eqhmcow

#!/bin/bash

# As the "bufferbloat" folks have recently re-discovered and/or more widely
# publicized, congestion avoidance algorithms (such as those found in TCP) do
# a great job of allowing network endpoints to negotiate transfer rates that
# maximize a link's bandwidth usage without unduly penalizing any particular
# stream. This allows bulk transfer streams to use the maximum available
# bandwidth without affecting the latency of non-bulk (e.g. interactive)
# streams.

mjf

#! /bin/sh

#  Posix shell script to convert between time in human form and date
#  Copyright (C) 2011 Matous J. Fialka, <http://mjf.cz/>
#  Released under the terms of The MIT License

if humantime=`humantime -f $@`
then
    date -d "$humantime seconds" '+%F %T'
fi

mjf

#! /bin/sh

#  Posix shell script to connect two shell commands by bi-directional pipe
#  Copyright (C) 2011 Matous J. Fialka, <http://mjf.cz/>
#  Released under the terms of The MIT License

if [ $# -ne 2 ]
then
	printf -- 'Usage: bip COMMAND COMMAND\n'
	exit 0

mjf

#! /bin/sed -f

# Transform ASCII-art tables into XTerm-art tables
# Copyright (C) 2011 Matous J. Fialka, <http://mjf.cz/>
# Released under the terms of The MIT License

# Horizontal and vertical line crossing
s/-|-/-^[(0^On^[(B-/g

# Top side and vertical line crossing

mjf

/**
 *  Strip Juniper Comments
 *  Copyright (C) 2011 Matous J. Fialka, <http://mjf.cz/>
 *  Released under the terms of The MIT License
 */

#include <stdio.h>

enum {
	ASCII_NUL = '\000',

mjf

#! /bin/sh

#  Record - record shell session using script(1)
#  Copyright (C) 2011 Matous J. Fialka, <http://mjf.cz/>
#  Released under the terms of The MIT License

RECORD_PATH="$HOME/.typescripts/%Y/%m/%d"
RECORD_FILE='%H%M%S'
RECORD_TIMING_FILE="$RECORD_FILE.timing"

nogweii

fs.file-max = 65535
fs.inode-max = 32768
fs.suid_dumpable = 0
kernel.core_uses_pid = 1
kernel.exec-shield = 1
kernel.maps_protect = 1
kernel.msgmax = 65536
kernel.msgmnb = 65536
kernel.panic = 30
kernel.panic_on_oops = 30

hunner

clear Lock
clear Control
keycode   9 = Caps_Lock NoSymbol Caps_Lock NoSymbol Caps_Lock
keycode  37 = Escape NoSymbol Escape NoSymbol Escape
keycode  66 = Control_L NoSymbol Control_L NoSymbol Control_L
add Lock    = Caps_Lock
add Control = Control_L Control_R

mjf

#! /bin/sed -f

#  pinyin2utf8.sed -- Convert US-ASCII Pinyin to UTF-8
#  Copyright (C) 2012 Matous J. Fialka (mjf), <http://mjf.cz/>
#  Released under the terms of The MIT License
#
#  DESCRIPTION
# 	Script converts all occurences of US-ASCII encoded Pinyin text
# 	enclosed by the solidus characters pairs to UTF-8 encoded text.
#

hellerbarde

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