Linux File Permissions, chmod, & umask - Tutonics. Understand how Ubuntu/Linux file permissions and special mode bits work.
Learn how to change these permissions using the chmod command. Find out how default permissions for new files are configured via a user's umask value. Contents Linux File Permissions In Ubuntu/Linux everything is a file, so everything will have permissions also. User - the user that ownes the filegroup - users in the files groupother - every other user There are also three other components when it comes to file mode bits, namely the setuid bit, the setgid bit, and the sticky bit.
How "Read", "Write", And "Execute" Permissions Are Represented File permissions are identified through file mode bits. -rwxrwxrwx The repeated rwx sequences represent the notion of read (r), write (w), and execute (x) permissions for user, group, and other (in that order). File Types.
Gentoo. Ubuntu. Bash. Bash - How do I find out whether a port is available on Ubuntu 8.04. Wireless - How to connect and disconnect to a network manually in terminal. Serviio media server. View topic - Cant play mkv files. Convert MKV to MP4 in Ubuntu. You have videos using the MKV container but need them to use the MP4 container to, for example, stream from your Ubuntu computer to a Samsung tablet using DLNA (see my notes on streaming using minidlna).
How to do the conversion in Ubuntu? Its rather easy, assuming the MKV contains H.264 encoded video. A recommended approach is to use Handbrake. Has a simple to use GUI, and even a command line interface. But lets try something different ... Another approach is to use mkvtomp4. First, install the necessary software: MP4Box (in gpac package), mkvextract (in mkvtoolnix package) and FFMPEG. $ sudo apt-get install gpac mkvtoolnix ffmpeg Remember that MKV and MP4 are just container formats. The steps are to extract the video and audio tracks from the MKV container, transcode the tracks (if necessary) into H.264 and AAC, and then combine the resulting tracks putting them in a MP4 container.
From the above example, note there are five tracks: I want to extract tracks 1 and 2. HandBrake Releases : John Stebbins. Howto:linux:install - Serviio Wiki. Howto:linux:install:ubuntu12-04 - Serviio Wiki. Prerequisites For Ubuntu 12.05 , the ffmpeg should be installed from the terminal.
Moreover, additional codecs and libraries should be installed to ensure flawless operation of Serviio. Recommend you do the following using Terminal: Install missing codecs (including latest Lame): sudo apt-get install ubuntu-restricted-extras Install DVD playback libraries: sudo apt-get install libdvdread4 sudo wget --output-document=/etc/apt/sources.list.d/medibuntu.list -cs).list sudo apt-get --quiet update sudo apt-get --yes --quiet --allow-unauthenticated install medibuntu-keyring sudo apt-get --quiet update sudo apt-get install libdvdcss2 Install ffmpeg: sudo apt-get install libxine1-ffmpeg gxine mencoder mpeg2dec vorbis-tools id3v2 mpg321 mpg123 libflac++6 ffmpeg totem-mozilla icedax tagtool easytag id3tool lame nautilus-script-audio-convert libmad0 libjpeg-progs flac faac faad sox ffmpeg2theora libmpeg2-4 uudeview flac libmpeg3-1 mpeg3-utils mpegdemux liba52-0.7.4-dev libquicktime2 Install Gstreamer:
LCD Brightness. Regular ACPI This worked for my X61: Once your brightness keys work, you can set the brightness by writing to the procfs: # echo 100 > /proc/acpi/video/VID1/LCD0/brightness using a script and acpid events.
However this may lead to a bug (screen flickers) described on the Debian mailing list [[1]] . $ $xrandr --output LVDS --set BACKLIGHT_CONTROL native For my X61, these following scripts from this japanese site helped: % cat /etc/acpi/video_brightnessdown.sh #! % cat /etc/acpi/video_brightnessup.sh #! 2.6.26 kernel.