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cd my-project

heroku login

heroku create appname

git init

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replace 503 with your keyword

tail -f /var/log/apache2/access.log | perl -pe 's/ 503 /\e[1;31;43m$&\e[0m/g'

sudo bash -c 'tail -f /var/log/apache2/access.log| grep "[0-9] 5[0-9][0-9] \"" | (while read; do date; /usr/local/sbin/profile-php; done)'

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sudo sync && sudo echo 3 | sudo tee /proc/sys/vm/drop_caches

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ps -ylC apache2 | awk '{x += $8;y += 1} END {print "Apache Memory Usage (MB): "x/1024; print "Average Proccess Size (MB): "x/((y-1)*1024)}'

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touch README.md
git init
git add README.md
git commit -m "first commit"
git remote add origin https://github.com/abc/myproject.git
git push -u origin master

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Domain Authority represents Moz's best prediction for how a website will perform in search engine rankings. Use Domain Authority when comparing one site to another or tracking the “strength” of your website over time. We calculate this metric by combining all of our other link metrics—linking root domains, number of total links, MozRank, MozTrust, etc.—into a single score.

To determine Domain Authority, we employ machine learning against Google's algorithm to best model how search engine results are generated. Over 40 signals are included in this calculation. This means your website's Domain Authority score will often fluxuate. For this reason, it's best to use Domain Authority as a competitive metric against other sites as opposed to a historic measure of your internal SEO efforts.

How is Domain Authority Scored?
We score Domain Authority on a 100-point, logarithmic scale. Thus, it's easier to grow your score from 20 to 30 than it would be to grow from 70 to 80.

Domain Authority vs. Page Authority
Whereas

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Page Authority is Moz's calculated metric for how well a given webpage is likely to rank in Google.com's search results. It is based off data from the Mozscape web index and includes link counts, MozRank, MozTrust, and dozens of other factors. It uses a machine learning model to predictively find an algorithm that best correlates with rankings across the thousands of search results that we predict against.

How is Page Authority Scored?

We score Page Authority on a 100-point, logarithmic scale. Thus, it's easier to grow your score from 20 to 30 than it would be to grow from 70 to 80. We constantly update the algorithm used to calculate Page Authority, so you may see your score fluctuate from time to time.

Page Authority vs. Domain Authority

Whereas Page Authority measures the predictive ranking strength of a single page, Domain Authority measures the strength of entire domains or subdomains. The same is true for metrics such as MozRank and MozTrust.

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MozRank represents a link popularity score. It reflects the importance of any given web page on the Internet. Pages earn MozRank by the number and quality of other pages that link to them. The higher the quality of the incoming links, the higher the MozRank.

How is MozRank scored?

We calculate this score on a logarithmic scale between 0 and 10. Thus, it's much easier to improve from a MozRank of 3 to 4 than it is to improve from 8 to 9. An "average" MozRank of what most people think of as a normal page on the Internet is around 3.

How can MozRank be improved?

A web page's MozRank can be improved by getting lots of links from semi-popular pages or a few links from very popular pages.

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apt-get install libcurl4-gnutls-dev libexpat1-dev gettext \ libz-dev libssl-dev
apt-get install git-core

cd ~/.ssh
ls -al
# Lists the files in your .ssh directory

ssh-keygen -t rsa -C "[email protected]"
# Creates a new ssh key, using the provided email as a label
# Generating public/private rsa key pair.

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JAVA-JDK ( software development kit)

apt-get install  openjdk-7-jdk 
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INSTALL SELENIUM

mkdir  /home/ubuntu/selenium
cd /home/ubuntu/selenium
http://selenium-release.storage.googleapis.com/2.41/selenium-server-standalone-2.41.0.jar