example
{sleep 1; echo 123;}&
shell prompt error: Syntax error: "}" unexpected
the right one should add a space after {
{ sleep 1; echo 123;}&
why 123;}& no need space while { need a space
example
{sleep 1; echo 123;}&
shell prompt error: Syntax error: "}" unexpected
the right one should add a space after {
{ sleep 1; echo 123;}&
why 123;}& no need space while { need a space