Life Long Programmer's Community Log: 2013-12-08

A Great Deal, Just bought one!!! Office Depot offering 16GB Google Nex

A Great Deal, Just bought one!!! Office Depot offering 16GB Google Nexus 7 tablet for $179.99 through December 21 http://www.zdnet.com/office-depot-offering-16gb-google-nexus-7-tablet-for-179-99-through-december-21-7000024266/

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Epic Gif of the Day! Science has the Solution.

Epic Gif of the Day!

Science has the Solution.

Jeffery yuan (https://plus.google.com/101157854606139706613/posts/b64t3skw5cn) via Bikash Das (https://plus.google.com/111572266130840576014/posts/ihLSmML22BU)

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via LifeLong Community

How to Disable SELinux

How to Enable/Disable SELinux

Temporarily switch off enforcement

echo 0 >/selinux/enforce

echo 1 >/selinux/enforce

Permanently Disable

vi /etc/selinux/config

SELINUX=disabled

SELINUXTYPE=targeted

http://www.crypt.gen.nz/selinux/disable_selinux.html

from Google Plus RSS Feed for 101157854606139706613 http://www.crypt.gen.nz/selinux/disable_selinux.html

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Linux DNS Setup

http://www.redhat.com/magazine/025nov06/features/dns/
http://www.redhat.com/magazine/026dec06/features/dns/
http://ostechnix.wordpress.com/2013/01/25/setup-dns-server-step-by-step-in-centos-6-3-rhel-6-3-scientific-linux-6-3-3/
yum install bind bind-utils bind-libs bind-chroot caching-nameserver -y
vi /var/named/chroot/etc/named.conf
acl localdomain-com { 172.19/16; };
options {
directory "/var/named";
allow-query { localdomain-com; };
forwarders { 172.19.59.7; 172.19.218.7; }; #IP of upstream ISP nameserver(s)
#forward only; #rely completely on our upstream nameservers
};
zone "localdomain.com" IN {
type master;
file "localdomain.com.zone";
};
zone "19.172.in-addr.arpa" IN {
type master;
file "172.19.zone";
};

cd /var/named/chroot/var/named
touch localdomain.com.zone
chown named:named localdomain.com.zone
chmod 644 localdomain.com.zone
touch 172.19.zone
chown named:named 172.19.zone
chmod 644 172.19.zone

vi localdomain.com.zone
$TTL 1D
localdomain.com. IN SOA bigdata0.localdomain.com. foo.bar.tld. (
200612060 ; serial
2H ; refresh slaves
5M ; retry
1W ; expire
1M ; Negative TTL
)

@ IN NS bigdata0.localdomain.com.

bigdata0.localdomain.com. IN A 172.19.97.141
bigdata1.localdomain.com. IN A 172.19.101.66
bigdata2.localdomain.com. IN A 172.19.102.56

bigdata0 172.19.97.141
bigdata1 172.19.101.66
bigdata2 172.19.102.56

vi 172.19.zone
$TTL 1D
$ORIGIN 19.172.IN-ADDR.ARPA.

@ IN SOA bigdata0.localdomain.com. foo.bar.tld. (
200612060 ; serial
2H ; refresh slaves
5M ; retry
1W ; expire
1M ; Negative TTL
)

IN NS bigdata0.localdomain.com.
141.197 IN PTR bigdata0.localdomain.com.
66.101 IN PTR bigdata1.localdomain.com.
56.102 IN PTR bigdata2.localdomain.com.

bigdata0 172.19.97.141
bigdata1 172.19.101.66
bigdata2 172.19.102.56

vi /etc/resolv.conf
search localdomain.com
nameserver 172.19.97.141

chmod 644 /var/named/chroot/etc/named.conf
named-checkconf /var/named/chroot/etc/named.conf

Prevent get overwritten
vi /etc/sysconfig/network-scripts/ifcfg-eth0
PEERDNS=no

service named restart
chkconfig named on
/etc/init.d/network restart

rndc reload
rndc querylog

/etc/init.d/iptables stop
chkconfig iptables off
host -v -t A `hostname`

Disable SELinux
setenforce 0
vi /etc/selinux/config
SELINUX=disabled
SELINUXTYPE=targeted

Making the Most Of Google Drive With Integrated Apps http://www.makeus

Making the Most Of Google Drive With Integrated Apps http://www.makeuseof.com/tag/making-the-most-of-google-drive-with-integrated-apps/

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GDrive + PdfZen is perfect I have one account storing all my pdfs. I l

GDrive + PdfZen is perfect

I have one account storing all my pdfs. I like to read them and while read pdf, I will make some change, such as mark or highlight.

GDrive + PdfZen solves my problem perfectly.

It allows me to read them anywhere and edit them anywhere. Life is better :)

One Example:

https://pdfzen.com/1914b7

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Synchronize the system clock to Network Time Protocol (NTP) under Fedora or Red Hat Linux

Synchronize Linux System Clock

yum install ntp

/etc/init.d/ntpd start

ntpdate pool.ntp.org

http://www.cyberciti.biz/tips/synchronize-the-system-clock-to-network-time-protocol-ntp-under-fedora-or-red-hat-linux.html

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Raspberry Pi is Hot, so just bought this Ultimate Starter Kit--Include

Raspberry Pi is Hot, so just bought this Ultimate Starter Kit--Includes Raspberry Pi Board+11 Essential Accessories from Amazon. Expecting..

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HowTo Disable The Iptables Firewall in Linux

HowTo Enable/Disable The Iptables Firewall in Linux( #linux , #lifelongprogrammer )

http://www.cyberciti.biz/faq/turn-on-turn-off-firewall-in-linux/

# /etc/init.d/iptables save

# /etc/init.d/iptables stop

# chkconfig iptables off

# /etc/init.d/iptables start

# chkconfig iptables on

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Learning R Language

RStudio
http://www.rstudio.com/

RevolutionAnalytics / RHadoop
https://github.com/RevolutionAnalytics/RHadoop/wiki

Enabling R on Hadoop
http://www.slideshare.net/Hadoop_Summit/enabling-r-on-hadoop

R and Hadoop Data Analysis – RHadoop
http://bighadoop.wordpress.com/2013/02/25/r-and-hadoop-data-analysis-rhadoop/

*Save Your Plots*
http://www.r-bloggers.com/automatically-save-your-plots-to-a-folder/
jpeg(file = "C://R//SAVEHERE//myplot.jpg")
plot(x,y)
dev.off()

Videos
http://www.youtube.com/watch?v=enVcKR9RMzQ

solr

Solr and R language ( #solr , #lifelongprogrammer )

https://github.com/ropensci/solr require('solr')

require('RJSONIO'

a <- solr_search(q='*:*', rows=2, fl='id', url=url, key=key)

a$response

Via https://github.com/ropensci/solr via http://grss.magentariver.com/feed?gid=101157854606139706613