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watch --difference=cummulative --interval=1 '(echo device read_IOs read_merges read_sectors read_ticks write_IOs write_merges write_sectors write_ticks in_flight io_ticks time_in_queue; for file in /sys/block/*/stat; do echo -n $file; cat $file; done) | column -t'
# OUTPUTS:
#device                 read_IOs  read_merges  read_sectors  read_ticks  write_IOs  write_merges  write_sectors  write_ticks  in_flight  io_ticks  time_in_queue
#/sys/block/dm-0/stat   116962    0            2212746       314096      7705653    0             150218536      609670232    0          644428    610921004
#/sys/block/dm-1/stat   116479    0            2208882       313324      7686986    0             150218536      609676068    0          644616    611418072
#/sys/block/dm-2/stat   302       0            2416          780         0          0             0              0            0          148       780
#/sys/block/sda/stat    91181     26273        2217246       74876       7314854    388030        150261802      16954364 

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// -*- coding:utf-8-unix; mode:c; -*-
//
// get the active window on X window system
//

#include <stdlib.h>
#include <stdio.h>
#include <locale.h>

#include <X11/Xlib.h>           // `apt-get install libx11-dev`

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/*
 * A simple libpng example program
 * http://zarb.org/~gc/html/libpng.html
 *
 * Modified by Yoshimasa Niwa to make it much simpler
 * and support all defined color_type.
 *
 * To build, use the next instruction on OS X.
 * $ brew install libpng
 * $ clang -lz -lpng16 libpng_test.c

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/* ヘッダファイルのインクルード */
/* 既定のヘッダファイル */
#include <stdio.h> /* 標準入出力 */
#include <stdlib.h> /* 標準ユーティリティ */
#include <string.h> /* 文字列処理 */
#include <png.h> /* libpng */
/* 独自のヘッダファイル */
#include "bitmap.h" /* ビットマップ */

/* main関数の定義 */

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Steps to configure this server to send mail via gmail relay

1. Download postfix and required packages 
     sudo apt-get install postfix mailutils libsasl2-2 ca-certificates libsasl2-modules
2. Configure gmail as relay host : in /etc/postfix/main.cf
     relayhost = [smtp.gmail.com]:587
     smtpd_sasl_auth_enable = yes
     smtp_sasl_auth_enable = yes
     smtp_sasl_password_maps = hash:/etc/postfix/sasl_passwd
     smtp_sasl_security_options = noanonymous

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#!/bin/bash
#
# watch cgroup 'browsers' memory activity
#
# best served with ...
#
# https://gist.github.com/jakewarren/477ecd1149abe908cbd5cf7a7c9abaa3

self=$0
SUDO=

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#! /usr/bin/python2
import gtk.gdk
w = gtk.gdk.window_foreign_new( gtk.gdk.get_default_root_window().property_get("_NET_ACTIVE_WINDOW")[2][0] )
w.set_decorations( (w.get_decorations()+1)%2 ) # toggle between 0 and 1
gtk.gdk.window_process_all_updates()
gtk.gdk.flush()

# now bind this to super-r or something 

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% ./a.out $WINDOWID
Items: 22
Type: STRING
WM_CLASS[0]: terminator
WM_CLASS[1]: Terminator

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/* 
 * Author: Raheman Vaiya 
 * License: WTFPL (do you really need one?)
 * */

#include <stdio.h>
#include <sys/time.h>
#include <sys/types.h>
#include <dirent.h>
#include <string.h>

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#define _GNU_SOURCE
#include <X11/Xlib.h>
#include <X11/Xatom.h>
#include <err.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

int get_prop_card32(Display *d, Window w, Atom p) {
	Atom actual_type;