSD-6.5's…

Screen version 4.00.03 (FAU) 23-Oct-06

…has problems with UTF-8.

drwxr-xr-x    9 yeti  tilde   1024 Feb 26 18:22 ./

is this neccessary?

now trying 700 until something breaks.
I'm 🕉ptimistic that no such thing will happen. ;-)

drwx------    9 yeti  tilde   1024 Feb 26 19:00 ./

Chiselled a bit to kind of give this org file a readable layout and colouring.

More in Nah! I'm not an artist! (II).

• (Hackaday) LoRa Mesh Network With Off-the-Shelf Hardware may have influence on my dreams of lots of networked small nixens. LoRa might be enough for short message like services and maybe some administrative broadcasts like announcing new nodes but for higher bandwidth needs other transport will be needed.
• (Hackaday) Raspberry Pi 4 Offers Up 2 GB For The Price Of One mentiones the possibility of an 8 GB RAM PI4 again. The older hints about this were discused in (Hackaday) Is 4 GB The Limit For The Raspberry Pi 4? and maybe we'll see them soon?

Noticed. Maybe it'll be of use somewhen but generally I prefer doing my stuff in an XTerm…

… might overlap with my ideas of lots of connected (meshed?) mini nixens (see tilde2tilde). I'll keep an eye on pocket-tilde.

In a different text I'm fermenting some ideas for a network of tildes. Central focus shall be communication in this community and who prefers it shall be able to run a t2t node only reachable in I2P, tor's onion space or other transports. Communication with the normal internet shall be optional.

The idea to call it tilde2tilde or short t2t is new today.

More later…

I'll dive into this and its siblings later.

https://intranet.tildeverse.org

An interesting OS, an unbearable UI.

Maybe some Plan9 and 9Front tildes would be the right place to collecively moarn this contrast?

Or do they already exist?

The tildeverse surprises me nearly every day with already existing stuff.

https://github.com/brunompena/zsun-resources/releases/tag/19.07.2

OpenWrt 19.07.2 r10947-65030d81f3 / LuCI openwrt-19.07 branch git-20.057.55219-13dd17f

• [X] zsun0 - backup / update 19.07.0 to 19.07.2 / backup
• [X] zsun1 - backup / update 19.07.0 to 19.07.2 / backup

I really should do something funny with these cuties!

[Carlo Posti] missed me this morning. So an additonal Pi1-B+ awaits me at the post office tomorrow.

In org-9.1.9:

| #+BEGIN_SRC sh :results output org
| for i in $(seq 3) ; do
|  echo "* sec $i"
|  echo "  moo $i"
| done
| #+END_SRC
| 
| #+RESULTS:
| #+BEGIN_SRC org
| ,* sec 1
|   moo 1
| ,* sec 2
|   moo 2
| * sec 3
|   moo 3
| #+END_SRC

I can't see why the last heading is not ","-quoted. :-(

More in Emacs Org Babel Mystery? (II).

Works! \o/

Today no time for more. :-(

This one (Pi1-5) will join "the house of RasPIan" with the other newcomer (Pi1-4) still wating for the final OS install.

Their job is keeping me in touch with RasPIan on ARMEL and occasionally doing some tasks where low power is more important than a big oomph like (outdoor) distance tests with some transceivers (HC-12, LoRa, …) as soon as the weather is nicer again.

Both got 2020-02-13-raspbian-buster-lite.

…with typical user-crontab to start screen with ~/.screen.cron-autostart where htop already is and other "services" will be wired to get their autostart.

2020-03-06 14:08:45 in irc.freenode.net #devuan-dev, LeePen wrote:

Hi. beowulf arm64 mini.iso and debian-installer images now available: https://pkgmaster.devuan.org/devuan/dists/beowulf/main/installer-arm64/current/images/

Switch to classic /etc/network/interfaces style net setup.

Whaaaat? Why does

rfkill: cannot open /dev/rfkill: Permission denied
rfkill: cannot read /dev/rfkill: Bad file descriptor

show up now, or did I just overlook it previously?

