https://rushichaudhari.github.io/ Recent content on A collection of random ideas so I don't have to google again Hugo -- gohugo.io en-us Sat, 18 Feb 2023 00:00:00 +0000 https://rushichaudhari.github.io/posts/2023-02-18-building-your-own-personal-assistant-with-chatgpt/ Sat, 18 Feb 2023 00:00:00 +0000 https://rushichaudhari.github.io/posts/2023-02-18-building-your-own-personal-assistant-with-chatgpt/ If you’ve ever used Siri, Alexa, or Google Assistant, you know how powerful and convenient having a personal assistant can be. What if you could build your own personal assistant, tailored to your specific needs? Thanks to the power of OpenAI’s ChatGPT language model and the open-source community, you can! In this post, we’ll explore a GitHub project called “ChatGPT-chan,” which provides a collection of tools to help you build your own personal assistant. https://rushichaudhari.github.io/posts/2022-09-29-hudson-and-thames-mlfinlab-docker/ Thu, 29 Sep 2022 00:00:00 +0000 https://rushichaudhari.github.io/posts/2022-09-29-hudson-and-thames-mlfinlab-docker/ Dockerfile FROM python:3.8-slim-buster RUN apt update && apt install git -y RUN apt install -y build-essential g++ libgl1-mesa-glx libx11-6 cmake protobuf-compiler -y RUN python -m pip install jupyter cvxpy RUN git clone https://github.com/rushic24/mlfinlab.git && cd mlfinlab && python setup.py install RUN pip install pandas==1.5.2 tqdm statsmodels==0.13.5 numpy==1.23.5 EXPOSE 8890 ENTRYPOINT [ "jupyter", "notebook", "--no-browser", "--port=8890", "--ip=0.0.0.0", "--allow-root" ] Makefile # Specify the name of the image IMAGE_NAME = "mlfinlabstuf" # Specify the path to the Dockerfile DOCKERFILE_PATH = ". https://rushichaudhari.github.io/posts/2022-06-19-apache_hadoop_stack_mapreduce_pig_spark_hive/ Sun, 19 Jun 2022 00:00:00 +0000 https://rushichaudhari.github.io/posts/2022-06-19-apache_hadoop_stack_mapreduce_pig_spark_hive/ Apache Hadoop Stack: MapReduce, Pig, Spark, Hive 1. HDFS CLI: load input data list all directories hadoop fs -ls make a new directory to store movie data hadoop fs -mkdir movieData copy data file from local to hdfs hadoop fs -copyFromLocal u.data movieData/u.data 2. MapReduce with Python: movies sorted by rating counts script from mrjob.job import MRJob from mrjob.step import MRStep class RatingsBreakdown(MRJob): def steps(self): return [ MRStep(mapper=self.mapper_get_movie, combiner=self.combiner_count_ratings, reducer=self.reducer_count_ratings), MRStep(reducer=self. https://rushichaudhari.github.io/posts/2022-06-19-collaborative-filtering-on-amazon-products-with-pyspark/ Sun, 19 Jun 2022 00:00:00 +0000 https://rushichaudhari.github.io/posts/2022-06-19-collaborative-filtering-on-amazon-products-with-pyspark/ Goals Recommend top 5 products for an user: RMSE = 1.22 Data set description This is a list of over 34,000 consumer reviews for Amazon products like the Kindle, Fire TV Stick, and more provided by Datafiniti’s Product Database. The dataset includes basic product information, rating, review text, and more for each product. Note that this is a sample of a large dataset. The full dataset is available through Datafiniti. from pyspark. https://rushichaudhari.github.io/posts/2022-06-19-golden-hour-of-publishing-comments/ Sun, 19 Jun 2022 00:00:00 +0000 https://rushichaudhari.github.io/posts/2022-06-19-golden-hour-of-publishing-comments/ Hacker News is a site similar to Reddit where user-submitted stories (known as “posts”) are voted on and commented on. In the tech and startup worlds, Hacker News is immensely popular, and pieces that reach the top of the site’s listings can get hundreds of thousands of views. We’ll compare these two types of posts to determine the following: 1. Do ‘Ask HN’ or ‘Show HN’ posts receive more comments on average? https://rushichaudhari.github.io/posts/2022-06-19-modeling-and-analysis-of-one-finger-qwerty-keyboard-typing-using-fiits-and-zipfs-laws/ Sun, 19 Jun 2022 00:00:00 +0000 https://rushichaudhari.github.io/posts/2022-06-19-modeling-and-analysis-of-one-finger-qwerty-keyboard-typing-using-fiits-and-zipfs-laws/ Goals 1. Modeling the keyboard 2. Fiit’s law parameter estimation: r-squared = 0.709 3. Average typing time of 1000 most frequent words: 0.99 4. Zipf’s law parameter estimation & average typing time of 1000 most frequent words: 0.71 import matplotlib.pyplot as plt import math import numpy numpy.set_printoptions(precision=2) import scipy.stats as stats import statsmodels.api as sm from statsmodels.graphics.regressionplots import abline_plot import seaborn as sns 1. Keyboard modeling # Define keyboard line1 = 'qwertyuiop' line2 = 'asdfghjkl' line3 = 'zxcvbnm' # Define a keyboard as a list of keys. https://rushichaudhari.github.io/posts/2022-05-24-t490-fan-speed-configuration-with-thinkfan/ Tue, 24 May 2022 00:00:00 +0000 https://rushichaudhari.github.io/posts/2022-05-24-t490-fan-speed-configuration-with-thinkfan/ I love Thinkpads. They are robust and durable. And no need to mention about their world class keyboards! It works like a charm, but we need to configure it a bit for silence. Let’s start! 1. Install the necessary package sudo apt install thinkfan 2. Create the configuration file After installing the package we need to create a config file in the following directory: /etc/thinkfan.conf This file requires three main items: https://rushichaudhari.github.io/posts/2022-05-19-wayvnc-arch-linux/ Thu, 19 May 2022 00:00:00 +0000 https://rushichaudhari.github.io/posts/2022-05-19-wayvnc-arch-linux/ Traditionally we have been using Xorg or X11 as the display server on linux. Wayland is a similar display server which aims to be a modern and more optimized. I’m not much used to wayland and this is a guide for using wayvnc, a vnc server for wayland. Any vnc client like tigervnc/ realvncviewer can be used. # Install wayvnc sudo pacman -S wayvnc Create a config with the authentication info and load it using the –config command line option or place it at the default location $HOME/. https://rushichaudhari.github.io/posts/2022-05-06-why-do-we-need-an-opensource-face-detection-apis/ Fri, 06 May 2022 00:00:00 +0000 https://rushichaudhari.github.io/posts/2022-05-06-why-do-we-need-an-opensource-face-detection-apis/ A comparison of different Face Detection APIs in the industry Why do we need an opensource face detection APIs ? Consider we have around 80,000 videos which consists of around a total of 72 million frames. Below is an analysis of how different competitor’s face detection APIs would cost for 72 million frames. Some people have a myth that opensource models don’t work that well compared to these premium services. I’ve also shared a few test screenshots on how even premium service give false positives. https://rushichaudhari.github.io/posts/2022-04-24-convert-browser-requests-to-python/ Sun, 24 Apr 2022 00:00:00 +0000 https://rushichaudhari.github.io/posts/2022-04-24-convert-browser-requests-to-python/ Scraping dynamic content these days is bit difficult as there are wide variety of authentication mechanisms and web server needs correct headers, session, cookies to authenticate the request. If we need to quickly scrape content just for once, implementing authenticationis an overhead. Instead, we can manually login to the website, capture an authenticated request and use it for scraping other pages by changing url/form parameters. curl 'https://www.glassdoor.com/member/home/index.htm' -H 'User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:99. https://rushichaudhari.github.io/posts/2022-04-13-my-pinephone-setup/ Thu, 14 Apr 2022 00:00:00 +0000 https://rushichaudhari.github.io/posts/2022-04-13-my-pinephone-setup/ The Pinephone[1] is my first Linux smartphone. I’ve been waiting for this since 2018. I