$ sudo apt-get update && sudo apt-get dist-upgrade
Ign http://archive.canonical.com trusty InRelease
Ign http://extras.ubuntu.com trusty InRelease                                  
Hit http://archive.canonical.com trusty Release.gpg                            
Get:1 http://extras.ubuntu.com trusty Release.gpg [72 B]                       
Hit http://archive.canonical.com trusty Release                                
Hit http://extras.ubuntu.com trusty Release                                    
Ign http://extras.ubuntu.com trusty Release                                    
Hit http://archive.canonical.com trusty/partner Sources                        
Ign http://security.ubuntu.com trusty-security InRelease             
Ign http://extras.ubuntu.com trusty/main Sources/DiffIndex                     
Ign http://us.archive.ubuntu.com trusty InRelease                              
Hit http://archive.canonical.com trusty/partner amd64 Packages                 
Ign http://extras.ubuntu.com trusty/main amd64 Packages/DiffIndex              
Hit http://archive.canonical.com trusty/partner i386 Packages                  
Ign http://extras.ubuntu.com trusty/main i386 Packages/DiffIndex               
Hit http://security.ubuntu.com trusty-security Release.gpg                     
Ign http://us.archive.ubuntu.com trusty-updates InRelease                      
Hit http://extras.ubuntu.com trusty/main Sources                               
Hit http://security.ubuntu.com trusty-security Release                         
Ign http://us.archive.ubuntu.com trusty-backports InRelease                    
Hit http://extras.ubuntu.com trusty/main amd64 Packages                        
Ign http://archive.canonical.com trusty/partner Translation-en                 
Hit http://extras.ubuntu.com trusty/main i386 Packages                         
Hit http://us.archive.ubuntu.com trusty Release.gpg                   
Hit http://security.ubuntu.com trusty-security/main Sources           
Get:2 http://us.archive.ubuntu.com trusty-updates Release.gpg [933 B]          
Hit http://us.archive.ubuntu.com trusty-backports Release.gpg                  
Ign http://extras.ubuntu.com trusty/main Translation-en_US            
Ign http://extras.ubuntu.com trusty/main Translation-en
Hit http://us.archive.ubuntu.com trusty Release 
Hit http://security.ubuntu.com trusty-security/restricted Sources      
Get:3 http://us.archive.ubuntu.com trusty-updates Release [59.7 kB]
Hit http://security.ubuntu.com trusty-security/universe Sources
Hit http://security.ubuntu.com trusty-security/multiverse Sources
Hit http://security.ubuntu.com trusty-security/main amd64 Packages
Hit http://security.ubuntu.com trusty-security/restricted amd64 Packages   
Hit http://security.ubuntu.com trusty-security/universe amd64 Packages  
Hit http://security.ubuntu.com trusty-security/multiverse amd64 Packages   
Hit http://security.ubuntu.com trusty-security/main i386 Packages           
Hit http://security.ubuntu.com trusty-security/restricted i386 Packages        
Hit http://us.archive.ubuntu.com trusty-backports Release      
Hit http://security.ubuntu.com trusty-security/universe i386 Packages  
Hit http://us.archive.ubuntu.com trusty/main Sources              
Hit http://security.ubuntu.com trusty-security/multiverse i386 Packages
Hit http://us.archive.ubuntu.com trusty/restricted Sources         
Hit http://security.ubuntu.com trusty-security/main Translation-en
Hit http://us.archive.ubuntu.com trusty/universe Sources                
Hit http://us.archive.ubuntu.com trusty/multiverse Sources              
Hit http://us.archive.ubuntu.com trusty/main amd64 Packages       
Hit http://us.archive.ubuntu.com trusty/restricted amd64 Packages
Hit http://security.ubuntu.com trusty-security/multiverse Translation-en
Hit http://us.archive.ubuntu.com trusty/universe amd64 Packages     
Hit http://security.ubuntu.com trusty-security/restricted Translation-en 
