Sejong Yang kingsj0405

Common Options

-#, --progress-bar Make curl display a simple progress bar instead of the more informational standard meter.

-b, --cookie <name=data> Supply cookie with request. If no =, then specifies the cookie file to use (see -c).

-c, --cookie-jar <file name> File to save response cookies to.

Latency numbers every programmer should know

L1 cache reference ......................... 0.5 ns
Branch mispredict ............................ 5 ns
L2 cache reference ........................... 7 ns
Mutex lock/unlock ........................... 25 ns
Main memory reference ...................... 100 ns             
Compress 1K bytes with Zippy ............. 3,000 ns  =   3 µs
Send 2K bytes over 1 Gbps network ....... 20,000 ns  =  20 µs
SSD random read ........................ 150,000 ns  = 150 µs

Read 1 MB sequentially from memory ..... 250,000 ns = 250 µs

tmux cheatsheet

As configured in my dotfiles.

start new:

tmux

start new with session name:

	Download Google Drive files with WGET

	Example Google Drive download link:

	https://docs.google.com/open?id=[ID]
	To download the file with WGET you need to use this link:

	https://googledrive.com/host/[ID]

	Example WGET command:

	#!/usr/bin/python
	import os, zipfile

	for filename in os.listdir("."):
	if filename.endswith(".zip"):
	print filename
	name = os.path.splitext(os.path.basename(filename))[0]
	if not os.path.isdir(name):
	try:
	zip = zipfile.ZipFile(filename)

	@echo off
	FOR /f "tokens=*" %%i IN ('docker ps -aq') DO docker rm %%i
	FOR /f "tokens=*" %%i IN ('docker images --format "{{.ID}}"') DO docker rmi %%i