Bash: command grouping with curly braces inside subshell

Question

When I'm trying something like this:

( echo && { echo ; echo } )

I'm getting:

-bash: syntax error near unexpected token `)'

I'm sure that I need to use subshell. And I'm sure that I need grouping inside of it. So how do I avoid the syntax error? Thank you in advance!

Answer 1

A command list must be terminated with a ; or a newline.

Instead say:

( echo && { echo ; echo ; } )
                       ^^^
                        |======= Add this

From info bash:

   { list; }
          list  is simply executed in the current shell environment.  list
          must be terminated with a newline or semicolon.  This  is  known
          as  a  group  command. ...