feel the more android is advancing the more it is getting IOS’ish. Android was not meant to be this way. The reason it became popular early was it being opensource, and developer friendly. That era allowed bootloader unlocking, developing custom and newer kernels, tweaking the UI. Newer android has become too much bloatish and restrictive. For instance if we see miracast, android dropped miracast support for non samsung devices after android 8. https://rushichaudhari.github.io/posts/2022-03-27-colab-equivalent-pytorch-docker-with-gpu/ Sun, 27 Mar 2022 00:00:00 +0000 https://rushichaudhari.github.io/posts/2022-03-27-colab-equivalent-pytorch-docker-with-gpu/ Dockerfile FROM pytorch/pytorch:1.10.0-cuda11.3-cudnn8-devel WORKDIR /root RUN pip install jupyter jupyterlab EXPOSE 8888 COPY . . CMD jupyter notebook --port=8888 --no-browser --ip=0.0.0.0 --allow-root docker-compose.yml version: "3" services: main: build: . volumes: - .:/root ports: - 8888:8888 network_mode: "host" privileged: true deploy: resources: reservations: devices: - driver: nvidia count: 1 capabilities: [gpu] Run docker-compose build docker-compose run --rm main Reason? Colab equivalent Pytorch version 1.10.0 torchtext works torchdata works https://rushichaudhari.github.io/posts/2022-02-05-cool-stuff-to-do-with-ssh/ Sat, 05 Feb 2022 00:00:00 +0000 https://rushichaudhari.github.io/posts/2022-02-05-cool-stuff-to-do-with-ssh/ Watch Netflix from restricted regions Use: Some Netflix shows are only available in India, Let us proxy through some Indian server to watch Netflix # In terminal 1 # 9050 is default port for proxychains socksproxy # something@someIP should be some Indian server ssh something@someIP -D 9050 # In terminal 2 proxychains firefox # Check the IP using https://www.whatismyipaddress.com It should show the ip of the ssh server(India), Now you can watch Indian Netflix :D VNC over SSH tunnel Best alternative if Anydesk/ Teamviewer fails on linux https://rushichaudhari.github.io/posts/2022-01-12-lets-clone-the-voice-of-priyanka-chopra-jonas/ Wed, 12 Jan 2022 00:00:00 +0000 https://rushichaudhari.github.io/posts/2022-01-12-lets-clone-the-voice-of-priyanka-chopra-jonas/ I had decided to get my email reminders using any celebrity’s voice in my previous post Alexa AI for reminding important emails and reminders. Here is a small step towards it :D If you don’t know how Priyanka Chopra sounds like, here is a real sample Sample synthesized voice 1 Sample synthesized voice 2 Sample synthesized voice 3 Real voice of Amitabh Bachchan Sample synthesized voice for Amitabh Bachchan This one is more robotic. https://rushichaudhari.github.io/posts/2021-12-24-real-time-voice-cloning-docker-arch/ Fri, 24 Dec 2021 00:00:00 +0000 https://rushichaudhari.github.io/posts/2021-12-24-real-time-voice-cloning-docker-arch/ I came across this awesome project called Real Time Voice Cloning by Corentin Jemine and I wanted to give it a shot. I’m currently working on a Arch linux machine with GPU, that could easily run the toolbox, but I wanted an easy way to get everything setup. Docker would do the trick as far as getting it setup, and then through forwarding the X Window System via SSH, I could view and control the program locally as it ran remotely. https://rushichaudhari.github.io/posts/2021-12-19-alexa-remind-emails/ Sun, 19 Dec 2021 00:00:00 +0000 https://rushichaudhari.github.io/posts/2021-12-19-alexa-remind-emails/ Motivation :- It was the third time I missed reading my email and picking up shifts for my oncampus job. I did try creating labels and filtering them but that didn’t show any progress in improvement. It’s really stressful when I get the notification that something needs a response from me right away. I had to make sure that I was not missing this next time. It is then when I decided I need to build a system to process and remind me