This command will update a single package upon request. This would be very useful if you want to update only a certain package. dpkg -s 2>/dev/null | grep -q Status.*installed && sudo apt-get install I found this tip here: http://askubuntu.com/questions/44122/how-to-upgrade-a-single-package-using-apt-get. This would be very useful to someone using Ubuntu or Debian. Here is an example. …