file_get_html returns null, but cURL should fix it [PHP]
I have been using file_get_html function of Simple HTML DOM parser to parse and extract the contents of a remote...
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Android Cellular data Status Disconnected? [Solution]
Are you facing an issue with your cellular data? or do you see an exclamation mark next to the mobile data...quotaon: Quota format not supported in kernel : Ubuntu [Solved]
I was recently working with quota tool on Ubuntu and was trying to configure quota for / partition. After the configuration, when...Install and Configure User and Group Disk quota on Ubuntu and Debian
Most of the time, the user keeps all of his junk/unwanted files in his home directory and never bothers to...How to Fix “nova.compute.manager Stderr: u”qemu-img: Could not open”
All of a sudden, the Hypervisor Summary page in Horizon dashboard was not updating the usage stats of vCPUs, RAM...Fix HTTP 403 Forbidden, Failed to Open Stream – PHP Copy function
I wrote a simple PHP program to copy an image from a website to local directory. The copy() function will...How to install LEMP on Ubuntu 14.04 LTS
LEMP is a group of open source software stack used to setup web server, database and PHP on a Linux...Write a Batch Script to Automate File Transfer Between Linux & Windows using WinSCP
Question: I have been running cron on a Linux server to take a backup of my website once in a...Fix FTP Passive Mode problem on OpenStack & EC2 VMs
Have you installed VSFTP in your OpenStack or Amazon EC2 VM and getting errors such as “Entering passive mode…connection failed“?...How to Allow SFTP and disallow SSH?
In this tutorial, I will explain how to configure SSH to allow SFTP and disallow SSH login access. Solution: Well, SFTP...Install PHP 7 on a fresh Ubuntu VPS: [Fix] Unable to locate package PHP
Recently one of my client provided a fresh VPS and asked me to install PHP 7, Apache and MySQL. While...What is “Yes This Is A Really Long Request URL” connection attempt to your webserver?
Today, I noticed a strange connection attempt to my server requesting for a long file name – that starts as...COMODO SSL Certificate Installation : Nginx
COMODO SSL Certificate Installation – I installed LEMP stack for one of my client on his CentOS 7 machine and...Call to undefined function simplexml_load_file() – PHP Error [Solved]
While working on a migration of a Joomla powered website on to a new VPS with PHP version 7.0 and...StartSSL Distrusted (Terminated), Migrate to LetsEncrypt!
TRUST is the word that comes to our mind when we speak about Certificate Authority. StartSSL, a certificate authority that provides free SSL...Understanding Affinity/Anti-Affinity Group Policies in OpenStack Mitaka
Nova service controls where the instances are started within OpenStack cloud environment. It means, the nova-scheduler decides which hypervisor will...Ctrl+S freezes Vi Editor & Unix terminal/PuTTY? Here’s how you can resume it!
Working on a Unix terminal and all of a sudden the terminal freezes after pressing Ctrl+S? Well, did you see the...Delete Blank Rows in Excel – A Quick Tip!
Do you want to delete blank rows in an Excel file, the faster way? Excel generally uses the blank rows...How to update GPG key for MySQL APT repository on Debian/Ubuntu?
If you are getting an error “GPG error and Duplicate sources.list” while configuring MySQL repository for installing MySQL server version...