this. https://rushichaudhari.github.io/posts/2021-11-25-pca-vs-autoencoders/ Thu, 25 Nov 2021 00:00:00 +0000 https://rushichaudhari.github.io/posts/2021-11-25-pca-vs-autoencoders/ PCA import numpy as np import sklearn import matplotlib.pyplot as plt from sklearn.decomposition import PCA from sklearn.preprocessing import StandardScaler from sklearn.preprocessing import MinMaxScaler from tensorflow.keras.datasets import fashion_mnist import seaborn as sns import os import gzip import sys # The number of components for pca N_COMP = 100 #@param {type:"integer"} #Load data: (X_train, y_train), (X_test, y_test) = fashion_mnist.load_data() #Design matrix print('Design matrix size: {}'.format(X_train.shape)) Downloading data from https://storage.googleapis.com/tensorflow/tf-keras-datasets/train-labels-idx1-ubyte.gz 32768/29515 [=================================] - 0s 0us/step 40960/29515 [=========================================] - 0s 0us/step Downloading data from https://storage. https://rushichaudhari.github.io/posts/2021-11-06-publishing-hugo-post-to-devto-using-github-ci-and-cd-pipeline/ Sat, 06 Nov 2021 00:00:00 +0000 https://rushichaudhari.github.io/posts/2021-11-06-publishing-hugo-post-to-devto-using-github-ci-and-cd-pipeline/ Why this tool? There are aleady a few github actions available like publish-devto and markdown-to-devto They seem to be failing despite of the valid data in the markdown file. For a large amount of posts there was no option to add a break and the API got overflowed. Steps to set up Creating API Keys in Dev.To Login to dev.to and then go to accounts and create new api key. https://rushichaudhari.github.io/posts/2021-11-01-enable-secure-boot-on-dualboot/ Mon, 01 Nov 2021 00:00:00 +0000 https://rushichaudhari.github.io/posts/2021-11-01-enable-secure-boot-on-dualboot/ Repo to https://wiki.archlinux.org/title/Unified_Extensible_Firmware_Interface/Secure_Boot#Using_a_signed_boot_loader Tips preloader-signed works with systemd boot If you have grub and want to move to systemd-boot refer this https://rushichaudhari.github.io/posts/2021-11-01-ml-pipelines-on-kubeflow-on-localhost/ Mon, 01 Nov 2021 00:00:00 +0000 https://rushichaudhari.github.io/posts/2021-11-01-ml-pipelines-on-kubeflow-on-localhost/ What is Vagrant ? https://www.janbasktraining.com/blog/vagrant-tutorial/ Install Vagrant sudo pacman -S vagrant vagrant plugin install vagrant-vbguest vagrant-share Note: There is also vagrant libvirt plugin for qemu vagrant plugin install vagrant-libvirt but this doesn’t work with kubeflow Install virtualbox sudo pacman -S virtualbox for the linux kernel, choose virtualbox-host-modules-arch for any other kernel (including linux-lts), choose virtualbox-host-dkms Load the vbox drv module sudo modprobe vboxdrv Make sure to put path for Virtualbox where you have a lot of space (50GB+) https://rushichaudhari.github.io/posts/2021-11-01-switch-to-systemd-from-grub/ Mon, 01 Nov 2021 00:00:00 +0000 https://rushichaudhari.github.io/posts/2021-11-01-switch-to-systemd-from-grub/ I have two efi partitions, p1 for windows and p4 for Arch sudo fdisk -l Add the efi entry in /etc/fstab get the UUID from sudo blkid Mount the /efi sudo mount /efi && ls /efi The structure would look something like Install ucode for my amd machine it is sudo pacman -S amd-ucode Reinstall linux kernel sudo pacman -S linux linux-headers mkinitcpio -P Add the following in sudo nano /efi/loader/entries/arch. https://rushichaudhari.github.io/posts/2021-10-28-bookmark-linux-commands-keep/ Thu, 28 Oct 2021 00:00:00 +0000 https://rushichaudhari.github.io/posts/2021-10-28-bookmark-linux-commands-keep/ Why keep ? opensource can export commands from ~/.keep/commands.json My branch now supports running commands with id https://github.com/rushic24/keep Add command: keep new https://rushichaudhari.github.io/posts/2021-07-02-swmo-generate-cheatsheet-from-config/ Fri, 02 Jul 2021 00:00:00 +0000 https://rushichaudhari.github.io/posts/2021-07-02-swmo-generate-cheatsheet-from-config/ I had recently moved to awesomewm from i3wm, some default keybindings were different and It had a really cool command to access cheatsheet which looked like below Then I got a linux phone where swaywm was highly popular in development, I couldn’t find anything good enough to create that cheatsheet like the one found in awesomewm. This script allows me to parse the swaywm config, and create a cheatsheet. It can later be made more pretty through https://carbon. https://rushichaudhari.github.io/posts/2020-06-28-trading-view-scraping/ Tue, 22 Dec 2020 01:21:27 +0000 https://rushichaudhari.github.io/posts/2020-06-28-trading-view-scraping/ How I webscraped 1 minute stock data from tradingview After a long die-hard trying I managed to get 1 minute stock data for free. My previous tries were using selenium and beautifulsoup modules in python. But the data is highly obfuscated so I was not able to find the exact HTML element to scrape. If you manage to do this using selenium please comment below. Probably the data is being loaded up as SVG which is why it isn’t being seen in html inspect element. https://rushichaudhari.github.io/posts/2020-12-20-my-machine-learning-resources/ Sun, 20 Dec 2020 19:22:19 +0000 https://rushichaudhari.github.io/posts/2020-12-20-my-machine-learning-resources/ Machine Learning Concepts. Decision Theory / Risk Estimation Machine Learning #09 Statistical Decision Theory: Regression OLS Assumptions 7 Classical Assumptions of Ordinary Least Squares (OLS) Linear Regression - Statistics By Jim The Gauss-Markov Theorem and BLUE OLS Coefficient Estimates The Gauss-Markov Theorem and BLUE OLS Coefficient Estimates - Statistics By Jim PCA Making sense of principal component analysis, eigenvectors & eigenvalues PCA (Overview) StatQuest: Principal Component Analysis (PCA), Step-by-Step PCA Math Principal Component Analysis (The Math) : Data Science Concepts https://rushichaudhari.github.io/posts/2020-11-28-adding-netlify-cms-to-existing-github-pages-site-within-10-minutes/ Sat, 28 Nov 2020 05:27:29 +0000 https://rushichaudhari.github.io/posts/2020-11-28-adding-netlify-cms-to-existing-github-pages-site-within-10-minutes/ Creating an GitHub OAuth App First, go to GitHub Dev Settings and click New OAuth App. Or just click here: https://github.com/settings/developers Enter whatever you like for Application name and Homepage URL. In Authorization callback URL, enter: https://api.netlify.com/auth/done. Once finished, leave the page in the background. You will need the Client ID and Client Secret on this page later. Creating a Netlify Site … Relax! We’re just creating one, without actually using it. https://rushichaudhari.github.io/posts/2021-11-11-how-to-change-docker-storage-location/ Wed, 11 Nov 2020 00:00:00 +0000 https://rushichaudhari.github.io/posts/2021-11-11-how-to-change-docker-storage-location/ You can easily change the Docker default storage location by creating the daemon.json file and pointing to another location in that file. It happened to me several times that I didn’t have enough space in my root partition to store Docker containers and I had to move the Docker default storage location to another partition. In this post, I wrote down how to do that for my readership and future myself :) https://rushichaudhari.github.io/posts/2020-07-03-lstm-stock-prediction-worth-it/ Fri, 03 Jul 2020 00:00:00 +0000 https://rushichaudhari.github.io/posts/2020-07-03-lstm-stock-prediction-worth-it/ The internet is now flooded with “predicting stock market prices using LSTM”. I went through 9 articles that I found on websites like medium, KDnuggets, etc. And I realized almost 6-7 out of them showed promising results. But none of them showed their real-life use-case; the