Assaf Morami assafmo

assafmo / Golang_Flame_Graphs.md

Last active April 18, 2020 11:50

Golang Flame Graphs

package main

import "runtime/pprof"

func main() {
	pprof.StartCPUProfile(os.Stderr)
	defer pprof.StopCPUProfile()

 // ...

assafmo / sysctl.conf

Created December 12, 2018 08:40

set BBR for TCP

	# put in /etc/sysctl.conf

	net.core.default_qdisc=fq
	net.ipv4.tcp_congestion_control=bbr

assafmo / rescan_hd.sh

Created December 12, 2018 11:09

Rescan hard drives without rebooting

	#!/bin/bash
	echo "- - -" > sudo tee /sys/class/scsi_host/*/scan

assafmo / fstab

Last active December 13, 2018 19:07

Mount /tmp as tmpfs

	# https://blog.ubuntu.com/2016/01/20/data-driven-analysis-tmp-on-tmpfs
	# In /etc/fstab:

	tmpfs /tmp tmpfs rw,size=128m,noexec,nosuid 0 0

assafmo / bluetooth_off.sh

Created December 13, 2018 20:55

Turn Bluetooth off on Linux

assafmo / client.sh

Last active May 30, 2019 09:45

SSH Over TOR (Good for any service, also to expose a server behind NAT)

	#!/bin/bash

	sudo apt install -y tor

	# get hostname from /var/lib/tor/ssh/hostname on the server
	torsocks ssh [email protected]

assafmo / url_to_pdf.sh

Last active December 27, 2018 16:12

Use headless chrome to print a page to pdf

	#!/bin/bash

	google-chrome --headless --disable-gpu --print-to-pdf="$PDF_NAME" "$URL"

assafmo / ssh_config

Last active December 30, 2018 19:51

SSH Multiplexing

assafmo / csv

Last active February 28, 2019 11:23

Handle CSV files with awk

gawk -v FPAT=\'[^,]*|"[^"]*"\' '{print $3}' < test.csv

assafmo / unmount.sh

Created February 19, 2019 10:10

Safely unmount disk on ubuntu

	#!/bin/bash

	DEV=$(mount \| grep /media/ \| awk '{print $1}')
	udisksctl unmount -b "$DEV"
	udisksctl power-off -b "$DEV"