shvchk

Start application minimized

Usage

python3 /path/to/start_minimized.py <command_to_run_application>

Prerequisites

Install wmctrl and xdotool: sudo apt-get install wmctrl xdotool

Source

Jacob Vlijm answer on AskUbuntu

shvchk

Set up SSH key based authentication

SSH keys come in pairs: a public and a private key. It might be easier to think of them as a lock (public part) and key (private part). You add public key (lock) to the computer you want to connect to, and then you can connect from elswhere and unlock it with your private key. So public key is meant to be handed out freely, while private key should be kept secret and safely guarded.

So let's create an SSH key (all commands below are executed on your local computer, from which you will be connecting to remote example.com):

1. Make sure local user has .ssh directory: mkdir -p ~/.ssh

2. Generate SSH keys for passwordless authentication:

shvchk

Были рассмотрены практически все имеющиеся 5" смартфоны с 3GB RAM до 130$, и из них отобраны наиболее конкурентоспособные исходя из характеристик и цены, их и будем сравнивать.

Участники

1. Vernee Thor
2. Vernee Thor E
3. Meizu M5
4. Meizu U10
5. Xiaomi Redmi 4X

shvchk

Keybase proof

I hereby claim:

• I am shvchk on github.
• I am shevchuk (https://keybase.io/shevchuk) on keybase.
• I have a public key whose fingerprint is 6E28 CD88 F9A6 CB2B F5FE D967 D970 4253 BBB6 ECFC

To claim this, I am signing this object:

shvchk

Install Signal Desktop as a standalone app, without Chrome dependency *

UPD 2: Official standalone Signal Desktop is released!
Install official Signal Desktop, old version and this guide using it should now be considered deprecated.

---

UPD 1: There is now an easier way with automatic Signal Desktop installer, which also keeps Signal updated.

---

shvchk

#! /usr/bin/env sh

DEFAULT_DL_LIMIT="32" # KB/s
APT_LAST_UPDATE_FILE="$HOME/.apt-last-update"
NICE="nice -n 19 ionice -c 3 trickle -s -d ${1:-$DEFAULT_DL_LIMIT}"

sudo $NICE apt update
touch $APT_LAST_UPDATE_FILE

shvchk

#! /usr/bin/env sh

DEFAULT_DL_LIMIT="32" # KB/s
APT_LAST_UPDATE_FILE="$HOME/.apt-last-update"
NICE="nice -n 19 ionice -c 3 trickle -s -d ${1:-$DEFAULT_DL_LIMIT}"

if [ -e $APT_LAST_UPDATE_FILE ] && [ $(( $(date +%s) - $(date +%s -r $APT_LAST_UPDATE_FILE) )) -le 3600 ]
then
    echo "APT package lists updated less than an hour ago, skipping"
else

shvchk

#! /usr/bin/env sh

DEFAULT_DL_LIMIT="32" # KB/s
APT_LAST_UPDATE_FILE="$HOME/.apt-last-update"
NICE="nice -n 19 ionice -c 3 trickle -s -d ${1:-$DEFAULT_DL_LIMIT}"

if [ -e $APT_LAST_UPDATE_FILE ] && [ $(( $(date +%s) - $(date +%s -r $APT_LAST_UPDATE_FILE) )) -le 3600 ]
then
    echo "APT package lists updated less than an hour ago, skipping"
else

shvchk

Create persistent SSH proxy with autossh

Create persistent local SSH server forwarding with autossh

shvchk

#! /usr/bin/env sh

USERNAME="support"
AVATAR_URL="https://shevchuk.co/cog.png"
AVATAR_FILE="/home/$USERNAME/.face"

sudo adduser --uid 555 --gecos "" $USERNAME
sudo adduser $USERNAME sudo
sudo wget -qO $AVATAR_FILE $AVATAR_URL
sudo chown $USERNAME:$USERNAME $AVATAR_FILE