Unix commands delete all files starting with "X" except "X" itself. HELP!!!!?

im a new student in programming and im stuck on this question so please please HELP ME. thanks.

the question is this:

enter a command to delete all files that have filenames starting with labtest, except labtest itself (delete all files startign with 'labtest' followed by one or more characters.

rm -r -- !(labtest.*) didnt work.

I'm sure that somebody will come up with a one line command, but...

You could do it with 3 commands.

Rename labtest to any other name , then delete all files labtest* and then rename the file back to labtest.

i can only write one line to do this. this is sort of a tutorial.

---------- Post updated at 06:24 PM ---------- Previous update was at 06:13 PM ----------

i just got it its

rm labtest?*