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Copy content preserving attributes of /foo to /bar: rsync -aXHA --info=progress2 --stats /foo/ /bar To exclude specific paths from /foo, for example:  --exclude=/.snapshots --exclude=/.swap To use .rsync-filter files as exclude info use -F flag. For example...

Set up new encrypted volume Format cryptsetup luksFormat --type luks2 /dev/<dev> cryptsetup luksDump /dev/<dev> Note the UUID. Open cryptsetup luksOpen --allow-discards /dev/<dev> <name> Creates new device /dev/mapper/<name>. Format mkfs.btrfs /dev/ma...

http://www.cpm.z80.de/binary.html http://www.retroarchive.org/cpm/index.html http://www.floppysoftware.es/cpm_projects.html?path=cpm_projects

cpmtools Disk format definitions: /usr/share/diskdefs. List files in image: cpmls -f z80mbc2-d0 rc2014_cf.img Copy all files from image: cpmcp -f z80mbc2-d0 rc2014_cf.img '0:*.*' /tmp/1 Additional entries for /usr/share/diskdefs: ## Extras for Z80-MBC2 #...

Documentation: Z80ASM.PDF Compiling .Z80 assembly file to .COM file: d:z80asm <file>/f  

Documentation: ZASMB Documentation.pdf Compiles .Z80 to .COM file: D:zasm <file>

Repository: https://github.com/janaite/forth83-80 Manual: F83-20.MAN (from http://www.retroarchive.org/cpm/cdrom/CPM/FORTH-83/) Copy f83.com to your system and run it. Words: BYE - exit to CP/M WORDS - list words SEE word - see word definition VIE...

Since I no longer have public IPv4 assigned to my modem/router and no way to enable modem/bridge mode I use VPS to terminate incoming traffic for HTTP and VPN-in. Type: VPS vps2020-starter-1-2-20 (1 vcore, 2 GiB RAM, 20 GB HDD) Location: London os-uk2 O...

Kirchhoff's series: I const, V divider parallel : I divider, V const Ohm's V = IR I = V/R R = V/I Power P = IV Reactance / Inductance Xc = 1/(2πfC) Xl = 2πfL Z = sqrt(R**2 + X**2)

ESP32: esp32_technical_reference_manual_en_0.pdf Configuration Configuration can be reset using UART (e to reset configuration). In my case the display would turn off after initial loading screen. This can be fixed by configuring "OLED Bright" configurati...

TinyGS intro: https://youtu.be/6Q5DRqxdOaY?t=629 Board: Lilygo LORA32 Build instructions: Build-Your-Own-Satellite-Ground-Station-TinyGS-compressed.pdf GroundStation Name: HxD https://tinygs.com/station/HxD@7641588744 http://192.168.80.155/ Zab...

Specs Dual core Arm Cortex M0+ 133 MHz 264kB multi-bank high performance SRAM 2MiB external flash Datasheet: pico-datasheet.pdf Pinout VBUS 40 - micro-USB input voltage, connected to micro-USB port pin 1. This is nominally 5V (or 0V if the USB is n...

This is a remix of https://www.thingiverse.com/thing:5182572/files but with better fitting inserts (Part 2): FreeCAD project: Paper Towel Holder - Custom.FCStd STL: Paper Towel Holder - Custom-Body.stl

Pinout 5V - comes form USB-C VBUS and/or output of the regulator (VIN); MCU has operating voltage of 1.8 - 5.5V VIN - goes to the regulator and can be maximum 15 V; minimum 5 + ~1.1 (dropout) for regulator to regulate; MCU should run with 2.9 V 3V3 - ou...

e A register level TMS0805 CPU emulator on an Arduino Nano runs the original 320 instruction calculator program. A custom PCB houses it all. Resources Reversing Sinclair's amazing 1974 calculator hack Now Texas Instruments offered him an inexpensiv...

FreeCAD: Skrew box wall mount.FCStd STL: Skrew box wall mount-Body.stl

/etc/udev/rules.d/bj68.rules SUBSYSTEM!="usb|usb_device", ACTION!="add", GOTO="tablet_bj68_rules_end" # MediaTek BJ68 ATTRS{idVendor}=="0e8d", ATTRS{idProduct}=="201d", SYMLINK+="tablet-%k", MODE="660", GROUP="adbusers" LABEL="tablet_bj68_rules_end" ...

gpg --expert --full-gen-key # press 9 (ECC and ECC) # press 1 (Cureve 25519) # press 0 (not expire) # export gpg --list-public-keys gpg --export --armour <key_id> > pubkey.pem # import gpg --import pubkey.pem gpg --edit-key <key_id> trust # en...

Resources Manual: optiplex-7050-desktop-micro-owners-manual-en-us.pdf Hardware Model: Dell OptiPlex 7050 micro CPU: Intel Core i7-6700T (QC/8MB/8T/2.8GHz/35W) RAM: 16GB Disk: 2 TB SSD CPU Installed: Intel Core i7-6700T (QC/8MB/8T/2.8GHz/35W) ...