Jijo K Jose

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Archive for the ‘Linux’ Category

November 16th, 2012

Linux, OS

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How to Repair GRUB 2 When Ubuntu Won’t Boot

Using Terminal Method

If you have Ubuntu 12.04 installed, ensure you use a Ubuntu 12.04 live CD.

Open a terminal after booting into the live environment. Identify the partition Ubuntu is installed on using one of the following commands:

sudo fdisk -l

sudo blkid

Step 1

Here is the output of both commands. In the sudo fdisk -l command, the Ubuntu partition is identified by the word Linux in the System column.

Apache 2 Web Server in Linux – Start, Stop and Restart

Start Apache 2 Web Server

To start Apache 2 web server, enter:

/etc/init.d/apache2 start

or

sudo /etc/init.d/apache2 start

Restart Apache 2 Web Server

Restart Apache 2 web server, enter:

/etc/init.d/apache2 restart

or

sudo /etc/init.d/apache2 restart

Remove Old Kernels from Ubuntu 12.10 with Ubuntu Tweak

If you’ve been using and updating Ubuntu for sometime now, you may have old kernels installed on your system that are not useful anymore.

Using Ubuntu Tweak, this brief tutorial is going to show you how to remove those old kernels from Ubuntu 12.04 / 12.10 easily with few clicks. If these unused kernels are not removed, they may just end of using valuable space on your system’s disks.

Step 1

To get started, press Ctrl + Alt + T on your keyboard to open the terminal. When it opens, run the commands below to add Ubuntu Tweak PPA

sudo add-apt-repository ppa:tualatrix/ppa