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Ubuntu HowTos and Guides

Tutorials, howtos, Q & A about most popular Linux distribution – Ubuntu Linux. Topic includes Ubuntu server security, installation, firewall, web-server, mail-server, proxy server and special focus on desktop users. ( rss feed ).

How to create unprivileged LXC container on Ubuntu Linux 14.04 LTS

How do I install, create and manage unprivileged LXC containers on Ubuntu Linux version 14.04 LTS server?
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Ubuntu Linux Change Hostname (computer name)

I am a new Ubuntu Linux laptop user. I setup my computer name to ‘tom’ during installation but now I would like to change the computer name to ‘jerry’. How can I remove tom and set it to jerry on Ubuntu Linux? How do I change the Ubuntu computer name from ‘ubuntu’ to ‘AvlinStar’?
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How to install KVM on Ubuntu 14.04 LTS Headless Server

Kernel-based Virtual Machine (KVM) is a virtualization module for the Linux kernel that turns it into a hypervisor. How can I install KVM, setup guest operating system as the back-end virtualization technology for non-graphic Ubuntu Linux 14.04 LTS server?
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How to block an IP address with ufw on Ubuntu Linux server

I am using UFW to manage firewall on my Ubuntu Linux 12.04/14.04 LTS server. I need to block a specific IP address from accessing my server. How do I block an IP address using ufw?
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Ubuntu Linux check cron log file error or messages in /var/log/cron.log file

I am trying to find errors or message for my cron job on Ubuntu Linux server. Where is the cron log in Ubuntu Linux 12.04/14.04 LTS server? How do I check cron logs in Ubuntu server? How to check if crond server is enabled and/or is running properly on Ubuntu Linux server?
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Debian / Ubuntu Linux Delete Old Kernel Images Command

I‘m a new Ubuntu Linux user and noticed that old kernel still exists in my system. Why doesn’t Ubuntu remove old kernels automatically? How do I delete old unused kernel images to free disk space. How to remove unused old kernel images on Ubuntu Linux safely?
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How to Set Locales (i18n) On a Linux or Unix

What is a “locale” on a Linux operating system? How do I set or get locals (i18n) values on a Linux operating system?
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How To Use apt-get with IPv4 or IPv6 Transport on a Ubuntu or Debian or Mint Linux

It is possible that I can forces my apt-get command command only use IPv6 or Ipv4 transport on a Debian or Ubuntu Linux server?
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How to Compile and Install Linux Kernel v4.5 Source On a Debian / Ubuntu Linux

How do I download, compile and install the latest version of the Linux kernel on a Debian Linux v8.x or Ubuntu Linux LTS home server or my laptop? How do I build and install a custom Linux kernel on a Debian or Ubuntu Linux based system?
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How To Join Several Partition Together To Form a Single Larger One On a Linux Using mhddfs

I‘ve three old hard drives: sized 60, 60 and 120 GB. And 200 GB of video files, which I need to store on these drives. How would I store all my files on three hard drive without split a file into pieces or creating RAID array? How can I combines a several mount points (partitions) into the single one on a Linux operating systems?
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