Shell Programming and Scripting

Hello everyone - I have the task to create a file list script that will list files in directory based on the parameters passed to the program.
It has to be a C Shell - I mentioned that before but I got closed - the company only allows this shell for security purposes I guess.

Anyway, here is the code I am trying to run:

Code:

# List files from
# current directory
set command = `ls`
set i = 1
while ($i <= $#argv)
 switch ($argv[i])
  case "l":
       echo `ls -l`
       breaksw
  default:
       echo $command;
  endsw
@ i = $i + 1
end

If I run the program with no parameters passed nothing happens - no echo.
If I pass "l" then I get an error " Missing -."

Is there a typo in the code that I cannot see?
Thank you.

Your previous thread was closed because you mentionned it was a university box and talked about assignement, if this is some assignement or homework please ask to close it and post in the adequate forum following the rules that are there,, if you say its not but we find out it is you will quite surely be banned, what makes our thread a bit suspicious is the need of c-shell which is moslty used in colleges or universities when most of them had sparcstations with SunOS ( 4? )... ( there has been some evolution since hehe...), I am trying to understand what can it be for security reasons...

It has to do with test vs production.
Our IT will not allow any testing in production environment - that is why we have a box, "university" box laying around that we can use to mess around with Linux - big, bulky gray machine, it may be a Sun server as you mentioned.
Once we get our testing completed we will submit to them and they will move it to production on their box - why C? Good question but I don't have an answer - not the Linux guy.
Regardless - don't worry about it. I think you should give the user the chance to explain something before closing a thread.

Thank you for the help with the previous post.

Code:

set command = `ls`
set i = 1
while ($i <= $#argv)

OK you set command to a list produced by ls, but where is argv going to get the result? since its a positional parameter it expects them as such...
so for me $#argv = 0...

Well the issue was an error message i.e. "Missing -."
It had to do with spelling. I wrote
switch ($argv[i]) and it should be switch ($argv[$i])

Works now - thank you again.
I'll try to be more specific next time