lock-unlock

[Bob Hemus]

Help fellas,I'm trying to add packages from synaptic package manager and apt-get and get the following errors.  You can see what I tried to do to fix it, but...
bob at bob-System-Product-Name:~$ sudo apt-get update[sudo] password for bob: E: Could not get lock /var/lib/apt/lists/lock - open (11: Resource temporarily unavailable)E: Unable to lock directory /var/lib/apt/lists/bob at bob-System-Product-Name:~$ sudo unlock /var/lib/apt/lists/locksudo: unlock: command not foundbob at bob-System-Product-Name:~$ sudo open /var/lib/apt/lists/lockbob at bob-System-Product-Name:~$ sudo apt-get updateE: Could not get lock /var/lib/apt/lists/lock - open (11: Resource temporarily unavailable)E: Unable to lock directory /var/lib/apt/lists/bob at bob-System-Product-Name:~$ sudo apt-get open /var/lib/apt/lists/lock update lock /var/lib/apt/lists/lockE: Invalid operation openbob at bob-System-Product-Name:~$ 
What have I done wrong and how do I fix it?Been a while since I've needed your help.  Had bigger problems.  My wife, Florine, died of a cerebral hemorrhage last June 30th.  Ended up in the hospital with a nervous-breakdown.  My son&his son flew to Medford, OR picked up a rental van loaded it and we left Friday Sept. 17 after a dialysis treatment.  Arrived in Kilgore, TX, Monday Sept. 20 for my next scheduled dialysis.  I'm ready to go home now.  
Anyway, in advance, thanks for the help.Bob
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