How to check support for ext2 filesystem on android device I have a android mobile with gingerbread 2.3.4 installed.

I want to know if my device(kernel) supports ext2 filesystem. Is there any terminal command to check the support for ext2 filesystem ?
cat /proc/filesystems is the typical Linux/Unix way of determining this. It works fine on CyanogenMod, but I'm not sure about other ROMs. If you want to filter out all of the other supported filesystems you could grep the output, too (assuming you've got grep, of course):

# cat /proc/filesystems | grep 'ext*'
    ext2
    ext3
    ext4
#