Hit http://us.archive.ubuntu.com trusty/multiverse amd64 Packages  
Hit http://us.archive.ubuntu.com trusty/main i386 Packages
Hit http://security.ubuntu.com trusty-security/universe Translation-en
Hit http://us.archive.ubuntu.com trusty/restricted i386 Packages
Hit http://us.archive.ubuntu.com trusty/universe i386 Packages
Hit http://us.archive.ubuntu.com trusty/multiverse i386 Packages
Hit http://us.archive.ubuntu.com trusty/main Translation-en
Hit http://us.archive.ubuntu.com trusty/multiverse Translation-en
Hit http://us.archive.ubuntu.com trusty/restricted Translation-en
Hit http://us.archive.ubuntu.com trusty/universe Translation-en                
Get:4 http://us.archive.ubuntu.com trusty-updates/main Sources [134 kB]        
Get:5 http://us.archive.ubuntu.com trusty-updates/restricted Sources [1,408 B] 
Get:6 http://us.archive.ubuntu.com trusty-updates/universe Sources [89.3 kB]   
Get:7 http://us.archive.ubuntu.com trusty-updates/multiverse Sources [3,517 B] 
Get:8 http://us.archive.ubuntu.com trusty-updates/main amd64 Packages [352 kB] 
Get:9 http://us.archive.ubuntu.com trusty-updates/restricted amd64 Packages [5,820 B]
Get:10 http://us.archive.ubuntu.com trusty-updates/universe amd64 Packages [216 kB]
Get:11 http://us.archive.ubuntu.com trusty-updates/multiverse amd64 Packages [9,365 B]
Get:12 http://us.archive.ubuntu.com trusty-updates/main i386 Packages [346 kB] 
Get:13 http://us.archive.ubuntu.com trusty-updates/restricted i386 Packages [5,820 B]
Get:14 http://us.archive.ubuntu.com trusty-updates/universe i386 Packages [216 kB]
Get:15 http://us.archive.ubuntu.com trusty-updates/multiverse i386 Packages [9,546 B]
Hit http://us.archive.ubuntu.com trusty-updates/main Translation-en            
Hit http://us.archive.ubuntu.com trusty-updates/multiverse Translation-en      
Hit http://us.archive.ubuntu.com trusty-updates/restricted Translation-en      
Hit http://us.archive.ubuntu.com trusty-updates/universe Translation-en        
Hit http://us.archive.ubuntu.com trusty-backports/main Sources                 
Hit http://us.archive.ubuntu.com trusty-backports/restricted Sources           
Hit http://us.archive.ubuntu.com trusty-backports/universe Sources             
Hit http://us.archive.ubuntu.com trusty-backports/multiverse Sources           
Hit http://us.archive.ubuntu.com trusty-backports/main amd64 Packages          
Hit http://us.archive.ubuntu.com trusty-backports/restricted amd64 Packages    
Hit http://us.archive.ubuntu.com trusty-backports/universe amd64 Packages      
Hit http://us.archive.ubuntu.com trusty-backports/multiverse amd64 Packages    
Hit http://us.archive.ubuntu.com trusty-backports/main i386 Packages           
Hit http://us.archive.ubuntu.com trusty-backports/restricted i386 Packages     
Hit http://us.archive.ubuntu.com trusty-backports/universe i386 Packages       
Hit http://us.archive.ubuntu.com trusty-backports/multiverse i386 Packages     
Hit http://us.archive.ubuntu.com trusty-backports/main Translation-en          
Hit http://us.archive.ubuntu.com trusty-backports/multiverse Translation-en    
Hit http://us.archive.ubuntu.com trusty-backports/restricted Translation-en    
Hit http://us.archive.ubuntu.com trusty-backports/universe Translation-en      
Ign http://us.archive.ubuntu.com trusty/main Translation-en_US                 
Ign http://us.archive.ubuntu.com trusty/multiverse Translation-en_US           
Ign http://us.archive.ubuntu.com trusty/restricted Translation-en_US           
Ign http://us.archive.ubuntu.com trusty/universe Translation-en_US             
Fetched 1,449 kB in 25s (58.0 kB/s)                                            
Reading package lists... Done
W: GPG error: http://extras.ubuntu.com trusty Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 16126D3A3E5C1192
Reading package lists... Done
Building dependency tree       
Reading state information... Done
Calculating upgrade... Done
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
$