mvneves

How to install Bluetooth 5.0 Headset with Realtek RTL8761B Bluetooth 5.0 dongle on Linux

Download and install RLT8761B chipset firmware:

wget https://raw.githubusercontent.com/Realtek-OpenSource/android_hardware_realtek/rtk1395/bt/rtkbt/Firmware/BT/rtl8761b_config
wget https://raw.githubusercontent.com/Realtek-OpenSource/android_hardware_realtek/rtk1395/bt/rtkbt/Firmware/BT/rtl8761b_fw

sudo cp rtl8761b_config /usr/lib/firmware/rtl_bt/rtl8761b_config.bin

mvneves

Reloading dnsmasq hosts

To reload after changes in /etc/hosts, send SIGHUP to dnsmasq like this:

sudo pkill -SIGHUP dnsmasq

mvneves

{
    "Version": "2012-10-17",
    "Statement": [
        {
            "Sid": "limitedRegion",
            "Action": "ec2:*",
            "Resource": "*",
            "Effect": "Allow",
            "Condition": {
                "StringEquals": {

mvneves

How to split a git repository into two different ones

These are the steps to extract a directory from a git repository (with all its history commit), create a new repository from this directory, and optionally remove it from the original one.

To the ones that are here to copy-paste code, this is an example which removes the MODULE directory from REPO repository.

Step 1: Extract the directory from the git repository

Clone the original repository:

mvneves

SSH authentication agent does not automatically start when using it from a remote server. This results in the following error message:

$ git pull
Permission denied (publickey).
fatal: The remote end hung up unexpectedly
$ ssh-add ~/my-ssh-key.pem
Could not open a connection to your authentication agent.

To fix it requires manually starting ssh-agent:

mvneves

Using SSH without password

Generate a pair of keys in the local machine:

ssh-keygen -t rsa

Add public key to server's .ssh/authorized_keys file:

cat ~/.ssh/id_rsa.pub | ssh user@server 'cat >> .ssh/authorized_keys'

mvneves

Download an entire Amazon EC2 instance to local host using rsync

rsync -av --progress -e 'ssh -i /path/to/user.pem' \
--rsync-path='sudo rsync' --exclude='/dev/' --exclude='/proc/' --exclude='/sys/' \
user@ec2-xx-xx-xx-xx.us-west-2.compute.amazonaws.com:/* /local/path/

Actually, this doesn't download the instance itself, but its file system contents.