calpamos

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what is pointer :S

As all Real Programmers know, the only useful data structure is the Array.

calpamos / interviewing_my_mother,_a_mainframe_COBOL_programmer.txt

Created April 22, 2026 11:03

Interviewing my mother, a mainframe COBOL programmer

	Interviewing my mother, a mainframe COBOL programmer

	My mother has been working for one of the largest banks in the EU since before I was born and I’ve always been fascinated by her line of work, especially these last years since I’ve become a programmer myself. I’ve been asked to interview her plenty of times, and finally decided to do so.

	Some notes
	The banking programming world is a completely different world than what most of us are used to, and for the next couple of hours after posting this I’ll accept whatever questions you may have for her, but keep in mind that some questions may not be answered due to security concerns. I’ll be posting this to HN & Reddit and will answer questions over there as well.

	I won’t write this as a Q&A, but more like I’m telling you her story.
	UPDATE: I’ve added Q&A of some FAQ to the bottom of the post!

calpamos / diskpart USB_UEFI remove

Last active November 22, 2025 19:29

remove hidden partitions from bootable OS USBs and reset the device

-diskpart
-list disk
-select disk *x*
-clean | list partition // clean is shorthand for these commands
-      | select partition *x*
-      | delete partition *x*
-create partition primary
-format fs=ntfs quick

calpamos / install docker debian no keyrings

Created November 18, 2025 14:08

sudo apt install docker.io docker-compose

calpamos / nukeLibreoffice.sh

Created November 18, 2025 13:24

	sudo apt remove --purge "libreoffice*"
	sudo apt clean
	sudo apt autoremove

calpamos / MU-TH-UR_motd

Last active November 18, 2025 11:48

motd for the discerning user

calpamos / dockerized-drupal.yml

Last active July 9, 2024 11:40

typical dockerized drupal installation in handy docker-compose.yml format to hit & run

calpamos / tar man

Last active November 18, 2025 11:52

Tar cheatsheet

	! files or directories cannot be aded to compressed .tar.gz or .tar.bz2. also cannot be verified

	== CREATE ==
	options:
	-c create
	-v verbose progress
	-z zip with gz
	-j zip with bz2
	-f filename

calpamos / linuxVerboseBoot

Last active November 18, 2025 13:19

linux boot in verbose mode

	sudo nano /etc/default/grub
	GRUB_CMDLINE_LINUX_DEFAULT="quiet splash" for GRUB_CMDLINE_LINUX_DEFAULT=""
	sudo update-grub

calpamos / nvmInstall

Last active November 18, 2025 13:18

install nvm (node version manager)

	1. wget -qO- https://raw.githubusercontent.com/nvm-sh/nvm/v0.39.7/install.sh \| bash

	2. export NVM_DIR="$([ -z "${XDG_CONFIG_HOME-}" ] && printf %s "${HOME}/.nvm" \|\| printf %s "${XDG_CONFIG_HOME}/nvm")"
	[ -s "$NVM_DIR/nvm.sh" ] && \. "$NVM_DIR/nvm.sh" # This loads nvm

	3. nvm install 18.20.0

	----

	show node versions available to install:

calpamos / stealth

Last active November 18, 2025 13:18

looks busy

	hexdump -C /dev/urandom \| GREP_COLOR='1;32' grep --color=auto 'ca fe'
	sudo tcpdump

	od -c /dev/random