What can't cut do?

cut is a simple-minded command. In particular, it doesn't understand quoted strings. If, for example, your file is:

Name,Age
"Johel,Ranjit",28
"Sharma,Rupinder",26

then:

cut -f 2 -d , everyone.csv

will produce:

Age
Ranjit"
Rupinder"

rather than everyone's age, because it will think the comma between last and first names is a column separator.

What is the output of cut -d : -f 2-4 on the line:

first:second:third:

(Note the trailing colon.)