Martin Kourim mkoura

mkoura / .bashrc

Created June 25, 2025 16:30

Last command's wall time in the Bash prompt?

	# Prompt timer using only Bash internals (no traps or external commands).
	# Displays how long the last command took if it was 5 seconds or more.

	__timer_stop() {
	if [ -z "${__timer_start_sec:-}" ]; then
	# If `__timer_start_sec` was already cleared, clear `__timer_show` as well, so we don't
	# keep showing an outdated timer.
	unset __timer_show
	return
	fi

mkoura / dbsync_snapshots_testing.md

Created August 31, 2021 12:59

db-sync snapshots testing using docker-compose

Setup for testing db-sync snapshots:

cd cardano-db-sync
docker-compose up -d
docker-compose log -f

mkoura / cardano_node_tests_pool_metadata.json

Created September 7, 2020 13:10

cardano-node-tests pool metadata

	{
	"name":"cardano-node-tests",
	"description":"cardano-node-tests E2E tests",
	"ticker":"IOGQA1",
	"homepage":"https://github.com/input-output-hk/cardano-node-tests"
	}

mkoura / max_no_titlebar.sh

Last active September 3, 2016 12:23

no titlebar for maximized windows - map this script to Alt+F10 (and Super+Up in Gnome 3) and use it for window maximization

	#!/bin/sh

	missing_command=0
	hash xprop 2>/dev/null \|\| { echo "${0##*/}: please install xprop" >&2; missing_command=1; }
	hash wmctrl 2>/dev/null \|\| { echo "${0##*/}: please install wmctrl" >&2; missing_command=1; }
	[ "$missing_command" -eq 1 ] && exit 1

	case "$1" in
	res*)
	wmctrl -r :ACTIVE: -b remove,maximized_vert,maximized_horz

mkoura / nonsense.sh

Last active April 2, 2016 09:33

shell interview problems

	# from a file print 10 lines that are directly before the last ten lines without using tail or head
	{ tac \| while read l; do [ "${i:=0}" -lt 20 -a "$i" -ge 10 ] && echo "$l"; i=$(($i + 1)); done \| tac; } < file

	# monitor changes to a file without using tail -f
	while : ; do read line && echo "$line" \|\| sleep 1; done < file

mkoura / vpn-toggle

Last active February 8, 2018 08:21

script for starting/stopping vpn using Network Manager on Linux - can be used via keyboard shortcut