Apache Redirect Loop

I was trying to use mod_alias to redirect the root of my website to a subfolder. However, the Redirect directive was just giving an redirect loop.

Finally found the solution at this stackoverflow thread.

Instead of using Redirect, it is necessary to use RedirectMatch with a regular expression for the /

RedirectMatch 301 ^/$ http://example.com/stuff

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Samsung NC110 Screen Brightness in Ubuntu 13.04

After upgrading the Samsung NC110 netbook to Ubuntu 13.04, the screen brightness buttons stopped working. Googling the terms “ubuntu 13.04 samsung nc110 brightness” led to an askubuntu.com thread with the solution.

Here are the steps.

Backup the grub config file
sudo cp /etc/default/grub /etc/default/grub.bkup

Edit the file
sudo vim /etc/default/grub
add the following to the line GRUB_CMDLINE_LINUX=".... acpiosi=Linux acpi_backlight=vendor"

The ellipsis (….) refers to what was already there and is not meant to be entered literally into the file.

Run grub-mkconfig
sudo grub-mkconfig -o /boot/grub/grub.cfg