End of line char ($) doesn't work inside square brackets

Question

Putting $ inside square brackets doesn\'t work for grep.

~ $ echo -e \"hello\\nthere\" > example.txt
~ $ grep \"hello$\" example.txt 
hello
~         


        

Answer 1

You can, however, use $ in a parenthesis grouping, which facilitates the use of | (or), which can accomplish the same idea as a square bracket group.

Something like the following might be of interest to you:

~ $ cat example.txt 
hello
there
helloa
hellob
helloc

~ $ grep "hello\($\|[ab]\)" example.txt
hello
helloa
hellob