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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 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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A very serious security problem has been found in the virtual floppy drive QEMU’s code used by many computer virtualization platforms including Xen, KVM, VirtualBox, and the native QEMU client. It is called VENOM vulnerability. How can I fix VENOM vulnerability and protect my Linux server against the attack? How do I verify that my server has been fixed against the VENOM vulnerability?
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Install LEMP (Linux, Nginx, MySQL and PHP) Stack on Ubuntu Linux 14.04 LTS

I‘m a new Ubuntu Linux user. How do I install the LEMP stack on an Ubuntu Linux 14.04 LTS server using command line options to serve dynamic web apps?
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Ubuntu Linux Create and Add Swap File Tutorial

I‘m a new Ubuntu Linux version 14.04 LTS user. I need additional swap space to improve my Ubuntu server performance. How can I add a swap space on Ubuntu Linux 14.04 LTS using command line over the ssh based session?
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Linux / Unix logtop: Realtime Log Line Rate Analyser

How can I analyze line rate taking log file as input on a Linux system? How do I find the IP flooding my Apache/Nginx/Lighttpd web-server on a Debian or Ubuntu Linux?
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HowTo: Upgrade To a Newer Version of Ubuntu 14.04 LTS

Ubuntu Linux version 14.04 LTS has been released. How do I upgrade to a newer version of Ubuntu 14.04 LTS from Ubuntu 13.10 or 12.04 LTS?
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HowTo: Uninstall MySQL Server in Ubuntu Linux

I‘m a new Ubuntu Linux user and my cloud hosting company installed MySQL server by default. I need to remove it and delete it from my server as I have no use of MySQL server. How can I uninstall MySQL on a Ubuntu based systems?
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Ubuntu Copy File Command

I‘m a new Ubuntu Linux user. This seems like a newbie question, but I can not seem to find examples to copy files on Ubuntu. How do I copy file to another directory on Ubuntu Linux using command line terminal application? How can I copy files via terminal on Ubuntu Linux desktop?
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Ubuntu: Stat / Stop / Restart Iptables Firewall Service

I am a new Ubuntu Linux version 12.04 LTS user. How do I stop or start iptables based firewall service on Ubuntu Linux using bash command line options?
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Ubuntu Linux LTS: Force Kernel Package Updates Which Have Been Kept Back

I am using Ubuntu 12.04.2 LTS (“precise”). I am trying to upgrade all packages using kernel via apt-get upgrade method. But, I am getting the following message:

apt-get upgrade
Reading package lists… Done
Building dependency tree
Reading state information… Done
The following packages have been kept back:
linux-headers-virtual linux-image-virtual mysql-client-5.5 mysql-server-5.5
mysql-server-core-5.5

The following packages will be upgraded:
base-files dosfstools linux-libc-dev linux-libc-dev:i386
4 upgraded, 0 newly installed, 0 to remove and 5 not upgraded.
Need to get 1,847 kB of archives.
After this operation, 2,048 B of additional disk space will be used.
Do you want to continue [Y/n]?


How do I fix this issue and install linux-headers-virtual linux-image-virtual packages which have been kept back in Ubuntu Linux LTS version 12.04.2?
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