I am currently running Ubuntu Server 9.10 and having trouble with apt-get. I have tried to run the following commands and none seem to work:
sudo apt-get install sun-java6-jdk
sudo apt-get install flex
sudo apt-get install bison
Every time I get a package not found error back. I know they are all valid packages because I have successfully installed them via apt-get in the past couple of days on other linux systems, but for some reason apt-get is not working on my machine.
At this point I know the networking is working properly. I am able to ping the outside world, including us.ubuntu.com and security.ubuntu.com, and ssh to and from my machine.
I'm fairly new to linux, so any help anybody can offer would be greatly appropriated in resolving my apt-get issue.