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Bash Cheatsheet

Rename recursively extensions of files

Change OldExtension and NewExtension :

find . -type f -name *.mqh -exec sh -c 'mv "$1" "${1%.OldExtension}.NewExtension"' _ {} \;

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using System.Collections.Generic;
using System.Linq;

// https://www.nuget.org/packages/TestStack.White
using TestStack.White;
using TestStack.White.UIItems;
using TestStack.White.UIItems.Finders;

namespace MTBacktester
{

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LVM Cheatsheet

Table of commands

Logical Volume Management (LVM) | Physical Volume (PV) | Volume Group (VG) | Logical Volume (LV) --- | --- | --- | --- | --- s | NO | YES | YES | YES display | NO | YES | YES | YES create | NO | YES | YES | YES rename | NO | NO | YES | YES

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Generate a self-signed certificate:

openssl req -x509 -sha256 -nodes -days 365 -newkey rsa:2048 -keyout privateKey.key -out certificate.crt

Combine separate crt and key files in pfx:

openssl pkcs12 -export -out certificate.pfx -inkey privateKey.key -in certificate.crt

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# Restore a complete copy of the SSD (sda device)
gunzip -c /media/data/IMAGE_NAME.img.tgz | dd of=/dev/sda

# Create and compress complete backup of sda (the SSD) disk
dd if=/dev/sda conv=sync,noerror bs=1k | gzip -c > "ssd_sda_`date '+%Y%m%d'`.img.gz"

# Remove LVM the snapshot
sudo lvremove /dev/ubuntuvg/rootsnap

# Create LVM snapshot

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.NET Core примери

Създаване на нов уеб проект

$ mkdir MyProject
$ cd MyProject
$ dotnet new mvc --auth Individual

Обновяване на базата

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protected async Task UploadPost(Post post, string endpoint)
        {
            var client = new HttpClient();
            var json = JsonConvert.SerializeObject(post, Formatting.Indented);
            var content = new StringContent(json, Encoding.UTF8, "application/json");
            var url = $"{endpoint}";
            var response = await client.PostAsync(url, content);
            if (!response.IsSuccessStatusCode)
            {
                throw new Exception($"Could not upload post {post.DetailsUri}: {response.ReasonPhrase}");

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public class Pager
    {
        public Pager(int totalItems, int? page, int pageSize = 10)
        {
            // calculate total, start and end pages
            var totalPages = (int)Math.Ceiling((decimal)totalItems / (decimal)pageSize);
            var currentPage = page != null ? (int)page : 1;
            var startPage = currentPage - 5;
            var endPage = currentPage + 4;
            if (startPage <= 0)

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protected string GetRenderedPartial(string viewName, object model = null)
{
    using (var sw = new StringWriter())
    {
        if (ControllerContext != null)
        {
            var viewResult = ViewEngines.Engines.FindPartialView(ControllerContext, viewName);
            var viewContext = new ViewContext(ControllerContext, viewResult.View, new ViewDataDictionary(model), TempData, sw);
            viewResult.View.Render(viewContext, sw);
        }

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#!/bin/bash

echo "Getting $2 levels of $1"

if [ "$2" = "" ]; then
	wget -k -p -nc -r -l 1 $1
	exit
fi

wget -k -p -nc -r -l $2 $1