Friday, May 30, 2014

Virtualbox error - Kernel driver not installed (rc=-1908) Make sure the kernel module has been loaded successfully.

Virtualbox stops working after MacOS upgrade with the following error message,

Kernel driver not installed (rc=-1908)

Make sure the kernel module has been loaded successfully.

The following command will fix the issue.

# sudo /Library/Application\ Support/VirtualBox/LaunchDaemons/VirtualBoxStartup.sh restart
/Applications/VirtualBox.app/Contents/MacOS/VBoxAutostart => /Applications/VirtualBox.app/Contents/MacOS/VBoxAutostart-amd64
/Applications/VirtualBox.app/Contents/MacOS/VBoxBalloonCtrl => /Applications/VirtualBox.app/Contents/MacOS/VBoxBalloonCtrl-amd64
/Applications/VirtualBox.app/Contents/MacOS/VBoxDD2GC.gc => /Applications/VirtualBox.app/Contents/MacOS/VBoxDD2GC.gc-amd64
/Applications/VirtualBox.app/Contents/MacOS/VBoxDDGC.gc => /Applications/VirtualBox.app/Contents/MacOS/VBoxDDGC.gc-amd64
/Applications/VirtualBox.app/Contents/MacOS/VBoxExtPackHelperApp => /Applications/VirtualBox.app/Contents/MacOS/VBoxExtPackHelperApp-amd64
/Applications/VirtualBox.app/Contents/MacOS/VBoxHeadless => /Applications/VirtualBox.app/Contents/MacOS/VBoxHeadless-amd64
/Applications/VirtualBox.app/Contents/MacOS/VBoxManage => /Applications/VirtualBox.app/Contents/MacOS/VBoxManage-amd64
/Applications/VirtualBox.app/Contents/MacOS/VBoxNetAdpCtl => /Applications/VirtualBox.app/Contents/MacOS/VBoxNetAdpCtl-amd64
/Applications/VirtualBox.app/Contents/MacOS/VBoxNetDHCP => /Applications/VirtualBox.app/Contents/MacOS/VBoxNetDHCP-amd64
/Applications/VirtualBox.app/Contents/MacOS/VBoxNetNAT => /Applications/VirtualBox.app/Contents/MacOS/VBoxNetNAT-amd64
/Applications/VirtualBox.app/Contents/MacOS/VBoxSVC => /Applications/VirtualBox.app/Contents/MacOS/VBoxSVC-amd64
/Applications/VirtualBox.app/Contents/MacOS/VBoxXPCOMIPCD => /Applications/VirtualBox.app/Contents/MacOS/VBoxXPCOMIPCD-amd64
/Applications/VirtualBox.app/Contents/MacOS/VMMGC.gc => /Applications/VirtualBox.app/Contents/MacOS/VMMGC.gc-amd64
/Applications/VirtualBox.app/Contents/MacOS/VirtualBox => /Applications/VirtualBox.app/Contents/MacOS/VirtualBox-amd64
/Applications/VirtualBox.app/Contents/MacOS/VirtualBoxVM => /Applications/VirtualBox.app/Contents/MacOS/VirtualBoxVM-amd64
/Applications/VirtualBox.app/Contents/MacOS/vboxwebsrv => /Applications/VirtualBox.app/Contents/MacOS/vboxwebsrv-amd64
Loading VBoxDrv.kext
Loading VBoxUSB.kext
Loading VBoxNetFlt.kext

Loading VBoxNetAdp.kext

Tuesday, May 20, 2014

Get a list of all packages installed on Ubuntu

The following command will provide a list of all packages installed on Ubuntu.

dpkg --get-selections

Get a list of crontabs for all users on a system

The following command will print a list of crontabs for all users of the system.

for user in $(cut -f1 -d: /etc/passwd); do echo $user; crontab -u $user -l; done

Friday, May 16, 2014

Find largest files in a directory and display in human readable form

find . -type f -exec du -a --human-readable {} + | sort --human-numeric-sort -r | head