Latex edition tools

Apps:

[Image to tex] https://latexconvert.com/

[Tex to image] https://www.bruot.org/tex2img/ 

[Solve eq]  https://notegpt.io/photo-math

https://latexeditor.lagrida.com/  #offline  

Install fortinet on Ubuntu 20

Step 1:

wget -O - https://repo.fortinet.com/repo/forticlient/7.2/ubuntu/DEB-GPG-KEY | gpg --dearmor | sudo tee /usr/share/keyrings/repo.fortinet.com.gpg
 

Step 2:

sudo vi /etc/apt/sources.list.d/repo.fortinet.com.list

deb [arch=amd64] https://repo.fortinet.com/repo/6.4/ubuntu/ /bionic multiverse

Step 3:

sudo apt install forticlient 

ICMC VPN

[1] https://atendimentosti.usp.br/otrs/public.pl?Action=PublicFAQExplorer;CategoryID=12

clicar em Configure VPN e na janela de configuração New VPN Connection preencher somente os campos abaixo:

• Connection Name = VPN USP
• Remote Gateway = orion.uspnet.usp.br
• marcar a opção Customize port = 31443
• em Authentication marcar a opção Save login
• em Username digitar o Número USP e clicar em Save
• abrirá a tela de login e no campo Password digitar a senha única e clicar em Connect
•  

 

 

Super Resolution topic

 

References:

[1] github https://iterative-refinement.github.io/

[2] Image Super-Resolution via Iterative Refinement https://arxiv.org/abs/2104.07636

 

 

Movil Tracer

Claro - Perú

[1] https://cuenta.claro.com.pe/DirectorioAbonadosMovil/servlet/directorioAbonados

 

OS Emulation on Ubuntu 20

 

 

sudo apt update && sudo apt install qemu-system-x86

 

# Create a 1GB disk image 

qemu-img create -f qcow2 win95.qcow2 1G

qemu-img create -f qcow2 win95.qcow2 500M #500MB

 # Run

qemu-system-i386 -m 64 -cpu pentium \ -drive file=win95.qcow2,format=qcow2 \ -net nic,model=pcnet -net user \ -soundhw sb16 \ -vga cirrus \ -cdrom /path/to/windows95.iso \ -boot d

#My command

$ qemu-system-i386 -m 64 -cpu pentium -drive file=win95.qcow2,format=qcow2,index=0,media=disk -drive file=./isos/W95_FULL_AR.iso,index=1,media=cdrom -fda ./isos/Windows95a.img -boot c -vga cirrus

 

 

Resources:

https://archive.org/  #Locate isos

 

Local PDF editor

 

 

[1] https://github.com/PDFCraftTool/pdfcraft

Image Flip to use on nemo

 

code in python for flip horizontal images:

from PIL import Image
import os
import sys

def flip_horizontal(input_path):
    # Split filename and extension
    base, ext = os.path.splitext(input_path)
    
    # Create output filename
    output_path = f"{base}_flipped{ext}"
    
    # Open image
    with Image.open(input_path) as img:
        # Flip horizontally
        flipped = img.transpose(Image.FLIP_LEFT_RIGHT)
        
        # Save result
        flipped.save(output_path)
    
    return output_path


# Example usage
if __name__ == "__main__":
    
    if len(sys.argv) < 2:
        print("No input files provided.")
        sys.exit(1)

    for input_image in sys.argv[1:]:
        try:
            output_image = flip_horizontal(input_image)
            print(f"Saved: {output_image}")
        except Exception as e:
            print(f"Error processing {input_image}: {e}")

Mobile development tools

Mobile development is the process of creating software applications for smartphones, tablets, and other mobile devices, primarily focusing on the Android and iOS platforms.

[1] https://flutter.dev/development/mobile  #framework/compiler for make apk

[2] https://dartpad.dev/  #preview code

Alternative pdf books

 

https://welib.org

https://annas-archive.gl

https://z-lib.gd/

3D blender resources

Step by step https://cgian.com/category/blender/

 

https://docs.google.com/presentation/d/1R9SXecAUshzz8HeN6VCLPUHpUJVBhTcMfQr0WIyszx4/edit?usp=sharing

 

Check gmail account for change address

 myaccount.google.com/google-account-email

Firefox - Disable You are sharing entire screen

 

 

about:config

privacy.webrtc.legacyGlobalIndicator

set to false (+add if not exist)  

privacy.webrtc.hideGlobalIndicator

set to true (+add if not exist)  


Jupyter issues

pip install notebook
jupyter notebook


pip install jupyterlab
jupyter lab 


pip install voila
voila

 

Upgrade to nodejs 20/22

curl -fsSL https://deb.nodesource.com/setup_20.x | sudo bash -
sudo apt-get install -y nodejs

 
curl -fsSL https://deb.nodesource.com/setup_22.x | sudo bash -
sudo apt-get install -y nodejs

References:

[1] https://jupyter.org/install

Kazam issues

 Kazam in ubuntu 20 does not show box when you choose area for screen capture

 

sudo add-apt-repository ppa:sylvain-pineau/kazam
sudo apt update
sudo apt install kazam
 

