matinrco

Enable bbr in ubuntu 22.04/20.04

Requirements:

• Linux kernel version must be greater than 4.19

  to check kernel version, run uname -r. sample output:

  5.4.0-132-generic
  

• Have the CONFIG_TCP_CONG_BBR and CONFIG_NET_SCH_FQ options compiled and added to the kernel.

matinrco

Setup proxy for Discord

By default, we assume that you have an HTTP proxy that is running on your system on port 8080.

• Setup proxy for Update.exe: Discord icon on your desktop or start menu does not directly start the main Discord app. Instead, it runs the Update.exe program to perform the upgrade detection. If there is an update, Discord.exe will be started after downloading the update, so we must first setup proxy for Update.exe. Create Update.exe.config beside Update.exe in Discord installation location with following content:

matinrco

Windows

Add this to your ssh config file ( which is located in %USERPROFILE%\.ssh\config ) or create one if it's missing:

Http proxy & repo access via ssh:

Host *
    ProxyCommand "C:/Program Files/Git/mingw64/bin/connect.exe" -H {proxyserver}:{port} %h %p

or (for specific host name)

Host gitlab.com

matinrco

Run OpenModelica GUI with Docker on Mac OS host

1. First you need docker , brew , XQuartz and socat on your host.

   • docker : Install docker desktop from here
   • brew : Follow installation instruction from here
   • XQuartz : Install by : brew cask install xquartz
   • socat : Install by : brew install socat

2. Now run this in new terminal :

socat TCP-LISTEN:6000,reuseaddr,fork UNIX-CLIENT:"$DISPLAY"

matinrco

// Insert some data
db.product_categories.insertMany([
    {
        _id: 1,
        name: 'Products',
        parent_id: null
    },
    {
        _id: 2,
        name: 'Digital & Electronics',

matinrco

How to enable hidden GRUB menu?

On new Fedora 29 Workstation installs this will be enabled by default. If your system has been upgraded to F29 from an older release, you can enable it by running these commands:

On a system using UEFI booting ("ls /sys/firmware/efi/efivars" returns a bunch of files):

sudo grub2-editenv - set menu_auto_hide=1
sudo grub2-mkconfig -o /etc/grub2-efi.cfg

On a system using legacy BIOS boot:

matinrco

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE fontconfig SYSTEM "fonts.dtd">
<fontconfig>

    <!-- Add generic family. -->
    <match target="pattern">
        <test qual="any" name="family"><string>emoji</string></test>
        <edit name="family" mode="assign" binding="same"><string>Noto Color Emoji</string></edit>
    </match>

matinrco

var toBase64=function (file , callBack) {
    file=file.files[0];
    var reader = new FileReader();
    reader.readAsDataURL(file);
    reader.onload = function () {
        callBack(file,reader.result);
    };
    reader.onerror = function (error) {
        console.log('Error: ', error);
    };

matinrco

#!/bin/zsh

####################################################
## Notice : use for development environment only. ##
####################################################


#Update all images
docker images --format "{{.Repository}}:{{.Tag}}" | grep -v "<none>" | xargs -L1 docker pull

matinrco

This is fedora persian font fix configuration.

---

For unknown reasons google droid sans font takes higher precedence in fontconfig instead of default dejavu sans which has better font face for persian and it's default sans-serif font in fedora.
This happens mostly in kde desktop because of using noto fonts as a default option in desktop environment which has no support for persian glyphs then droid font used as fallback font.
You cannot delete droid fonts because of many packages are depend on it.
To fix this we are going to black list droid arabic kufi to force using dejavu sans.