jms@minimoose:~$ nagios
The program 'nagios' can be found in the following packages:
 * nagios-text
 * nagios-pgsql
 * nagios-mysql
Try: sudo apt-get install <selected package>
-bash: nagios: command not found


jms@minimoose:~$ kwrite
The program 'kwrite' is currently not installed.  You can install it by typing:
sudo apt-get install kate
-bash: kwrite: command not found