directentis1

#!/bin/bash
## One-way, immediate, continuous, recursive, directory synchronization
##  to a remote Rclone URL. ( S3, SFTP, FTP, WebDAV, Dropbox, etc. )
## Optional desktop notifications on sync events or errors.
## Useful only for syncing a SMALL number of files (< 8192).
##  (See note in `man inotifywait` under `--recursive` about raising this limit.)
## Think use-case: Synchronize Traefik TLS certificates file (acme.json)
## Think use-case: Synchronize Keepass (.kdbx) database file immediately on save.
## Think use-case: Live edit source code and push to remote server

directentis1

int main() {
    float A = 0, B = 0;
    float i, j;
    int k;
    float z[1760];
    char b[1760];
    printf("\x1b[2J");
    for(;;) {
        memset(b,32,1760);
        memset(z,0,7040);

directentis1

Disk Speed Test (Read/Write): HDD, SSD Performance in Linux

From this article you’ll learn how to measure an input/output performance of a file system on such devices as HDD, SSD, USB Flash Drive etc.

I’ll show how to test the read/write speed of a disk from the Linux command line using dd command.

I’ll also show how to install and use hdparm utility for measuring read speed of a disk on Linux Mint, Ubuntu, Debian, CentOS, RHEL.

Take the average result: To get the accurate read/write speed, you should repeat the below tests several times (usually 3-5) and take the average result.

directentis1

Problem

I have two Github accounts: oanhnn (personal) and superman (for work). I want to use both accounts on same computer (without typing password everytime, when doing git push or pull).

Solution

Use ssh keys and define host aliases in ssh config file (each alias for an account).

How to?

1. Generate ssh key pairs for accounts and add them to GitHub accounts.

directentis1

This is mostly for my own benefit when I invariably format a computer using these adapters and forget how to get wifi working again:

• TP-Link T2U Nano (AC600)¹
• TP-Link T3U Plus (AC1300)¹

Plug device in and ensure it is detected via lsusb:

For the T3U Plus, the ID is 2357:0138.

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Packet Analyzer

For Windows System(s)

• Microsoft Network Monitor: Native supproted by Microsoft, maybe it's more easily and visualize to use than Wireshark for Windows.
• HTTP Debugger: A quite light web debugger for Windows, pretty good compares to Charles or Fiddler, and easier to use.

A part (or whole) of research projects

• NDT (Network Diagnostic Tool) - M-Lab

directentis1

#!/bin/bash

wget "https://updates.insomnia.rest/downloads/ubuntu/latest?&app=com.insomnia.app&source=website" -O /tmp/insomnia.deb \
  && sudo apt install /tmp/insomnia.deb -qqy \
  && rm -f /tmp/insomnia.deb

directentis1

#!/bin/bash

# Install necessary packages
sudo apt install mono-devel tcpdump netsniff-ng netcat socat -yqq

# Install NetworkMiner
wget https://www.netresec.com/?download=NetworkMiner -O /tmp/nm.zip
sudo unzip /tmp/nm.zip -d /home/ubuntu/apps
sudo rm -r /tmp/nm.zip
cd /home/ubuntu/apps/NetworkMiner*

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#!/bin/bash

httpie_latest_release_url=$(curl -s -H "Accept: application/vnd.github+json" https://api.github.com/repos/httpie/desktop/releases/latest | grep 'browser_' | cut -d\" -f4 | grep '.AppImage' | grep -v "arm64") && wget "$httpie_latest_release_url" -O httpie_latest.AppImage && chmod 755 httpie_latest.AppImage \
    && ./httpie_latest.AppImage --appimage-extract \
    && mv squashfs-root /home/ubuntu/apps/httpie \
    && rm -f httpie_latest.AppImage

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#!/usr/bin/bash

# Install conversion tool
sudo apt-get install alien -yqq --no-install-recommends

# Convert npm packages to debian packages
cd nmap_rpms
sudo alien *.rpm

# Installing them with apt/apt-get