tovbinm

1. Open Mac OS x terminal
2. Go to Preferences -> Settings -> Keyboard 
3. Redefine keys to "Send string to shell" as follows:

Key	Escape Sequence
Home	\033[1~
End	\033[4~
Page Up	\033[5~
Page Down	\033[6~

tovbinm

ec2hm=`curl -s http://169.254.169.254/latest/meta-data/public-ipv4`; echo ec2-${ec2hm//./-}.compute-1.amazonaws.com; unset ec2hm

tovbinm

var c = require('riak-js').getClient({ host: 'hostname', port: 8098 });
var mr = c.add('bucket').map(function m(v){return [1]}).reduce(function(v) { return [v.reduce(function(t, val) { return t + val; }, 0)]});
mr.run({timeout: 10000000});

tovbinm

ADD JAR  s3://<s3-bucket>/jars/hive_contrib-0.5.jar; 

CREATE TEMPORARY FUNCTION now as 'com.mt.utils.udf.Now';
CREATE TEMPORARY FUNCTION user_agent_f as 'com.mt.utils.UserAgent';

set hive.merge.mapredfiles=true;
set hive.merge.mapfiles=true;
set hive.merge.size.per.task=500000000;

CREATE EXTERNAL TABLE data

tovbinm

#!/bin/bash
apt-get -y update
apt-get -y install mdadm
echo "y" | mdadm --create /dev/md0 --level 0 --raid-devices 2 /dev/xvdb /dev/xvdc
echo "DEVICE /dev/xvdb /dev/xvdc" > /etc/mdadm/mdadm.conf
mdadm --detail --scan >> /etc/mdadm/mdadm.conf
blockdev --setra 65536 /dev/md0
mkfs.ext3 -F /dev/md0
mkdir -p /mnt/dataraid && mount -t ext3 /dev/md0 /mnt/dataraid -o noatime
echo "/dev/md0 /mnt/dataraid ext3 noatime 0 0" | tee -a /etc/fstab

tovbinm

1. Open terminal inside your virtual machine and run:  
   sudo dd if=/dev/zero of=EMPTY bs=1M
   sudo rm ./EMPTY

  This will zeroify all the empty blocks on your disk.

2. Shutdown you virtual box.

3. Check what type of virtual drive do you have: VMDK or VDI. VirtualBox shrinking works only with VDI files. 
   If you have a VDI file, proceed to the last step, otherwise you'll need to perform  an additional step of converting your VMDK file 

tovbinm

#!/usr/bin/env sh

##
# This is script with usefull tips taken from:
#   https://github.com/mathiasbynens/dotfiles/blob/master/.osx
#
# install it:
#   curl -sL https://raw.github.com/gist/2108403/hack.sh | sh
#

tovbinm

1.
# vim /etc/sysctl.conf
fs.file-max = 999999
net.ipv4.tcp_rmem = 4096 4096 16777216
net.ipv4.tcp_wmem = 4096 4096 16777216
net.ipv4.ip_local_port_range = 1024 65535

2.
# vim /etc/security/limits.conf
root	- nofile 999999

tovbinm

wget -O s3c.zip http://goo.gl/skBTi && unzip s3c.zip && cd ./s3cmd-1.1.0-beta3 && python setup.py install && cd ../ && rm -rf ./s3c.zip ./s3cmd-1.1.0-beta3

tovbinm

echo "syntax on" >> ~/.vimrc