krokwen

Fedora34 hibernation

This guide helps to configure the hibernation on a default Fedora34 installation by using a swap file. The Fedora34 installation comes with btrfs as default filesystem. Also, it comes with a zram swap device:

$ swapon
NAME       TYPE      SIZE USED PRIO
/dev/zram0 partition   8G   0B  100

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Symmetic encryption

For symmetic encryption, you can use the following:

To encrypt:

openssl aes-256-cbc -salt -a -e -in plaintext.txt -out encrypted.txt

To decrypt:

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# ubuntu 16.04 used on all nodes

# all your nodes must have static ip in local network
# all your nodes must no have enabled swap partition

# perform this on all nodes:

apt update && apt upgrade -y
apt install -y docker.io
curl -s https://packages.cloud.google.com/apt/doc/apt-key.gpg | apt-key add -

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#!/bin/bash

if [ -z "$1" ]; then
    MB=1024
else
    MB="$1"
fi

if [ -z "$2" ]; then
    browser="google-chrome-beta"

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#!/bin/bash

echo "removeing evaluation key"
rm ~/.IntelliJIdea15/config/eval/idea15.evaluation.key

echo "resetting evalsprt in options.xml"
sed -i '/evlsprt/d' ~/.IntelliJIdea15/config/options/options.xml

echo "resetting evalsprt in prefs.xml"
sed -i '/evlsprt/d' ~/.java/.userPrefs/prefs.xml

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Setup

1. Copy 99-u2f_lock_screen.rules to /etc/udev/rules.d.
2. Copy gnome_lock_all_sessions to /usr/local/bin.
3. Mark gnome_lock_all_sessions as executable: chmod +x /usr/local/bin/gnome_lock_all_sessions
4. Reload udev: udevadm control -R