$ kazam --version        #works
kazam 1.5.3 'NX-72307'

 

AI Remove background

 Online tools

[1] work in private space (20c/day) https://ezremove.ai/

[2] Good for small images https://www.remove.bg/upload

[2] Average https://removal.ai/upload/

[3] Average https://snapbg.ai/upload

QGIS

[1] https://qgis.org/resources/installation-guide/#debian--ubuntu

 

Shapefiles

[1] Perú https://www.geogpsperu.com/2014/03/base-de-datos-peru-shapefile-shp-minam.html

 

Terminal code assistant

LM Studio [2]

chmod +x LM-Studio-*.AppImage
./LM-Studio-*.AppImage

 

Ollama on TUI

curl -fsSL https://ollama.com/install.sh | sh

ollama --version

ollama run qwen2.5-coder:1.5b

 

Resources:

 

[1] Opencode https://opencode.ai/download 

[2] LM Studio AppImage https://lmstudio.ai/

 

 

 

 

 

 

 

 

Winamp on Web

 

[1] Demo https://webamp.org/

[2] Source https://github.com/captbaritone/webamp/tree/master 

Gimp Horizontal Flip

 Automate  Horizontal flip by command line single and secure

First:

#!/bin/bash

for f in "$@"; do
    # Extract path, filename, and extension
    DIR="$(dirname "$f")"
    FILE="$(basename "$f")"
    NAME="${FILE%.*}"
    EXT="${FILE##*.}"

    OUTPUT="$DIR/${NAME}_flipped.$EXT"

    gimp -i -b "(let* (
      (image (car (gimp-file-load RUN-NONINTERACTIVE \"$f\" \"$f\")))
      (drawable (car (gimp-image-get-active-layer image)))
    )
    (gimp-item-transform-flip-simple drawable ORIENTATION-HORIZONTAL TRUE 0)
    (gimp-file-save RUN-NONINTERACTIVE image drawable \"$OUTPUT\" \"$OUTPUT\")
    (gimp-quit 0)
    )"
done

Second:

#!/bin/bash

for f in "$@"; do
    DIR="$(dirname "$f")"
    FILE="$(basename "$f")"
    NAME="${FILE%.*}"
    EXT="${FILE##*.}"

    OUTPUT="$DIR/${NAME}_flipped.$EXT"
    TMP="$(mktemp --suffix=".$EXT")"

    # Run GIMP flip
    gimp -i -b "(let* (
      (image (car (gimp-file-load RUN-NONINTERACTIVE \"$f\" \"$f\")))
      (drawable (car (gimp-image-get-active-layer image)))
    )
    (gimp-item-transform-flip-simple drawable ORIENTATION-HORIZONTAL TRUE 0)
    (gimp-file-save RUN-NONINTERACTIVE image drawable \"$TMP\" \"$TMP\")
    (gimp-quit 0)
    )" >/dev/null 2>&1

    # Check result
    if [ $? -eq 0 ] && [ -s "$TMP" ]; then
        mv "$TMP" "$OUTPUT"
        echo "✔ Flipped: $OUTPUT"
    else
        echo "✖ ERROR flipping $f"
        rm -f "$TMP"
    fi
done
 

 

Alternatives to overleaf

 

[1] https://typst.app/pricing/ 

[2] https://app.inscrive.io

[3] Using LLM https://prism.openai.com

References:

[1] https://inscrive.io/articles/overleaf-alternatives

 

 

Alternatives to coding using LLMs

[1] GLM-4.7 https://chat.z.ai/   (too much time/wrong answers)

 

OSE SUNAT

Nubefact

[1] https://www.operador.pe/registro 

[2] https://probar-xml.nubefact.com/

[3] xml examples https://drive.google.com/uc?id=1F5Tk3Wo23bNHcskf7PuPEjyZeU8q3Kwk&export=download&authuser=0

Android on docker

 

A minimal and customizable Docker image running the Android emulator as a service.

https://github.com/HQarroum/docker-android

Chrome disable keyring prompt

 Add --password-store=basic to the end of the command line. 

google-chrome-stable --password-store=basic.

Debug on Firefox

 Disable timers on current web page

in console write the following command

let id = setTimeout(() => {}, 0); while (id--) { clearTimeout(id); clearInterval(id); } 

 

Unminify JavaScript code

https://unminify.com/

Script service on Ubuntu

Install odoo as service  

Step 1: Create a script

 user  ~  vi /usr/local/bin/odoo-start.sh  
#!/bin/bash
# Optional: Port forward example with socat (install via apt install socat)
#socat TCP-LISTEN:8080,fork TCP:localhost:8069 &
# Your Odoo command (example for Odoo 17)

#exec /path/to/odoo-bin -c /path/to/odoo.conf --addons-path=/path/to/addons -d your_db --workers=2

export PYTHONHOME=/usr/local  # Or remove if not required
exec /home/user/Software/odoo-17.0/venv/bin/python3 /home/user/Software/odoo-17.0/odoo-bin  --http-port=8070 -d casa17g4

Step 2: Create service

 user  ~  vi /etc/systemd/system/odoo17.service  
[Unit]
Description=Odoo 17 Service
After=network.target postgresql.service