question is is it beneficial? LSTMS predict T+1th term by previous k terms of time-series, say k=2, So we need to have T and T-1 to predict T+2 so suppose my X for input is Open, High, Low, Close, Volume, and Y would be the next day’s Close https://rushichaudhari.github.io/posts/2020-11-25-pca-vs-autoencoders/ Mon, 01 Jan 0001 00:00:00 +0000 https://rushichaudhari.github.io/posts/2020-11-25-pca-vs-autoencoders/ https://rushichaudhari.github.io/posts/2020-05-14-docker-vnc/ Mon, 01 Jan 0001 00:00:00 +0000 https://rushichaudhari.github.io/posts/2020-05-14-docker-vnc/ This guide assumes you already know what is docker and docker, vncviewer installed on your system The docker image given at https://hub.docker.com/search?q=&type=image is a blank kali image with 0 tools. Let us create a light-weight custom image with the tools needed. The following are the tools which I think are commonly used in kali you can add/remove a few from that list. aircrack-ng crackmapexec crunch curl dirb dirbuster dnsenum dnsrecon dnsutils dos2unix enum4linux exploitdb ftp git gobuster hashcat hping3 hydra impacket-scripts john joomscan masscan metasploit-framework mimikatz nasm ncat netcat-traditional nikto nmap patator php powersploit proxychains python-pip python2 python3 recon-ng responder samba samdump2 smbclient smbmap snmp socat sqlmap sslscan theharvester vim wafw00f weevely wfuzz whois wordlists wpscan Creating Dockerfile https://rushichaudhari.github.io/posts/2021-09-12-nmcli-enterprise-wifi/ Mon, 01 Jan 0001 00:00:00 +0000 https://rushichaudhari.github.io/posts/2021-09-12-nmcli-enterprise-wifi/ # nmcli con add type wifi ifname wlan0 con-name CONNECTION_NAME ssid SSID # nmcli con edit id CONNECTION_NAME nmcli> set ipv4.method auto nmcli> set 802-1x.eap peap nmcli> set 802-1x.phase2-auth mschapv2 nmcli> set 802-1x.identity USERNAME nmcli> set 802-1x.password PASSWORD nmcli> set wifi-sec.key-mgmt wpa-eap nmcli> save nmcli> activate https://rushichaudhari.github.io/posts/2020-07-02-automate-forms-without-selenium/ Mon, 01 Jan 0001 00:00:00 +0000 https://rushichaudhari.github.io/posts/2020-07-02-automate-forms-without-selenium/ In the previous year, I had posted a script to fill google forms using selenium, and containerizing it with docker to run it parallelly. This is an alternative way to do the same using post requests. I had created a google form using the default template shown below. Which had fields like To get started we need to capture the request. I’ve used burp suite tool to capture, there are many alternative tools you can google. https://rushichaudhari.github.io/posts/2020-01-29-compiling-fceux-on-debian-buster/ Mon, 01 Jan 0001 00:00:00 +0000 https://rushichaudhari.github.io/posts/2020-01-29-compiling-fceux-on-debian-buster/ I came across this wonderful video https://www.youtube.com/watch?v=qv6UVOQ0F44. It took me into searching for its code to implement that. And here are a few. https://github.com/Mario-brows/Brows-Super-Mario https://github.com/lopatin96/Lua-SNES-GenNeurNetwork The main problem in them is they use BizHawk Emulator, which I was not successful in compiling for my debian OS, Its stable only for windows machines. Then I found its alternative fceux Which can handle lua scripts too!. The following steps are what I used to compile it successfully. https://rushichaudhari.github.io/posts/2020-04-08-imp-links/ Mon, 01 Jan 0001 00:00:00 +0000 https://rushichaudhari.github.io/posts/2020-04-08-imp-links/ Create openvpn tested on debian/ubuntu on cloud https://github.com/Nyr/openvpn-install https://rushichaudhari.github.io/posts/2021-10-29-mythunderbird-config/ Mon, 01 Jan 0001 00:00:00 +0000 https://rushichaudhari.github.io/posts/2021-10-29-mythunderbird-config/ Why thunderbird? Opensource Can write and export email filters Extensions: Disable sort To quickly find all your filter setting files on