Ubuntu Tips
From JoeHacker
General Changes
dash is the default shell linked to /bin/sh. This can cause a number of problems with some scripts. To change /bin/sh back to bash use the following command.
dpkg-reconfigure dash
Admin Commands
allow a user to sudo
sudo adduser <username> sudo adduser <username> admin
Apache
remake ssl snakeoil cert
sudo make-ssl-cert generate-default-snakeoil --force-overwrite
Disable default site
a2dissite default
Enable ldap
a2enmod authnz_ldap