Ovanes Markarian ovanes

$ sudo -i
# touch /2GiB.swap
# chattr +C /2GiB.swap
# fallocate -l 2048m /2GiB.swap
# chmod 600 /2GiB.swap
# mkswap /2GiB.swap
# vim /etc/systemd/system/swap.service
# systemctl enable /etc/systemd/system/swap.service
# systemctl start swap

$ sudo -i
# vim /etc/systemd/system/overcommit_memory_1.service
# systemctl enable overcommit_memory_1
# systemctl start overcommit_memory_1
# systemctl status overcommit_memory_1
# cat /proc/sys/vm/overcommit_memory

$ sudo -i
# vim /etc/systemd/system/somaxconn1024.service
# systemctl enable somaxconn1024
# systemctl start somaxconn1024
# systemctl status somaxconn1024
# cat /proc/sys/net/core/somaxconn

$ sudo -i
# vim /etc/systemd/system/disable-transparent-huge-pages.service
# systemctl enable disable-transparent-huge-pages
# systemctl start disable-transparent-huge-pages
# systemctl status disable-transparent-huge-pages
# cat /sys/kernel/mm/transparent_hugepage/enabled
# cat /sys/kernel/mm/transparent_hugepage/defrag

libcaca output from your OSX webcam

ffmpeg -f avfoundation -framerate 30 -s "640x480" -i "0" -c:v rawvideo -pix_fmt rgb24 -f caca -s "640x480" output4.mp4

brew install ffmpeg with options

brew install homebrew-ffmpeg/ffmpeg/ffmpeg --with-libcaca

convert to another format, resize withouth quality loss

ffmpeg -i vitrine.mp4 -vf scale=1024:-1 -q:vscale 0 vitrine.avi

	#!/bin/bash
	#
	# Steps to build GCC 10 on Debian Buster.
	#

	set -e -x

	# Install all dependencies.
	export DEBIAN_FRONTEND=noninteractive
	apt update