(yeti@pi1-5:2)~$ ls -l /dev/rfkill 
crw------- 1 root root 10, 242 Mar  8 11:02 /dev/rfkill

I've seen that stuff before but I forgot cause and solution.

🕉mmmmmm… laaaaaateeeeeer…

• w3m because w3mman
• syncthing
  • launched via screen-autostart:
    screen 99 ionice -c3 nice -19 syncthing
    for being nice to the 700MHz ARMish CPUs.
  • syncing the usual ~/Sync

• install tor and the usual hidden ssh port
• test using HiddenServiceVersion 2|3 to have ssh on both onion address types

I test built V on Devuan3/armhf…

(yeti@cubietruck1:5)/tmp/v$ ./v --help
V error: `--help` has been deprecated. Use `-help` instead.
(yeti@cubietruck1:5)/tmp/v$ ./v -help
Use `v help` for usage information.
(yeti@cubietruck1:5)/tmp/v$ █

Rly?
Meh!
apt-get moo and aptitude moo are more fun!

Continuation from Nah! I'm not an artist! (I).

Played a bit more with colours for this text.

The colours probably will change again, so here a snapshot:
20200310-184955-UTC__NAH-II.png

More in Nah! I'm not an artist! (III).

Leo(-editor) could definitely be interesting if it weren't GUI-only. :-(

For my stuff (in most cases notes about programming languages) currently done in nearly 100% plain org/babel a more networked representation or navigaion would be nice but I fear losing the org/babel features when switching to a classic wiki.

Lookig at org-brain the lack of exports repells me.

Should I switch from plain org/babel to org-wiki?

I still need more input to decide this.

Maybe I can do more with plain org/babel macros like turning a list of targets (e.g. properties⟶related) into a navigation line below a section heading? Diving deeper in plain org/babel sure will not be lost time.

🕉mmmmmm…

…see https://en.wikipedia.org/wiki/Data_URI_scheme#Examples_of_use

The red dot from the wikipedia example: @@html:<img src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAUAAAAFCAYAAACNbyblAAAAHElEQVQI12P4//8/w38GIAXDIBKE0DHxgljNBAAO9TXL0Y4OHwAAAABJRU5ErkJggg==" alt="Red dot"/>@@

Yields:

The red dot from the wikipedia example:

We'll see if that will have some impact…

…probably capturing files at export time as DATA URIs is more what I would need.

More in DATA URI in org/babel (II).

…you know, that I want an Org/Babel-PDA!

https://pocket.popcorncomputer.com

Ordered a flux pen weeks ago. Seller and shop claimed to be in Paris. Paris to Germany would be fast, I thought. The pen did not arive within the claimed time, so I got a refund. A week later the pen arives. Coming from mainland China!

If he'd been honest about the long distance, I'd have bought it nearer to home.

Ok, he'll get his money. But that will be the last tansaction with this cheater!

This morning $THEY will change our electricity meters. That shall last only 20 minutes per meter but when it might happen is given as a not exaclty a tiny range of hours.

I'm, not amused!

Whats new in the Pi universe this Pi day?
What do I miss?
I dont see new stuff or anounces.

More in 2019-nCoV Data (II).

This Pi1-B+ was replaced by a Pi4 somewhere else and so was looking for a new home, tasks and friends.

Here it shall get a case with a 480x320 touchscreen. I hope, they'll like each other.

If halfway useable for that task, they shall help playing with various transceivers.

I thought, 700MHz will be enough for something mobile with a small display, while more uuumph won't help there and just would drain the battery faster.

