How to add existing user to an existing group? - Ask Ubuntu 8 On Ubuntu, since logging in as root is not enabled, users in the sudo group can elevate privileges for certain restricted commands Any restricted command must be prepended with sudo to elevate privilege sudo usermod -a -G group user will add the existing user user to a supplemental group named group The user's primary group will remain
How to resize partition via command line? - Ask Ubuntu I have Ubuntu installed on a VirtualBox VM How can I resize the Linux partition (not the virtual drive)? I already performed the VM resize using VBoxManage modifyhd to resize the virtual drive, b
command line - How to create a permanent alias? - Ask Ubuntu If you create an alias for example: alias cls="clear" It exists untill you kill terminall session When you start a new terminal window the alias doesn't exist any more How to create "permanent"
networking - How do I clear the DNS cache? - Ask Ubuntu For 11 10 and below Ubuntu doesn't cache dns records by default so unless you've installed a dns cache there isn't anything to clear DNS records are likely cached by your provider's DNS servers so if you want to check if the DNS changes you made were successful you can interrogate a DNS server from your domain hosting service with dig: