FFmpeg has been removed from Ubuntu 14.04 and was replaced by Libav. This decision has been reversed so that FFmpeg is available now in Ubuntu 15.04 again, but there is still no official package for 14.04. In this tutorial, I will show you how to install FFmpeg from mc3man ppa. Add the mc3man ppa:
sudo add-apt-repository ppa:mc3man/trusty-media
And confirm the following message by pressing <enter>:
Also note that with apt-get a sudo apt-get dist-upgrade is needed for initial setup & with some package upgrades
More info: https://launchpad.net/~mc3man/+archive/ubuntu/trusty-media
Press [ENTER] to continue or ctrl-c to cancel adding it
Update the package list.
sudo apt-get update
sudo apt-get dist-upgrade
Now FFmpeg is available to be installed with apt:
sudo apt-get install ffmpeg
Follow these steps to disable IPv6 on CentOS. Edit the /etc/sysctl.conf file, I will use the nano editor here:
And add the following line at the end of the file:
net.ipv6.conf.all.disable_ipv6 = 1
to load the new settings.
The next step is to edit the network card configuration file (/etc/sysconfig/network-scripts/ifcfg-eth*) and add or edit the setting IPV6INIT so that it is set to "no".
Now edit the file /etc/sysconfig/network:
And set the NETWORKING_IPV6 option to "no":
Then restart the server.
Examples on how to add Linux users to groups with simple shell commands for CentOS, Debian and Ubuntu. Continue reading Linux: Add user to Group
You might have to remove an existing GPT partition table from a hard disk when you install another OS like Windows which can't cope with GPT or like in my case, when you want to add an HDD into a RAID were the other disks use the traditional MBR partition table.
Continue reading How to remove a GPT partition table from HDD
High page speed and short page load times of your website are essential for good search engine rankings today. In this FAQ, I will show you how to enable caching of graphic and CSS files in apache on Ubuntu and Debian.
The first step is to enable the expires module in apache:
a2enmod headers expires
This module allows the apache web server to set HTTP headers, in this case, to set the modification header for static assets like image and CSS files that don't change often.
Add the following config snippet inside the vhost file of the web site or at the end of the file /etc/apache2/apache2.conf to enable it globally.
Header set Cache-Control "max-age=3024000, public"
Finally reload apache to apply the configuration change.
service apache2 reload
On ISPConfig 3 servers, the snippet can be added in the "Apache Directives" field of the website instead. There is no apache reload required as ISPConfig takes care about that.
Today I will outline the options to kill an unresponsive OpenVZ container.
Continue reading How to kill an OpenVZ Container?
Sometimes you might want to download an entire website e.g. to archive it or read it offline. This tutorial will show you which application can be used on Windows and Linux.
Continue reading How can I download an entire website?
The bash history is a log file that contains all commands that the user executed on the Linux shell. When you use the "arrow up" key on our keyboard, then Bash will look up the previous command from that file and display it on the screen, ready to be executed again.
Continue reading How to clear Bash history on Linux?
OpenVZ is a Linux based Kernel virtualization technology developed by SWSoft for its commercial product Virtuozzo. The modified Linux Kernel and the system utilities are released under an OpenSource license. Vzdump is a shell based backup program for OpenVZ virtual machines. It is made for containers that use the traditional "simfs" filesystem, it can not be used for containers with "ploop" filesystem.
Continue reading How to Backup OpenVZ Containers with vzdump on CentOS 6
Sometimes it is necessary to limit the download rate of the wget command, e.g. when you are downloading a large file over a slow internet connection. The parameter to apply a download speed limit is the --limit-rate option. This setting is followed by the rate limit plus "k" for Kbit or "m" for MBit.
wget --limit-rate 128k http://downloadserver.tld/bigfile.zip