Better quote to execute command on shell script

I'm in doubt of the diference and which one is the better quot开发者_如何学Goe to execute a command in shell script.

For example, I have this two examples:

echo "The name of the computer is `uname -n`"
echo "The name of the computer is $(uname -n)"

Which one is better? Or there is no diference?

The $(...) one is generally recommended because it nests easier. Compare:

date -d "1970-01-01 $(echo "$(date +%s)-3600"|bc) sec UTC"

date -d "1970-01-01 `echo \"\`date +%s\`-3600\"|bc` sec UTC "