Bartosz Meglicki bmegli

Scenario

# B has 2 network interaces, A reachable through one, C reachable through other
# We want A to C communiation (over B)
A----B----C

Ad-hoc solution

Checking Status

# check service status
sudo systemctl status unattended-upgrades

# check service log
journalctl --unit unattended-upgrades

cat record.sh

set -x
ffmpeg -video_size 1920x1080 -framerate 30 -f x11grab -draw_mouse 0 -i :1 -c:v libx264 -crf 0 -preset ultrafast ~/Videos/$1

# e.g for gcc-6 and g++-6
export CC=/usr/bin/gcc-6
export CXX=/usr/bin/g++-6
cmake ..
make -j8

Motivation

When:

using newer compilers from Ubuntu test ppa (e.g. ppa:ubuntu-toolchain-r/test)
ppa-purge later to revert the system to clean state

it is possible to get to dissastrous state where libgcc_s.so.1 is misssing.

In such state apt and other applications may not work and system will not boot.

git tag -d <tagname>                  # delete the old tag locally
git push origin :refs/tags/<tagname>  # delete the old tag remotely
git tag <tagname> <commit>          # make a new tag locally
git push origin <tagname>             # push the new local tag to the remote

Source

Looks like some "time bomb" in Firefox

To workaround:

Open about:config
Search for https3
Disable network.http.http3.enabled
Restart Firefox

Now re-enable network.http.http3.enabled and restart. It should be still working.

Unninstalling Packages

# vcpkg_target_triplet is envirnoment variable with triplet name
vcpkg remove package:%vcpkg_target_triplet% --recurse

Installing Packages

Scripts

cat performance.sh 
#! /bin/bash
cat /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor

for file in /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor; do echo "performance" > $file; done

cat /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor

	import os
	from colorama import Fore, Style

	WANTED_WIDTH = 100
	DISPLAY_WIDTH = min(WANTED_WIDTH, os.get_terminal_size().columns - 2)
	print("┏" + "".center(DISPLAY_WIDTH, "━") + "┓")
	print(f"┃{Fore.RED}" + "CMakeLists to C++17 Utils".center(DISPLAY_WIDTH, " ") + f"{Style.RESET_ALL}┃")
	print(f"┃{Style.BRIGHT+ Fore.BLACK}" + "Meltwin - 2023".center(DISPLAY_WIDTH, " ") + f"{Style.RESET_ALL}┃")
	print("┗" + "".center(DISPLAY_WIDTH, "━") + "┛")
	print()