[Howto] use videojs with HLS (videojs-contrib-hls.js)
checkout the live-example from http://jsbin.com/liwecukasi/edit?html,output The live-example code is: <!DOCTYPE html> <html> <head> <meta charset=utf-8 /> <title>videojs-contrib-hls embed</title> <link href=”https://cdnjs.cloudflare.com/ajax/libs/video.js/5.10.2/alt/video-js-cdn.css” rel=”stylesheet”> <script src=”https://cdnjs.cloudflare.com/ajax/libs/video.js/5.10.2/video.js”></script> <script src=”https://cdnjs.cloudflare.com/ajax/libs/videojs-contrib-hls/3.0.2/videojs-contrib-hls.js”></script> </head> <body> <h1>Video.js Example Embed</h1> <video id=”my_video_1″ class=”video-js vjs-default-skin” controls preload=”auto” width=”640″ height=”268″ data-setup='{}’> <source … Continued
[Howto] debug Horde Groupware
If you receive this webserver-error while querying the horde website [core:notice] [pid 18909:tid 34391285760] AH00052: child pid 18911 exit signal Bus error (10) it is an error in the processing of the horde *.php files, which often cause the killing … Continued
[Howto] modify Midnight Commander keymap options (shortcuts)
the default keymap shortcuts in mc-4.8.18 are stored in the file ~/.config/mc/mc.keymap: 1 [main] 2 ChangePanel = tab 3 Help = f1 4 UserMenu = f2 5 View = f3 6 # ViewFile = 7 Edit = f4 8 # … Continued
[Howto] disable encrypted typo3 backend login
Typo3 v7.6.14 edit the file typo3conf/LocalConfiguration.php and change the security level from rsa (default) to normal loginSecurityLevel’ = ‘normal’
[Howto] resolve very slow aptitude ‘package list’-updates
problem: the update-process for aptitudes “reading package list” takes a very long time. reason: the $LANGUAGE-variable has a wrong value. solution: set a correct value in bash via export LANGUAGE=en and afterwards restart aptitude.
[Howto] create PostgreSQL database with UTF-8 encoding
postgreSQL v9.6 CREATE DATABASE testdb ENCODING ‘utf8’ LC_COLLATE ‘de_DE.UTF-8’ LC_CTYPE ‘de_DE.UTF-8’ TEMPLATE template0;
[Howto] resolve Virtualbox error message ‘the device helper structure has changed’
if you’ve upgraded virtualbox and afterwards you can’t start the vm’s, because of the error ‘the device helper structure has changed’, you must reinstall/update your virtualbox extension pack. Run as root the following command: vboxmanage extpack install –replace ‘new-extpack-file’
[Howto] resolve error message Virtualbox ‘Kernel driver not installed (rc=-1908)’
Error message: Kernel driver not installed (rc=-1908) The VirtualBox Linux kernel driver (vboxdrv) is either not loaded or there is a permission problem with /dev/vboxdrv. Please reinstall virtualbox-dkms package and load the kernel module by executing ‘modprobe vboxdrv’ as root. … Continued
[Howto] bond network cards in Debian Linux (LACP)
If you want to add a bonded interface in Debian Linux, you don’t need the package ifenslave anymore. You can create/modify/delete the bonded interface completly through sysfs. at first load the required bonding-driver into kernel: modprobe ‘bonding’ create a … Continued
[Howto] resize (extend) a Virtualbox vdi image
Use the following Virtualbox command in your shell: (you must specifiy the target size in MB, for example 200 GB = 200000) VBoxManage modifymedium image.vdi –resize 200000 tested with: Virtualbox Version 5.0.24_Debian