A Technical I.T./DevOps Blog
Problem scenario
You tried this command as root: apt-get install php
But you got this as an error message:
Reading package lists… Done
Building dependency tree
Reading state information… Done
E: Unable to locate package php
What do you do?
Solution
Run this command as root: apt-get -y install php5
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Continue reading “How Do You Install PHP on Your Ubuntu Server?”
Problem scenario
You tried this command: sudo apt-get install httpd
But you got this error message as a result:
“…E: Package ‘httpd’ has no installation candidate”
You tried this command as root:
apt-get install apache2-bin 2.4.7-1ubuntu4.13
But you get this error message as a result:
Reading package lists… Done
Building dependency tree
Reading state information… Done
E: Unable to locate package 2.4.7-1ubuntu4.13
E: Couldn’t find any package by regex ‘2.4.7-1ubuntu4.13’
How do you install Apache web server on your Ubuntu server?
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Problem scenario
You have a smart phone (iOS, Android, BlackBerry, Microsoft Lumia, Windows 10 Mobile, or Windows Phone etc.) and you have a limited data plan. You want to copy over (or bring/move) files (e.g., numerous photos). The problem is that you do not want to use hundreds of megabytes of data from your roaming MiFi/3G/4G monthly plan. It takes a great deal of manual labor to select the files and then transfer them (e.g.,
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Problem scenario: You are trying to install various packages on Ubuntu 14.04, but they are not working. You are root and you run this command (where postgresql is the name of the package you want to install):
apt-get install postgresql postgresql-contrib
This error message is what you see as a result:
“Reading package lists… Done
Building dependency tree… Done
E: Unable to locate package postgresql
E: Unable to locate package postgresql-contrib”
How do you install new packages on your Ubuntu server?
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Continue reading “How Do You Install Software and OS Packages on an Ubuntu Server?”
This is a great article on fake powerbanks (also referred to as “external USB battery chargers”). Batteries with advertised capacities of 100,000 mAh to 300,000 mAh with low prices should be considered suspicious. If it seems too to be true, it probably is. Here is a 50,000 mAh battery pack that appears legitimate.
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Continue reading “Beware of Fake USB External Batteries / Fake Powerbanks”
Problem scenario
You want a PowerShell script to place files from a folder into one zip file.
When using PowerShell version 3, your script throws this error:
‘
Exception calling “CreateFromDirectory” with “2” argument(s): “The path is not of a legal form.”
At line…
CategoryInfo : NotSpecified: (:) [], MethodInvocationException
FullyQualifiedErrorId
…
Problem scenario: When you log into your Windows 7 computer, you get this error:
“AccelerometerSt.exe – Application error
The application was unable to start correctly (0x000007b). Click OK to close the application.”
How do you keep this error from popping up every time you log in?
Solution
Reinstall HP 3D Driveguard. You used to be able to download the media from here (http://h20564.www2.hp.com/hpsc/swd/public/detail?swItemId=ob_124661_1).
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Spiceworks, Solar Winds, and Cacti are all well-known effective network monitoring tools. A lesser known company called Lizard Systems has quality software for network monitoring. Techworld.com and PCworld have favorable reviews of Lizard Systems’ Network Scanner. The Find Mac Address product has an easy installation and can find MAC addresses without network administrator rights to a given router. For an alternative to Nagios or Sysinternals,
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While HP’s website (http://www.intel.com/content/dam/www/public/us/en/documents/faqs/intel-anti-theft-service-faq.pdf) for a long while claimed that their computers (i.e., laptops and notebooks) have the benefits of Intel AT, Intel says they stopped it in January of 2015. This link http://www.intel.com/content/dam/www/public/us/en/documents/faqs/intel-anti-theft-service-faq.pdf used to have more information.
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Continue reading “Intel No Longer Provides Anti-Theft Service”
Update 1/5/18: These directions below are outdated.
If you are looking for the newest directions to install open source Hadoop, click here.
The directions below are left here as a reference for legacy purposes. To install open source Hadoop on an Ubuntu server, see this article.
Previous update was on 11/7/17
Problem scenario
You want to deploy (set up and configure) Hadoop on an Ubuntu server.
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Continue reading “How to Install Open Source Hadoop on an Ubuntu Linux Server? (old directions)”