[Service]
Type=simple
User=user
Group=user
WorkingDirectory=/home/user/Software/odoo-17.0
ExecStart=/usr/local/bin/odoo-start.sh
Restart=always
RestartSec=10

[Install]
WantedBy=multi-user.target

 

Step 3: Run and Debug

sudo systemctl daemon-reload 

sudo systemctl reset-failed odoo17 

sudo systemctl start odoo17

sudo journalctl -u odoo17 -e #  See error

sudo journalctl -u odoo17 -f #  See live 

 

Step 4: Set it for boot

systemctl list-unit-files --type=service --state=enabled | grep odoo

sudo systemctl enable odoo17

systemctl list-unit-files --type=service --state=enabled | grep odoo

 

sudo systemctl disable odoo17  # disable from boot list
 

 

Debug tools

 

Translate tokens (decode)

[1] https://www.jwt.io/

PC with Wifi to HOTSPOT

Resources:

[1] https://mypublicwifi.com/publicwifi/en/index.html

 

Javascript DEBUG functions

 

 

Object.entries(obj)

const obj = { foo: "bar", baz: 42 };
console.log(Object.entries(obj)); // [ ['foo', 'bar'], ['baz', 42] ]

const obj = { foo: "bar", baz: 42 };
const map = new Map(Object.entries(obj));
console.log(map); // Map(2) {"foo" => "bar", "baz" => 42}

// Using for...of loop
const obj = { a: 5, b: 7, c: 9 };
for (const [key, value] of Object.entries(obj)) {
  console.log(`${key} ${value}`); // "a 5", "b 7", "c 9"
}

// Using array methods
Object.entries(obj).forEach(([key, value]) => {
  console.log(`${key} ${value}`); // "a 5", "b 7", "c 9"
});

const object = {
  a: 1,
  b: 2,
  c: 3,
};

console.log(Object.getOwnPropertyNames(object));
// Expected output: Array ["a", "b", "c"]
   

const object1 = {
  a: 'somestring',
  b: 42,
  c: false
};

console.log(Object.values(object1));
// Expected output: ["somestring", 42, false]

 

 

 

References:

[1] https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/entries

[2] https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/getOwnPropertyNames

 

Find free cameras

 

 

https://github.com/2l7b/public-camera-indexing-insights

Interactive Learning

Interactive learn for example docker, kubernetes, linux, python and more

Resources:

[1] https://kodekloud.com/studio/labs

Equations edition tools online

Image to Tex

[1] https://latexconvert.com/

[2] https://www.img2latex.xyz/convert

[3] https://ai-math.io/image-to-latex

[4] https://image2latex.comfyai.app/

[5] https://tools.useoctree.com/tools/math-to-latex

[6] https://www.math2tex.com/ #login required

[7] https://mathpix.com/image-to-latex #login required

[8] Standalone https://github.com/lukas-blecher/LaTeX-OCR

 

Tex to Image

[1] https://latexeditor.lagrida.com/   

[2] https://www.bruot.org/tex2img/   #choose size 1x, 2x, ....

 

Solve equation/equations from image

[1] Image to Latex code (txt) https://notegpt.io/photo-math 

 

Editors

[1] https://quicklatex.com/

 

 

 

 

Tools

[1] extract endpoints/URLs https://github.com/s0md3v/Diggy/tree/master

[2] alternative to nmap https://github.com/s0md3v/Smap

 

3D Virtual camera from 2D image

Qwen Image Edit 2511 — 3D Camera Control 

[1] https://huggingface.co/spaces/multimodalart/qwen-image-multiple-angles-3d-camera

Juicio Fujimori

Testimonios:

[1]  Sesion 29 / Santiago Martin Rivas https://www.youtube.com/watch?v=yKYVZirFdhs

[2]  Sesion 30 / Santiago Martin Rivas https://www.youtube.com/watch?v=rXx4uFF8yaM

[3] Sesion 28 / Carlos Pichilingue

[4] Sesion 57/  Gral Rodolfo Robles Espinoza https://www.youtube.com/watch?v=uq6hwVLTLsw (Mafia Montesinos/Generales/Ejercito alternativo)

Caso Barrios Altos

[4] Sesion 17 / Pedro Suppo Sánchez https://www.youtube.com/watch?v=nVy6ysUzIWE

[5] Sesion 24 / Héctor Gamarra Mamani https://www.youtube.com/watch?v=IyNIHDJD9QE 

Caso Cantuta

[6] Sesion 19/ Ángel Felipe Sauñi Pomaya https://www.youtube.com/watch?v=A2lsUQ7VKTw

[7] Sesion 23/ Pablo Atúncar Cama https://www.youtube.com/watch?v=BBq6IqQrOAY

Hoy en dia

[1]  Hercules Gomez Casanova sale libre https://www.youtube.com/watch?v=w2rhaj_GiBI

Sentencia Final

Sesion 161 https://www.youtube.com/watch?v=zLl9A69dTuU

Referencias:

[1]  Escuela de las Americas, egresados https://derechos.org/soa/pe-mq.html