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Vladyslav Krylasov sprytnyk

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sprytnyk / keybase.md
Created June 3, 2024 09:29

Keybase proof

I hereby claim:

  • I am sprytnyk on github.
  • I am sprytnyk (https://keybase.io/sprytnyk) on keybase.
  • I have a public key ASBPJMnl5Y0bGmT0N8mOmWSbNW7sSLMk68YQSjFFGlRBZwo

To claim this, I am signing this object:

@sprytnyk
sprytnyk / do-bootstrap.sh
Last active January 13, 2025 16:47
A simple bootstrap script for Ubuntuon DigitalOcean that setup firewall, creates a sudo user with a pass, installs libs, configure a locale and ssh.
#!/bin/bash
# A bootstrap script for Ubuntu on DigitalOcean
set -eu
trap 'echo "Error on line $LINENO"; exit 1' ERR
echo "Starting bootstrap setup..."
# Update system and install required packages
echo "Updating system and installing required packages..."
@sprytnyk
sprytnyk / vpn-boostrap.sh
Last active June 15, 2025 16:28
#!/bin/bash
# VPN bootstrap script.
# 1st step
# Abort script at first error, when a command exits with non-zero status
# (except in until or while loops, if-tests, list constructs)
# https://www.tldp.org/LDP/abs/html/options.html
set -eu
# update repositories and install libraries
@sprytnyk
sprytnyk / standalone.py
Last active December 7, 2021 11:28
An example of Django standalone script
#!/usr/bin/env python3
import os
import pathlib
import sys
import django
# Set a project root to a const, this file should be placed in a project root
# as well
PROJECT_ROOT = pathlib.Path(__file__).resolve().parent
@sprytnyk
sprytnyk / time.py
Created July 15, 2020 13:21
A dummy function to measure time consumed by a function, method, etc.
import resource
from functools import wraps
from time import time
def time_it(func):
@wraps(func)
def wrapper(*args, **kwargs):
start = time()
f = func(*args, **kwargs)
@sprytnyk
sprytnyk / mem.py
Last active March 18, 2021 16:25
A dummy decorator function to measure memory usage of a Python function, method, etc.
import resource
from functools import wraps
def mem_it(func):
@wraps(func)
def wrapper(*args, **kwargs):
pre = resource.getrusage(resource.RUSAGE_SELF).ru_maxrss / 1024
print(f'Pre-memory usage: {pre} (mb)')
f = func(*args, **kwargs)
@sprytnyk
sprytnyk / cap_vs_len.go
Last active June 25, 2020 16:14
How `cap` built-in differs from `len` one in Golang.
package main
import "fmt"
func main() {
/*
array address is 0xc000016420.
array values are [5]int{1, 2, 3, 4, 5}.
array type is [5]int.
array length is 5.
@sprytnyk
sprytnyk / main.go
Last active June 24, 2020 22:57
How pointers works in Golang.
package main
import "fmt"
func main() {
/*
i initial value is 0
j initial value is 0
i initial address is 0xc0000b4010
j initial address is 0xc0000b4018
@sprytnyk
sprytnyk / pylint-errors.py
Created May 29, 2020 22:26
import re
import subprocess
from collections import defaultdict
from dataclasses import dataclass, field
from pprint import pprint
TEMPLATE = """## {code} ({text_code})
### :x: Problematic code:
@sprytnyk
sprytnyk / install-srm.sh
Last active January 6, 2025 18:16
A dummy script that installs srm util.
#!/usr/bin/env bash
# A dummy script incorporated to a gist for the sake of simplicity to install srm.
# Credit: http://techies-world.com/install-srm-secure-remove-command/
cd "$(mktemp -d)" || exit
echo "Starting to download srm file..."
sudo apt install build-essential
wget http://downloads.sourceforge.net/project/srm/1.2.15/srm-1.2.15.tar.gz
tar -zxvf srm-1.2.15.tar.gz
cd srm-1.2.15 || exit