pertsevds

#!/bin/bash

# Script designed to upgrade PNETLab from almost any version to NEW_PNETLAB_VERSION version
# Requirement: Not having PNETLab 6.x installed for being able to upgrade to NEW_PNETLAB_VERSION
# This script avoids to make this upgrade process twice

# CONSTANTS
NEW_PNETLAB_VERSION=5.3.11
GREEN='\033[32m'
NO_COLOR='\033[0m'

pertsevds

Python installation guide

Install asdf and its python plugin, then install Python

asdf lives in https://github.com/asdf-vm/asdf

Follow its installation instructions, which at the moment of writing were:

cd

pertsevds

Set default branch name for new repositories to "main"

git version 2.28+

$ git config --global init.defaultBranch main

git version 2.27 or less

pertsevds

"""
From the man page for ssh:

     -f      Requests ssh to go to background just before command execution.  This is useful if ssh is going to ask 
             for passwords or passphrases, but the user wants it in the background.  This implies -n.  The recommended way 
             to start X11 programs at a remote site is with something like ssh -f host xterm.

             If the ExitOnForwardFailure configuration option is set to “yes”, then a client started with -f will wait 
             for all remote port forwards to be successfully established before placing itself in the background.

pertsevds

Filter "/etc/fail2ban/filter.d/cockpit.conf":
# Fail2Ban filter for Cockpit
#
[Definition]
failregex = pam_unix\(cockpit:auth\): authentication failure;.*rhost=<HOST>
datepattern = ^%%b %%d %%H:%%M:%%S
# DEV Notes:
# Author: Dmitriy Pertsev

Jail "/etc/fail2ban/jail.local":

pertsevds

class atom(object):
    """An implementation of the atom concept, inspired by Erlang.
    
    Modified from here: http://www.me.net.nz/blog/atoms-slash-symbols-in-python/
    
    """
    def __init__(self, a):
        self._a = intern(a)
    
    def __eq__(self, other):

pertsevds

namespace Billiards
{
    public static class BilliardsTask
    {
        /// <summary>
        /// 
        /// </summary>
        /// <param name="directionRadians">Угол направления движения шара</param>
        /// <param name="wallInclinationRadians">Угол</param>
        /// <returns></returns>

pertsevds

using System;

namespace Rectangles
{
    public static class RectanglesTask
    {
        // Пересекаются ли два прямоугольника (пересечение только по границе также считается пересечением)
        public static bool AreIntersected(Rectangle r1, Rectangle r2)
        {
            return !(r1.Left > r2.Right || r2.Left > r1.Right || r1.Bottom < r2.Top || r2.Bottom < r1.Top);

pertsevds

using System;

namespace Pluralize
{
    public static class PluralizeTask
    {
        public static string PluralizeRubles(int count)
        {
            if (count % 10 == 1 && count % 100 != 11)
                return "рубль";