It'll get it's welcome party tomorrow…

Just a test with a SD card borrowed from one of the other Pis. I wasn't in the mood for much more.

https://dev1galaxy.org/viewtopic.php?pid=20509#p20509

On …

~$ date   
Mon Mar 16 08:05:26 UTC 2020
~$ uname -a       
OpenBSD tilde.institute 6.5 GENERIC.MP#8 amd64

… with …

~$ emacs --version | head -1
GNU Emacs 26.1

… and only the default packages archive config …

Hide Package Archives:
[INS] [DEL] Archive name: gnu
            URL or directory name: http://elpa.gnu.org/packages/

… updating the packages list yields …

Failed to verify signature archive-contents.sig:
No public key for 066DAFCB81E42C40 created at 2020-03-15T21:05:02+0000 using RSA
Command output:
gpg: Signature made Sun Mar 15 21:05:02 2020 UTC
gpg:                using RSA key
C433554766D3DDC64221BFAA066DAFCB81E42C40
gpg: Can't check signature: No public key

… while using only …

Hide Package Archives:
[INS] [DEL] Archive name: melpa
            URL or directory name: http://melpa.org/packages/

… works as expected.

Same problem on SDF/NetBSD8.

At home on Debian10 and Devuan3 …

~$ emacs --version | head -1
GNU Emacs 26.1

… using http://elpa.gnu.org/packages/ does not cough.

Should I understand this?

Continuation from Nah! I'm not an artist! (II).

I removed font-variant:small-caps from headings. Maybe I'll somewhen ditch using different sizes too.

The colours stay unchanged for now but I'm starting to question the current set of colours because the darker tones of this amber look a bit brownish. Maybe plain greyscale would be less distracting?

It's all in flux, so here again a snapshot:
20200317-131700-UTC__NAH-III.png

More in Nah! I'm not an artist! (IV).

So far my Pis just are used to follow some OSes. They are numbered pi{1..3}-{0..$X} where the 1st component is the Pi's board type and the 2nd component kind of codes the OS.

Two Pis per arch and OS. They are kind of software lab guinea pigs.

The Pi1 newcomer shall be used for hardware tinkering istead of feeding my OS curiousity and that doesn't fit the scheme above. I decided to name it pi1-a for now. Maybe I'll get a better idea later.

pi1-a got Raspbian/Buster today, will get a 480x320 touchscreen later, and one of its 1st jobs will be help with experimenting with transceivers.

Welcome to the Emacs shell

~ $ which rmail
rmail is an interactive autoloaded compiled Lisp function in ‘rmail.el’.
~ $ rmail
usage: rmail [-T] [-D domain] user ...

Looks like despite rmail.el exists OpenBSD's rmail is preferred.

~ $ (rmail)

That way rmail.el launches.

First I thought I'd need an alias for rshell but I think I'll delay that until I made up my mind which of the MUAs in Emacs I'll use for longer.

• num:nil

  Setting this looks better with headings that already look like numbers or dates. But not all headings do. So I removed it again.

  I'll stop thinking about this until I made up my mind about switching to org-wiki or org-brain and that decission sure still will take some time.

• html-postamble:nil

  … may stay to get rid of the footer.

The current org-brain doesn't run on org-9.1.9, so I added ("org" . "https://orgmode.org/elpa/") to get a newer org-20200316 and org-brain-20200319.949.

Curiousity kills the cat?

I need to get an idea how to use this. Means: How to organise my stuff and when to use different brains for different topics and how to export stuff. Maybe glueing some brain files together via include directives would make a useful way to get a linear text from a bag of notes?

Some hours later…

Ok, still mostly needing to write linear texts about one topic I should explore plain Orgmode more before switching. Playing with Org-brain already may be a good idea but converting my current oldstyle linear texts to Org-brain should definitely wait a while.

Installed org-brain and newer org at home too. Two places to experiment with it. We'll see what happens…

Staying 🕉ptimistic!

Added to ~/.emacs:

(savehist-mode 1)

See https://www.emacswiki.org/emacs/SaveHist.

The newer org (starting with 9.2) kills e.g. the structure template expansion.

The cure: Enabling tempo in org-modules reactivates it.

[X]    tempo:             Fast completion for structures

Playing with org-brain in two locations will expose a synchronisation problem too or will need disjunct topics in those brains. Maybe get git into the game? And what about tramp?

