assuming the nick is the first word on the line:
on *:TEXT:.searchmember*:#: {
if ($read(members.txt,w,$+($2,*))) msg # $2 found
else msg # $2 not found
}
note: the # in the eventline indicates a channel, use a = for a dcc chat or a ? for a query
when using a query, replace msg # with msg $nick
when using a dcc chat, replace msg # with msg =$nick
