Shell Shell variables in a heredoc

[balanga]

Can anyone suggest how I can use a shell variable in a heredoc when I want to use a base variable ($abc) but append varying values to it as in:

part="abc"

cat <<EOF >list
$part123
$part456 
EOF

I want list to contain:-

abc123
abc456

....but can't figure out how to do this.

 

[cracauer@]

${part1}123

should work in heredoc

 

[SirDice]

POSIX Shell Tutorial

 

[balanga]

${part1}123

should work in heredoc

I thought I had tried that but put my opening bracket in the wrong place.

Thanks for correcting me.

 

[Andriy]

${part1}123

should work in heredoc

Just like in any other place where a variable name is immediately followed by some other text.
Just wanted to clarify (that this is not heredoc specific).