What does $'\n' mean in bash?

Question

An answer to this intellipaat question mentions that $'\n' is a special syntax "is not available in every shell".

I wonder what does the syntax means?

Answer 1

See below the bash man page's QUOTING section:

   Words of the form $'string' are treated specially.  The word  expands  to

   string,  with  backslash-escaped  characters replaced as specified by the

   ANSI C standard.  Backslash escape sequences, if present, are decoded  as

   follows:

...

              \n     new line

...

The expanded result is single-quoted as if the dollar sign had not been present.

This syntax is not part of the official Unix Bourne shell. It might be specific to bash.

To know about Linux join the Linux training