I am receiving a message saying I have duplicate sources but I can't seem to find a duplicate of the line described, any ideas?
5407
How to fix "W: Duplicate sources.list entry"?
26798
The StackExchange™ MultiCollider SuperDropdown™ says I've got replies, but I've already viewed those
9245
How can I identify duplicate image files?
34058
How to debug the mysterious "duplicate value found:  duplicates value on record with id: " error
90094
Duplicate meta description
61584
When is a duplicate question not a duplicate?
46658
Why are files duplicated in my home folder and desktop?
101911
I do not get notified when the system adds a canned "possible duplicated" comment
33449
Why does Stack Overflow allow duplicate display names?
16219
New flagging dialog has a duplicate for duplicate
3993
I found a game with the same name as mine! What should I do?
135386
Should bug-report/feature-request *questions* that duplicate Grab-bag *answers* be closed as duplicates?
84862
Users are calling me a plagiarist. What do I do?
110889
What is the most rampant duplicate on Stack Exchange sites?
249
How do I fix this "E: Type '*' is not known on line * in source list ..." update error?
156012
Same question listed twice in reputation list
12054
How do I deal with "unauthenticated sources" errors in the Software Center?