Bye, bye region.tpl.php and block--system--main.tpl.php

/**
* Implements hook_page_alter().
*/
function mytheme_page_alter(&$page) {
// Remove all the region wrappers.
foreach (element_children($page) as $key => $region) {
if (!empty($page[$region]['#theme_wrappers'])) {
$page[$region]['#theme_wrappers'] = array_diff($page[$region]['#theme_wrappers'], array('region'));
}
}
// Remove the wrapper from the main content block.
if (!empty($page['content']['system_main'])) {

The code has been tested and works

The best way to add a column to an existing table in drupal

/*
* Implements hook_schema_alter().
*/
function mymodule_schema_alter(&$schema) {
$schema['tablename']['fields']['fieldname'] = array(
'type' => 'varchar',
'default' => null
);
}

/*
* Implements hook_install().
*/
function mymodule_install() {
if (!db_field_exists('tablename', 'fieldname')) {
$schema = drupal_get_schema('tablename');
db_add_field('tablename', 'fieldname', $schema['fields']['fieldname']);
}
}

The code has been tested and works

Reinstall virtualbox debian

Uninstall VirtualBox -> sudo apt-get purge "^virtualbox-.*"

Check carefully what will be removed before you confirm.

Update the software repositories -> sudo apt-get update

Clean up -> sudo apt-get autoremove | sudo apt-get autoclean | sudo apt-get clean

rm -r /etc/init.d/vboxdrv
rm -r /var/lib/update-rc.d/vboxdrv
apt-get install virtualbox virtualbox-dkms virtualbox-guest-utils virtualbox-guest-additions virtualbox-qt

Vagrant commands manage

A VirtualBox machine with the name 'vm_name' already exists. Please use another name or delete the machine with the existing name, and try again.

I listed current running virtual machines from the command line :

vboxmanage list vms

Result :

"vm_name" {8ba467b7-da96-4f68-9bf8-671dd6f0d007}

Then proceeded with the removal of the offending virtual machine :

VBoxManage unregistervm 8ba467b7-da96-4f68-9bf8-671dd6f0d007 --delete


vagrant up --provision

The code has been tested and works

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