Install pagespeed module ( mod_pagespeed ) on Apache Web Server : CentOS / RHEL
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Install pagespeed module ( mod_pagespeed ) on Apache Web Server : CentOS / RHEL

The opensource pagespeed module ( mod_pagespeed ) is widely used for speed up the websites. Pagespeed module is available for Apache and Nginx . Currently, to list your website on google top search page , your site must be opened quickly. Hence, speed matters for user end experience also. Now a days, users do not…

How to start / stop / restart / reload  iptables on CentOS 7 / RHEL 7

How to start / stop / restart / reload iptables on CentOS 7 / RHEL 7

On the journey of exploring the newly releaed CentOS 7 . I found another interesting thing. This is related to iptables. In previous CentOS versions, we used to stop iptables service by using the command service iptables stop or /etc/init.d/iptables stop On newly shined CentOS 7 / Red Hat 7 , with systemctl command we…

Remove python module installed from source code on Linux

Remove python module installed from source code on Linux

The post describe about how to remove python module installed from source code on Linux. We use python setup.py install command to install the python module from source code. The related files copied to various path. Hence we will target these files copied in various path You must have extracted(untar) source code of that particular…

Setup self signed ssl certificate on Owncloud 6 in Ubuntu 14.04 LTS Server
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Setup self signed ssl certificate on Owncloud 6 in Ubuntu 14.04 LTS Server

In this post we will learn, how to setup self signed ssl certificate on Owncloud 6 in Ubuntu 14.04 LTS Server . The steps are almost same as we have done in post “Setup Owncloud 6 with self signed SSL certificate on Ubuntu 13.10” With the arrival of new Ubuntu version 14.04 LTS, there are…

owncloud error : You are accessing the server from an untrusted domain

owncloud error : You are accessing the server from an untrusted domain

Few days back I setup Owncloud 6 on Ubuntu 14.04 . After a gap of a few days, I again started the testing server to do some new practical. But after opening the Owncloud I got this given below error – You are accessing the server from an untrusted domain. Please contact your administrator. If…

Install lxml by using pip command on Ubuntu 14.04 LTS

Install lxml by using pip command on Ubuntu 14.04 LTS

lxml is a python library used for processing XML and HTML.In this post we will learn, how to install lxml by using pip command. We will use pip to install lxml on Ubuntu 14.04 LTS. It is important to install dependency prior using pip command to install lxml Install the dependencies. sudo apt-get install libxml2-dev…

sed command to display text between two strings or keywords
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sed command to display text between two strings or keywords

In this post we will know about sed command to display text between two strings or keywords or words . Sed is a stream editor. A stream editor is used to perform basic text transformations on an input stream (a file or input from a pipeline) (Definition Reference from man page of sed). Knowledge of…

sed : find the pattern (keyword) and delete the line from file
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sed : find the pattern (keyword) and delete the line from file

sed is stream line editor utility in unix operating systems.sed is a line-oriented text processing utility: it reads text, line by line, from an input stream or file, into an internal buffer called the pattern space. Each line read starts a cycle. To the pattern space, sed applies one or more operations which have been…