And what about Emacs' startup as org-brain notes/nodes?

Continuation from 2019-nCoV Data (I).

More in 2019-nCoV Data (III).

HITCHHIKERS GUIDE TO THE GALAXY
(ORIGINAL RECORDS STUDIO VERSION NOT BBC RADIO PLAYS)

Once upon a time on a Debian10/AMD64:

$ cat helloworld.c
#include <unistd.h>

int main(int argc,char *argv[])
{
        const char hw[] = "Hello, World!\n";
        write(1, hw, sizeof hw);
        return 0;
}
$ make -B
clang -emit-llvm helloworld.c -c -o helloworld
chmod +x helloworld
./helloworld
Hello, World!
$ █

Thanks to binfmt_misc llvm bytecode(?) is directly executable on Debian10.

The same binary transferred to OpenBSD-6.5:

$ ls -l helloworld                                                         
-rwxr-xr-x  1 yeti  tilde  2856 Mar 24 03:52 helloworld*
$ file helloworld                                                          
helloworld: data
$ lli helloworld   
Hello, World!
$ █

Does OpenBSD have something like Linux's binfmt_misc method for foreign executables?

https://github.com/MockbaTheBorg/RunCPM/issues/76#issuecomment-603305886

\o/

I should dedust a board type without PSRAM for it as long as RunCPM doesn't make use of it. It should be a no brainer because I conserved some snapshots of those suspects and the wiring:

Brain food for for lockdown:

More in The Covid Curve (II).

Continuation of Emacs Org Babel Mystery? (I).

In org-20200316 it's fixed:

| #+BEGIN_SRC sh :results output org
| for i in 1 2 3 ; do
|      echo "* sec $i"
|      echo "  moo $i"
| done
| #+END_SRC
| 
| #+RESULTS:
| #+begin_src org
| ,* sec 1
|   moo 1
| ,* sec 2
|   moo 2
| ,* sec 3
|   moo 3
| #+end_src

Upgraded from weechat-2.5 to weechat-2.7.1 at home.

Should I read all the changelogs and release notes since 2.5 now?

Ok! Took a jet for the fly over.

🕉mmmmmmmmm… o;-)

I test installed devuan3 via its beta netinstall images on an amd64 VM and an i386 VM and then instantly upgraded the result to devuan4.

Just for throwing an eye on the installer's and devuan4's progress.

Win-Win!

Continuation of DATA URI in org/babel (I).

@@html:<img src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAUAAAAFCAYAAACNbyblAAAAHElEQVQI12P4//8/w38GIAXDIBKE0DHxgljNBAAO9TXL0Y4OHwAAAABJRU5ErkJggg==" alt="Red dot" height="32" width="100%"/>@@

Yields:

I had no luck with relative units like 2ex or 20pt. Maybe wrapping it in a div of a given size is the way to pass the outer dimensions by using percentages of them in img.

Continuation from 2019-nCoV Data (II).

Live(?) data for Germany:

Added more "Continuation of …" and "More in …" lines/links.

These should be macros but as long as swithing to org-brain or org-wiki still is on my wishlist, I'll add those links manually. If not switching to org-brain or org-wiki I'll chisel some macros.

Continuation from The Covid Curve (I).

Brain food for for lockdown:

More in The Covid Curve (III).

Continuation from The Covid Curve (II).

Brain food for for lockdown:

Continuation from Nah! I'm not an artist! (III).

Ok. Amber CRTs are a nice nostalgy but I think mainly using a greyscale needs a chance too.

It's all in flux, so here again a snapshot:
20200328-161616-UTC__NAH-IV.png

More in Nah! I'm not an artist! (V).

Continuation from Nah! I'm not an artist! (IV).

Textcolour #eeeeee was a bit too bright. Using #cccccc now.

It's all in flux, so here again a snapshot:
20200328-222222-UTC__NAH-V.png

…