probs compiling lex

this is my lex file ------------ test.l

%%
[A-Z]printf("%c",yytext[0]+'a'-'A');.ECHO;

how do i compile it

$ lex test.l cc lex.yy.c -o test -ll <------|
|
if this is correct do i add this line--------| @the command line or does it get added into the code file