Ubuntu: Completely restart wireless network

driver=`sudo ethtool -i wlan0 | grep driver | cut -d ' ' -f 2`;sudo modprobe -r $driver;sudo modprobe $driver;

Howto: Enlarge disk in CentOS under VMWare

According to this post: http://smartiecomputers.com/blog/?p=117

1. Power off the VM

2. Remove all snapshots

3. Expand the disk

4. Power on VM

5. Create new LVM partition using fdisk with type: 8e (Linux LVM)

6. Create physical volume: pvcreate /dev/sda3

7. Extend VolGroup: vgextend VolGroup00 /dev/sda3

8. Show the free space we got: vgdisplay

9. Grow the VolGroup: lvextend -L+nG /dev/VolGroup00/LogVol00

10. Resize the file system online: resize2fs /dev/VolGroup00/LogVol00

Done!

Howto: Changing iso image in Xen

1. xm block-list "name of the domain"
Vdev BE handle state evt-ch ring-ref BE-path
768 0 0 1 -1 -1 /local/domain/0/backend/vbd/1/768
5632 0 0 1 -1 -1 /local/domain/0/backend/vbd/1/5632
2. sudo xenstore-write /local/domain/0/backend/vbd/1/5632/params /path/to/your/iso/file

3. Done