arvati

sudo apt install build-essential libncurses-dev linux-headers-amd64 linux-source
cd /usr/src/
tar xf linux-source-4.19.tar.xz 
cd linux-source-4.19
cp ../linux-headers-4.19.0-9-amd64/Module.symvers .
cp /boot/config-4.19.0-9-amd64 ./.config # copy from boot folder
make oldconfig # it copies .config to ./
nano .config # enable module, ex: CONFIG_FT1000=m
make menuconfig # to confirm

arvati

Barcode Contents

What is the format of what the 2D barcode itself (QR Code, Data Matrix, and so on) encodes?

2D barcodes encode text, generally, but that text can represent many things.
Commonly, 2D barcodes encode text that represents a URL, like https://github.com/arvati. This is a special string of text since it is recognizable as a URL by readers, and therefore can be acted upon: the reader can open the URL in a browser.

2D barcodes can encode many types of actionable text. Text representing contact information, when recognized, could trigger a prompt to add the contact to an address book. But this only works when readers understand that text encodes contact information. For this, we need standards too.

There are some standards -- de facto and otherwise -- already in use. This gist attempts to catalog some possible standards for encoding various types of information, as seen at https://github.com/zxing/zxing/wiki/Barcode-Contents

arvati

#GNU Screen Cheat Sheet

##Basics

• ctrl a c -> cre­ate new win­dow
• ctrl a A -> set win­dow name
• ctrl a w -> show all win­dow
• ctrl a 1|2|3|… -> switch to win­dow n
• ctrl a " -> choose win­dow
• ctrl a ctrl a -> switch between win­dow
• ctrl a d -> detach win­dow

arvati

Build Slim Openwrt Rootfs for docker

TODO: choose another docker container

sudo docker container run -it openwrtorg/sdk:x86-64-master
sed -i '/src-git/s/^#//' /home/build/openwrt/feeds.conf.default
/home/build/openwrt/scripts/feeds update -a
/home/build/openwrt/scripts/feeds install -a
wget https://downloads.openwrt.org/snapshots/targets/x86/64/config.buildinfo -O .config
make defconfig 

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SMBNetFS

Install and setup

sudo apt-get install smbnetfs
mkdir ~/.smb
cp /etc/smbnetfs/smbnetfs.conf ~/.smb
cp /etc/samba/smb.conf ~/.smb

arvati

Install docker into debian Buster

link: https://linuxize.com/post/how-to-install-and-use-docker-on-debian-10/

Installing

sudo apt install apt-transport-https ca-certificates curl software-properties-common gnupg2
curl -fsSL https://download.docker.com/linux/debian/gpg | sudo apt-key add -
sudo add-apt-repository "deb [arch=amd64] https://download.docker.com/linux/debian $(lsb_release -cs) stable"
sudo apt update
sudo apt install docker-ce

arvati

Create Root CA (Done once)

Create Root Key

Attention: this is the key used to sign the certificate requests, anyone holding this can sign certificates on your behalf. So keep it in a safe place!

openssl genrsa -des3 -out rootCA.key 4096

arvati

Alpine chroot btfrs grub2 install

Mount root subvolume

mount -t btrfs -o subvolid=5,noatime,nodiratime,noacl,nossd 'UUID=68706ead-a626-4209-b3d0-1187b835f803' /mnt/btrfs
mount -o remount,exec /mnt/btrfs

List BTRFS subvolumes

btrfs subvolume list -t --sort=path /mnt/btrfs

arvati

Create and Manage Btrfs Snapshots

Mount root subvolume

mount -t btrfs -o subvolid=5,noatime,nodiratime,noacl,nossd 'UUID=68706ead-a626-4209-b3d0-1187b835f803' /mnt/btrfs

List BTRFS subvolumes

btrfs subvolume list -t --sort=path /mnt/btrfs
ID      gen     top level       path
--      ---     ---------       ----

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Copy subversion repos locally

Create local server

svnadmin --version
sudo svnadmin create /srv/svn/edifast
sudo chmod -R g+rws /srv/svn/
cd /srv/svn/
sudo find -type d -exec chmod g+s {} + 

Make then use the same UUID. First look info at remote server