I recently installed Ubuntu 13.10. in the process of editing bash.bashrc file something went wrong and all of a sudden all i'm getting when I open my terminal is a blank screen. No directory names or $. So I can't execute any commands to update, install, fix or anything. All the help out I come across assume I can use the command line. . Anyone knows how to fix this? or how maybe how I can recover the default bashrc file (without using the command line)? Is my only option uninstalling and reinstalling Ubuntu? I don't even know how to do that without the command line.
rajagenupula's answer would do the job... If you could get to a terminal. The problem is your default shell is bash (even in a TTY) so you're going to struggle to run those commands.
To get a working console, I'd press Alt+F2 and run:
xterm -e sh
That should drop you into a nasty super-basic shell. And from there you can fix/rescue/etc your
.bashrc using nano (to edit) or rajagenupula's suggested commands, which should also work (you could skip the source and just go back to your traditional terminal.
If you don't have graphical access, you could drop into recovery mode (using Grub at boot), run
mount -o remount,rw / and then fix/replace the file.