Shell Programming and Scripting

Hello,
I am a bit stumped on this. I am attempting to create 24 empty directories with a loop. Seems like I have incorrect syntax. When I run the following command I get the error below.

Command

Code:

$ for i in {2..24}; do mkdir $i_MAY_2011 ; done

Error x 24

Code:

mkdir: missing operand
Try `mkdir --help' for more information.

When I run the command as so it works but it creates brackets in the directory name which is unacceptable.

Command

Code:

$ for i in {2..24}; do mkdir {$i}_OPRA_MAY_2011 ; done

Directory Created

Code:

{N}_OPRA_MAY_2011

Would someone please be kind enough to explain what I am doing wrong here?

Thanks,
Jaysunn

Code:

$ for i in {2..24}; do mkdir ${i}_MAY_2011 ; done

Hello,
This works perfectly now. Thank you for your time.

jaysunn