#964
[Linux] CentOS install VirtualBox Guest Additions
http://toolkt.com/site/virtualbox-shared-folders-with-centos-server-guest/
yum update yum groupinstall "Development Tools" yum install kernel-devel gcc xorg-x11* echo export KERN_DIR=/usr/src/kernels/`uname -r`/ >> ~/.bashrc #ll /usr/src/kernels/2. #export KERN_DIR=/usr/src/kernels/2. sudo mkdir /media/cdrom sudo mount /dev/cdrom /media/cdrom sudo /media/cdrom/VBoxLinuxAdditions.run
[Domoticz] Lua : ping host [Unix] Install Oracle 11g CLI
https://superuser.com/questions/499059/unable-to-install-virtualbox-specify-kern-dir-directory-installing-vir
http://toolkt.com/site/virtualbox-shared-folders-with-centos-server-guest/
https://gist.github.com/larsar/1687725
to share access to another user :
if VERR_PDM_MEDIA_LOCKED :
In the VM Manager under Settings->Storage, under Controller: Right-click on VBoxGuestAdditions, and select “Remove Attachment.” There will be a confirmation box: click “remove.”
Click the “+” icon next to “Controller,” to add new optical drive. A dialog box will open. Choose “Leave Empty-> Okay”
Open the VM and select Devices->Insert Guest Additions. It should install now.
Power off the VM (not the VM Manager) and restart the VM. GuestAdditions should now be working.
https://maheshhika.com/2012/09/28/virtual-box-verr_pdm_media_locked/