hanvari

Generating ASCII Diagrams/Graphs:

• https://unix.stackexchange.com/questions/126630/creating-diagrams-in-ascii#126638'
  • https://github.com/ironcamel/Graph-Easy
    • https://metacpan.org/pod/Graph::Easy
    • http://graphviz.org/
  • http://search.cpan.org/dist/App-Asciio/lib/App/Asciio.pm
  • https://www.thegeekstuff.com/2009/12/how-to-create-ascii-drawings-in-vim-editor-draw-boxes-lines-ellipses-arrows-inside-text-file/#more-2732
  • http://www.jave.de/
  • http://ditaa.sourceforge.net/
• http://search.cpan.org/~tels/Graph-Easy/bin/graph-easy

hanvari

A Better version:

https://www.cheatography.com/weidadeyue/cheat-sheets/jupyter-notebook/

Toc

Keyboard shortcuts

The IPython Notebook has two different keyboard input modes. Edit mode allows you to type code/text into a cell and is indicated by a green cell border. Command mode binds the keyboard to notebook level actions and is indicated by a grey cell border.

hanvari

How to Install / Bootcamp Windows 10 on a mid-2011 iMac using USB

Apple has released support for bootcamping Windows 10, but only on 2012 Macs and later. Despite not being supported. it is possible to install Windows 10 on earlier iMacs and it seems to run quite well.

IMPORTANT: Unplug all external and physical hard drives (where possible) that you won't be installing to to avoid accidentally erasing them. Also make note of which drives and partitions remain (e.g. System and Storage hard drives), and be super careful to not erase the wrong one.

RECOVERY: If you nuke your machine, restore your time machine backup. Instructions here.

Requirements

hanvari

# ANDROID / ECLIPSE

# built application files
*.apk
*.ap_

# files for the dex VM
*.dex

# Java class files

hanvari

1. Setup:

git clone <repo-url>
git branch -m master vendor
#check configurations
git config --get-regexp 'branch.vendor.*'
#master will contain customizations
git checkout -b master

hanvari

#reading 1000 random 4k blocks from first 16GB of a disk

time for i in `seq 1 1000`; do
    dd bs=4k if=/dev/sda count=1 skip=$(( $RANDOM * 128 )) >/dev/null 2>&1;
done

#References:
# https://unix.stackexchange.com/questions/65595/how-to-know-if-a-disk-is-an-ssd-or-an-hdd
# https://serverfault.com/questions/551453/how-do-i-verify-that-my-hosting-provider-gave-me-ssds/551495#551495

hanvari

git clone git@github.com:Benjamin-Dobell/Heimdall.git
cd Heimdall
mkdir build
cd build
cmake -DDISABLE_FRONTEND=ON -DCMAKE_BUILD_TYPE=Release ..
LIBRARY_PATH=/usr/local/lib make


#References:
#https://raw.githubusercontent.com/Benjamin-Dobell/Heimdall/master/Linux/README

hanvari

git fetch --all
git reset --hard origin/master
git pull origin master

hanvari

We could simply set the SIGCHLD signal to be handled by SIG_IGN (ignored), and based on POSIX.1-2001 it will clean up the terminated child process.

struct sigaction sa;
sa.sa_handler = SIG_IGN;
sigemptyset(&sa.sa_mask);
sa.sa_flags = 0;
if (sigaction(SIGCHLD, &sa, 0) == -1) {
  perror(0);
  exit(1);
}

hanvari

#Apache Hadoop Quick Start Guide

This content was originally prepared for the course CMPUT 681 - Parallel and Distributed Systems at the University of Alberta (Fall 2016):
https://www.ualberta.ca/computing-science/graduate-studies/course-directory/courses/parallel-and-distributed-systems

Installing Hadoop on a cluster

Manual Installation on RAC (OpenStack) Cluster:

Obtain latest stable Hadoop release: https://hadoop.apache.org/releases.html