MP3 support with Rhythmbox on Fedora 13

GStreamer is a multimedia framework used by many media players including rhythmbox, banshee, totem, listen, exaile and others. Due to legal issues support for various non-free formats , including mp3 files, aren't included with GStreamer by default. You can add support for mp3 and other formats by installing an add-on package from the third party repository rpm.livna.org     


1. Configured you to use the RPMFusion repositories first.


2. Install GStreamer plugins


    # yum install  gstreamer-plugins-bad gstreamer-plugins-ugly gstreamer-ffmpeg

Install Sun/Oracle Java JDK (Java Development Kit)/JRE (Java Runtime Environment) 6u21 on Fedora 14, Fedora 13, Fedora 12, CentOS 5.5, Red Hat (RHEL) 5.5 and Red Hat (RHEL) 6

origin post

 

1. Download Sun/Oracle Java JDK or JRE RPMs

Download Sun/Oracle Java JDK or JRE from here (current version is JDK 6 Update 21) http://www.oracle.com/technetwork/java/javase/downloads/index.html.
Note: Select rpm.bin package (example jdk-6u21-linux-i586-rpm.bin, jre-6u21-linux-i586-rpm.bin, jdk-6u21-linux-x64-rpm.bin or jre-6u21-linux-x64-rpm.bin).

2. Change to root user.

sudo -i
## OR ##
su -

3a. Run Sun/Oracle Java JDK binary

chmod +x /path/to/file/jdk-6u21-linux-*-rpm.bin
/path/to/binary/jdk-6u21-linux-*-rpm.bin
 
## OR ##
 
sh /path/to/binary/jdk-6u21-linux-*-rpm.bin

Note: Use full file name (without asterix) if you have both i586 and x64 versions downloaded.

3b. Run Sun/Oracle Java JRE binary

chmod +x /path/to/file/jre-6u21-linux-*-rpm.bin
/path/to/binary/jre-6u21-linux-*-rpm.bin
 
## OR ##
 
sh /path/to/binary/jre-6u21-linux-*-rpm.bin

Note: Use full file name (without asterix) if you have both i586 and x64 versions downloaded.

4. Install Sun/Oracle java, Sun/Oracle javaws, Sun/Oracle libjavaplugin.so (for Firefox/Mozilla) and Sun/Oracle javac with alternatives –install command

alternatives --install /usr/bin/java java /usr/java/jdk1.6.0_21/jre/bin/java 20000
alternatives --install /usr/bin/javaws javaws /usr/java/jdk1.6.0_21/jre/bin/javaws 20000
 
## Java Browser (Mozilla) Plugin 32-bit ##
alternatives --install /usr/lib/mozilla/plugins/libjavaplugin.so libjavaplugin.so 

    /usr/java/jdk1.6.0_21/jre/lib/i386/libnpjp2.so 20000
 
## Java Browser (Mozilla) Plugin 64-bit ##
alternatives --install /usr/lib/mozilla/plugins/libjavaplugin.so libjavaplugin.so 

    /usr/java/jdk1.6.0_21/jre/lib/amd64/libnpjp2.so 20000
 
## Install javac only if you installed JDK (Java Development Kit) package ##
alternatives --install /usr/bin/javac javac /usr/java/jdk1.6.0_21/bin/javac 20000

5. Check current java, javac, javaws and libjavaplugin.so versions

java -version
java version "1.6.0_21"
Java(TM) SE Runtime Environment (build 1.6.0_21-b06)
Java HotSpot(TM) Server VM (build 17.0-b16, mixed mode)
 
javac -version
javac 1.6.0_21
 
javaws
Java(TM) Web Start 1.6.0_21
[...]

Note: Check libjavaplugin.so with restarting Mozilla Firefox 
and writing about:plugins on address bar.

6. Swap between OpenJDK and Sun/Oracle JDK 

versions

alternatives --config java   # or javac or javaws or libjavaplugin.so
There are 4 programs which provide 'java'.
 
  Selection    Command
-----------------------------------------------
   1           /usr/lib/jvm/jre-1.6.0-openjdk/bin/java
   2           /usr/lib/jvm/jre-1.5.0-gcj/bin/java
*  3           /usr/java/jdk1.6.0_18/jre/bin/java
 + 4           /usr/java/jdk1.6.0_21/jre/bin/java
 
Enter to keep the current selection[+], or 

type selection number:

Note: java with [+] is currently on use

Post-Installation Setup

Add JAVA_HOME environment variable to /etc/profile file or $HOME/.bash_profile file

## export JAVA_HOME
export JAVA_HOME="/usr/java/jdk1.6.0_21"

Setup D-Link DWA-140(Ralink 2870USB) on Fedora 13

1. Installing the Kernel Source via yum.
    # yum install kernel-PAE-devel
       (I'm currently using kernel 2.6.34 PAE)

2. Get the driver from Ralink Driver Download.

3. Extract the driver in some place.

    # tar -jxvf 2010_0709_RT2870_Linux_STA_v2.4.0.1.tar.bz2 -C /tmp
    # cd /tmp/2010_0709_RT2870_Linux_STA_v2.4.0.1

4. Configure the driver which can be controlled by WPA_SUPPLICANT
    or NetworkManager.
 
    # vi os/linux/config.mk
       set 
               'HAS_WPA_SUPPLICANT=y' 
                and 
               'HAS_NATIVE_WPA_SUPPLICANT_SUPPORT=y'

5. build and install.

    # make
    # make install
       (it will copies a firmware(RT2870STA.dat) in the /etc/Wireless directory
          and a driver module(rt2870sta.ko) in /lib/modules/{kernel version}/kernel/
          drivers/net/wireless directory. Subsequently regenerates modules.dep and 
          map files.)

6.Configure NIC to auto-load at boot time.

    # echo "alias ra0 rt2870sta" >> /etc/modules.conf

    # echo "DEVICE='ra0' >> /etc/sysconfig/network-scripts/ifcfg-ra0
    # echo "ONBOOT='yes' >> /etc/sysconfig/network-scripts/ifcfg-ra0

7. Done.

Short Tip: Get UUID of Hard Disks

Origin Post

The Universally Unique Identifier can be used to identify a device independent form its mount point or device name. This is more and more important as many devices today support hot-plugging or are external anyway. Therefore it makes sometimes sense to access a device (for example in fstab) not by device name but by the UUID.

There are several ways to get the UUID. The first one uses the /dev/ directory. While you are on is you might want to check other by-* directories, I never knew of them.

$ ls -l /dev/disk/by-uuid

lrwxrwxrwx 1 root root 10 11. Okt 18:02 53cdad3b-4b01-4a6c-a099-be1cdf1acf6d -> ../../sda2

Another way to get the uuid by usage of the tool blkid:

$ blkid /dev/sda1

/dev/sda1: LABEL="/" UUID="ee7cf0a0-1922-401b-a1ae-6ec9261484c0" SEC_TYPE="ext2" TYPE="ext3"

There you also get the label and other information. Quite usefule.

Btw., if you wonder how “unique” this unique is, here a quote from Wikipedia:

1 trillion UUIDs would have to be created every nanosecond for 10 billion years to exhaust the number of UUIDs.

Pretty unique.

QEMU-KVM에서 ISO 대신 실제 CDROM 디바이스로 OS 설치하기

/usr/bin/qemu-kvm -hda /mnt/shared/vdisks/fedora13.img -boot d -cdrom /dev/cdrom -m 2048