Change grub default boot option on Linux Ubuntu/Mint

Grub's default boot option is stored within a config file found on the partition where your Master Boot Record is located (if you had it installed previously, there may also be grub.cfg files on other partitions, but these won't effect boot sequence). Its direct path is /boot/grub/grub.cfg and it has to be opened as root, ... Read more

How to Manually Install New Cinnamon Themes (Linux Mint/Ubuntu)

To manually install new themes for cinnamon from the page provided by Cinnamon Settings, first backup the data of the original theme by opening a terminal and entering sudo cp -R /usr/share/cinnamon/theme /usr/share/cinnamon/theme_backup Then download and unpack another theme from http://cinnamon-spices.linuxmint.com/themes, save the files to some location - I will save them on my desktop. ... Read more

Send all outgoing email trough one IP address in postfix

When a server has more than one IP address, then postfix will use all IP addresses randomly to send out emails. This can cause your emails to be listed as SPAM on other servers because the sending IP does not match the reverse IP of the server hostname. The solution is to bind postfix to ... Read more

Change Default Application to Open Files (Linux Mint)

The default application is the one you open a file with on doubleclick. In some cases installed programs automatically turn themselves into the default application for files you were happy with, which you might want to change. To do that, rightclick a file of the chosen format and choose Open With... -> Other Application or ... Read more