How to set up etags with emacs

1. Create tags table:
1. Navigate to the source code directory
2. Run the command find . -name "*.[chCH]" -print | etags - (assuming that etags is already installed). This will create a TAGS file in the directory from which the aforementioned command is run
3. In emacs do M-x visit-tags-table and navigate to the directory where the aforementioned command was run. This will load the TAGS table

This summarizes the state of affairs in the past 2 weeks

Ubuntu: Updating repostiories

# make a backup of the repository
sudo cp /etc/apt/sources.list cp /etc/apt/sources.list.bkup

# manually edit the sources.list and add the repositories
sudo vi /etc/apt/sources.list

# update the repository information
sudo apt-get update