Ondrej Vaško Lirt

Lirt / lines-from-pattern.sh

Last active May 4, 2018 11:00

Sed examples

	# Print lines from line which match pattern to end of file
	pattern=""
	sed -n "/$pattern/,$ p" file.txt

	# Example
	pattern="mnop"
	str="$(echo -e "abcd\nefgh\nijkl\nmnop\nqrst\nuvw\nxyz" \| sed -n "/$pattern/,$ p")"
	echo $str

	# Remove lines before line LINE including LINE

Lirt / bash-options.sh

Last active March 22, 2017 15:19

Bash specific function and syntax cheatsheet

	# Exit on error
	set -e
	# Exit if variable was not set
	set -u
	# Exit when command in pipe fails
	set -o pipefail
	# Print every command executed with variable interpolation
	set -x

Lirt / interfaces.sh

Last active August 8, 2023 07:15

Useful things with linux networking

	# Debian default gateway /etc/network/interfaces
	up route add default gw 62.210.123.1

	# Force interface eth0 to 10 Gbit speed
	ethtool -s <device> speed 10000 duplex full autoneg off
	# For the setting to be persistent across reboots
	# edit "/etc/udev/rules.d/71-ethtool.rules"ff and
	# add "SUBSYSTEM=="net", ACTION=="add", NAME=="<device>", RUN+="/sbin/ethtool <device> -s speed 100 duplex full autoneg off"

Lirt / images.sh

Last active March 22, 2025 09:02 — forked from smoser/gist:4756561

boot a cloud image in kvm

	## Install a necessary packages
	sudo apt-get install kvm cloud-utils genisoimage
	modprobe kvm && modprobe kvm-intel

	## URL to most recent cloud image of 16.04
	img_url="http://cloud-images.ubuntu.com/server/releases/16.04/release"
	img_url="${img_url}/ubuntu-16.04-server-cloudimg-amd64-disk1.img"
	## download the image
	wget $img_url -O disk.img.dist

Lirt / digital-ocean.sh

Last active August 30, 2018 19:15

Phoronix test suite, Google PerfKit

	# Install doctl
	# https://github.com/digitalocean/doctl
	cd /tmp && wget -qO - https://github.com/digitalocean/doctl/releases/download/v1.6.0/doctl-1.6.0-linux-amd64.tar.gz \| tar -xzvf -
	sudo mv /tmp/doctl /usr/local/bin/

	# Install elasticsearch package for pushing data to ES
	sudo pip install elasticsearch
	ES_URI=''

	# Setup credentials and access to DO

Lirt / vbox-mod-sign.sh

Last active February 3, 2019 10:54

Sign VirtualBox kernel modules to run with SecureBoot

	#!/usr/bin/env bash
	#
	# Script for guide:
	# https://gorka.eguileor.com/vbox-vmware-in-secureboot-linux-2016-update/
	#
	# Verification:
	# dmesg \| grep "EFI:.cert.${cert_name}"
	#
	set -eu
	set -o pipefail

Lirt / postfwd-geoip-antispam-ip-list

Created January 6, 2019 20:38

	+-----------------+------------+-------------+
	\| ip_address \| state_code \| login_count \|
	+-----------------+------------+-------------+
	\| 41.63.176.___ \| AO \| 8 \|
	\| 200.80.227.___ \| AR \| 41 \|
	\| 120.146.134.___ \| AU \| 18 \|
	\| 79.132.239.___ \| BE \| 15 \|
	\| 184.149.27.___ \| CA \| 1 \|
	\| 24.37.20.___ \| CA \| 13 \|
	\| 70.28.77.___ \| CA \| 21 \|

Lirt / ip-list.md

Created January 6, 2019 20:41

Lirt / geoip-distribution.md

Created January 6, 2019 20:52

Lirt / geoip-distribution

Created January 6, 2019 20:54

	+-----------------+------------+-------------+
	\| ip_address \| state_code \| login_count \|
	+-----------------+------------+-------------+
	\| 41.63.176.___ \| AO \| 8 \|
	\| 200.80.227.___ \| AR \| 41 \|
	\| 120.146.134.___ \| AU \| 18 \|
	\| 79.132.239.___ \| BE \| 15 \|
	\| 184.149.27.___ \| CA \| 1 \|
	\| 24.37.20.___ \| CA \| 13 \|
	\| 70.28.77.___ \| CA \| 21 \|