any@abox:~$ echo  "function lala() { echo \"gi\"; }"> lala.sh
any@abox:~$ function lala() { echo "gi"; }
any@abox:~$ lala
gi
any@abox:~$ echo  "function lala() { echo \"gi\"; }"> lala.sh
any@abox:~$ cat lala.sh
function lala() { echo "gi"; }
any@abox:~$ sh lala.sh
lala.sh: 1: Syntax error: "(" unexpected