Peta Room

To  find the total size of files :  $ ls -l | grep ^- | awk '{som+=$5}END{print "Total files size  : ", som}'

Command to check RAM in AIX UNIX The bootinfo command uses the device configuration databases in information searches. Just type the following command as the root user: bootinfo -r It will displays amount of real memory in kilobytes. bootinfo command may not be available in latest AIX UNIX version, try following command: $ lsattr -El sys0 | grep realmem svmon command - Captures and analyzes a snapshot of virtual memory The svmon command displays information about the current state of memory. The displayed information does not constitute a true snapshot of memory, because the svmon command runs at user level with interrupts enabled. To print out global statistics, type: # svmon -G Read the man page of svmon for more information.

To reduce the size of a logical volume, use the lvreduce command. If the logical volume contains a file system, be sure to umount it and reduce the file system first. Umount the file system # umount   /file_system_name Check if all data structures of you logical volume are cleaned. # fsck -f /dev/vgname/lvname   Resize the file system # resize -p /dev/vgname/lvname 500M Reduce the logical volume  # lvreduce -L 500M /dev/vgname/lvname  Checking   df -h /file_system_name

To increase the size of a Logical Volume, use the   lvextend command. After extending the Logical volume, you will need to increase the size of associated file system , # lvextend -L 1500M /dev/vgname/lvname After it is necessary to increase the file system size to match. # resize2fs -p /dev/vgname/lvname -p option show the progress of the operation.

To add SCSI disks to your RHEL6 system without rebooting your machine, you have to rescan the newly disks using the following commands. If you are running your OS  in a Production environment, extra disks can be added or removed without a need of rebooting the Linux machine. How to add a new disk : Once you have present your new disk or Lun to the RHEL OS run : # echo "- - -" >/sys/class/scsi_host/host#/scan The "- - -" is used for the bus channel, Target Id and Lun. Check the /var/log/messages  to find the new device name or by checking the /proc/partitions file. # tail -f /var/log/messages # cat /proc/partitions If your new disk name  is /dev/sdb ,   get more information about it by running # fdisk -l /dev/sdb

I was asking my self if a samrtphone equiped by 3D technology could be the big challenge for the mobile industry for this decade. I remember, when i have used the LG Optimus 3D for the first time, i was very impressed. I could not imagine that you are able to watch 3D films directely in your mobile without needing 3D glasses. I have the chance to study more the technology and to see how LG invent a new way to show 3D images on the LCD panel. What was impressing my, rather than the ingenious way of adding a Barrier layer in front of the LCD screen to delivere a seperate image to each eye, the many "3D" services or options that a 3D phone provide regarding a  normal use. Using Optimus 3D phone you can : Watch 3D movies. Play 3D games. Record 3D videos. Share 3D contents(3D Youtube, HDMI (TV)). Take 3D pictures. 3D apps. There are many ways to mesure innovation, but perhaps the most elemental yardstick, at least where technology is concerned, revolves around the j...

It was a great pleasure for me to participate in the Tunandroid's first birthday event. I have been a member in the community since last year, and I was thinking how to give support for the tunsian's Android fans especially after the Tunisian revolution.  Tuanandroid is the official Android community for tunisan developers. It gives support for students and developers to improve their knowledge on the Android's platform. Tunandroid.com  contains more information about the community's activities and helps Tunisan android geeks to be updated with the last news about Android technologies and mobile vendors. During this event, the big  South korea firme, LG, was presented to give support to Tunisian Android developers. Christoph Marschall,Technical Manager of LG Europe Lab & Me from Tunisia Lab have the pleasure to  present the Real3D technology and how to start developing 3D applications using the  R...