Linux, run find ~/.thunderbird/ -name msgFilterRules.dat https://rushichaudhari.github.io/posts/2020-04-08-not-authorized-to-perform-this-operation/ Mon, 01 Jan 0001 00:00:00 +0000 https://rushichaudhari.github.io/posts/2020-04-08-not-authorized-to-perform-this-operation/ Sometimes, when using i3wm I get this error when mounting a partition. But it works for other des like gnome/cinnamon. Make sure polkit is installed. Loosen the polkit permissions in your system to allow your normal user to mount devices by creating a file at /etc/polkit-1/localauthority/50-local.d/org.freedesktop.automount.plka (as root!) with the following content: [Allow Unauthorized mounting/Unmounting] Identity=unix-group:plugdev;cdrom Action=org.freedesktop.udisks2.filesystem-*;org.freedesktop.udisks2.eject* ResultAny=yes ResultInactive=yes ResultActive=yes You can loosen the polkit permissions in your system to allow your normal user to mount devices by creating a file at /etc/polkit-1/localauthority/50-local. https://rushichaudhari.github.io/posts/2020-04-09-rtl-sdr-notes-copy/ Mon, 01 Jan 0001 00:00:00 +0000 https://rushichaudhari.github.io/posts/2020-04-09-rtl-sdr-notes-copy/ We Need RTL SDR Dongle RTL SDR Software Computer SDR works by receiving a analogue radio signal and then using an analog to digital converter to digitalise the signal. The digitalised signal can then be worked in digital processing software. We need GQRX -> osx/ linux git clone https://github.com/csete/gqrx.git cd gqrx mkdir build cd build qmake .. make make install sudo apt-get update sudo apt install git cmake libusb-1.0-0.dev build-essential https://rushichaudhari.github.io/posts/2020-08-19-dockerguiwsl/ Mon, 01 Jan 0001 00:00:00 +0000 https://rushichaudhari.github.io/posts/2020-08-19-dockerguiwsl/ Another day, again my anaconda crashed for no reason. I decided to never use python on windows without linux vm/ docker. I already had my own docker image created here https://hub.docker.com/repository/docker/rushichaudhari/zipline1.3.0/ but I wondered If I could use GUI in it, luckily I managed to do so. So here are the steps :- Pre-requirements: Windows 10 WSL For now, it is necessary to install a third-party App to run the GUI Apps, but Microsoft announced on //build 2020 that they will release soon an improvement that will not require any third-party component to run Linux GUI Apps on Windows Desktop. https://rushichaudhari.github.io/posts/2020-10-29-setting-up-tigervncserver-on-arch-linux-raspberry-pi/ Mon, 01 Jan 0001 00:00:00 +0000 https://rushichaudhari.github.io/posts/2020-10-29-setting-up-tigervncserver-on-arch-linux-raspberry-pi/ Installing tigervnc sudo pacman -Ss tigervnc Editing the environment file ~/.vnc/xstartup functions like .xinitrc and it’s sourced by vncserver when being started. At a minimum, users should start a DE from this file. As an example, to start lxde, you’ll modify the file to: $nano ~/.vnc/xstartup #!/bin/bash exec lxde &>/dev/null The file should be executable: $ chmod +x ~/.vnc/xstartup Adding vncserver options $ nano ~/.vnc/config desktop=sandbox geometry=1920x1080 dpi=96 SecurityTypes=none Starting and stopping vncserver via systemd To control vncserver with systemd, first, create systemd unit file for the user https://rushichaudhari.github.io/posts/2020-04-10-ssd-savespace/ Mon, 01 Jan 0001 00:00:00 +0000 https://rushichaudhari.github.io/posts/2020-04-10-ssd-savespace/ Change cache location of Firefox You can do this by creating a new hidden preference. Type about:config into the location bar and press enter Accept the warning message that appears, you will be taken to a list of preferences Right-click somewhere in the list and select “New > String” For the name of the preference type browser.cache.disk.parent_directory For its value type the path to where you want to store the cache Next locate the preference browser.