I'd like to strongly encourage you in the opposite direction, to always ask questions. Always do this, regardless of how others react.
Many younger people have security issues explaining their knowledge with others, and sometimes exhibit this as criticism and acidity. It's possible that's what happened here.
It's also possible that someone disliked your use of the phrase "two words", maybe because they interpreted it literally. Some things resist explanations that are both short and accurate.
Regarding od, it's a flexible format conversion tool that lets you convert arbitrary data to hexadecimal, octal and C escaped printable text. I use it a lot!
Many younger people have security issues explaining their knowledge with others, and sometimes exhibit this as criticism and acidity. It's possible that's what happened here.
I'm reminded of http://www.huffingtonpost.com/catherine-clennan/being-a-dumb... - it highlights the importance of always asking questions regardless of the context.
It's also possible that someone disliked your use of the phrase "two words", maybe because they interpreted it literally. Some things resist explanations that are both short and accurate.
Regarding od, it's a flexible format conversion tool that lets you convert arbitrary data to hexadecimal, octal and C escaped printable text. I use it a lot!