tanyuan

Smart Caps Lock: Remap to Control AND Escape (Linux, Mac, Windows)

把 Caps Lock 變成智慧的 Control 以及 Escape ：

• 單獨輕按一下就是 Escape 。
• 若按下時同時按著其他鍵，就會是 Control 。

這應該是 Vim 和 Emacs 的最佳解了！(Emacs? Bash 的快捷鍵就是 Emacs 系列的)

• Send Escape if you tap Caps Lock alone.

mowings

Use ffmpeg to stream video from a dahua 4300s to a file or files

You can use ffmpeg to directly pull frames off of a dahua 4300s at full resolution. May be a good alternative to pricey dvrs which likely cannot record at full resolution, may not work with the camera, or are prohibitevly expensive

Simple Stream to file

Simple stream to file. Full resolution

ffmpeg -loglevel debug -rtsp_transport tcp -i "rtsp://admin:admin@198.175.207.61:554/live" \

-c copy -map 0 foo.mp4

tonsky

(defn- send-udp [s port]
  (with-open [socket (java.net.DatagramSocket.)]
    (let [group  (java.net.InetAddress/getByName "localhost")
          bytes  (.getBytes s)
          packet (java.net.DatagramPacket. bytes (count bytes) group port)]
      (.send socket packet)
      (.close socket))))

(deftask anybar [p port VAL int "AnyBar port"]
  (let [port (or port 1738)]

pandeiro

Instructions

0. Get Boot
1. Copy the above file to $HOME/app.boot
2. $ chmod a+x $HOME/app.boot
3. $ cd && ./app.boot

Deraen

# vi: set ft=ruby :
VAGRANTFILE_API_VERSION = "2"

$script = <<SCRIPT
apt-get install -y git maven openjdk-7-jdk
(
cd /usr/local/bin
wget https://raw.githubusercontent.com/technomancy/leiningen/stable/bin/lein -O lein
chmod +x lein
)

josephholsten

-- === sizeup ===
--
-- SizeUp emulation for hammerspoon
--
-- To use, you can tweak the key bindings and the margins

local sizeup = { }

--------------
-- Bindings --

jnovack

Mosh (mobile shell) is a gift from the Gods(tm). Anyone with spotty internet or wireless connection has suffered the pain of a lost SSH session. Sure, one can fire up screen (or tmux as the kids are using these days), but that's an extra step and you are still using the SSH protocol.

I'm not here to tout the benefits of Mosh, you came here to open it up in your firewall.

1. Create the following file as /etc/firewalld/services/mosh.xml
2. firewall-cmd --add-service=mosh --permanent
3. firewall-cmd --reload

If you tend to have a lot of sessions (not recommended), you can increase the ports, but the default should be fine for most applications.

chaitanyagupta

Reader Macros in Common Lisp

This post also appears on lisper.in.

Reader macros are perhaps not as famous as ordinary macros. While macros are a great way to create your own DSL, reader macros provide even greater flexibility by allowing you to create entirely new syntax on top of Lisp.

Paul Graham explains them very well in [On Lisp][] (Chapter 17, Read-Macros):

The three big moments in a Lisp expression's life are read-time, compile-time, and runtime. Functions are in control at runtime. Macros give us a chance to perform transformations on programs at compile-time. ...read-macros... do their work at read-time.

DASpringate

#' R implementation of `cond` from Lisp
#' allows for arbitrary numbers of conditionals without ugly nested if statements
#' conditionals are entered as pairs of expressions (clauses), 
#' first the expression to be evaluated and second the return value if the expression is true
#' @param ... an even number of expressions as pairs (see example)
#' @param true the `else` expression (Taken from the Lisp (T resultN) see http://www.cis.upenn.edu/~matuszek/LispText/lisp-cond.html)
#' @return The paired value of the first true conditional expression or the value of true
#' @examples
#' x <- runif(1)
#' cond(x < 0.2, "lower tail",

kanaka

#!/bin/bash

wholefile=$(cat $1)
filelen=${#wholefile}

idx=0
chunk=0
chunksz=500
while true; do
    if (( ${#str} < ( chunksz / 2) )) && (( chunk < filelen )); then