hi there,
i'm new to UNIX( just 3month used),
i found my new box contained alot of files and directories in /home/box/
i've tried to search script in tis forum and found many of them but, i don't know
how to combine them to make a script, although using pipes.
my tasks are:

1) to scan user dir in /home/user/ - i'm used ls-ld /home/$user/ , $user must be key in.

2) Then, grouping all files in scanned dir(in task 1), into group of extensions such as ".txt",".sh",".dat"
i used the ls -l | awk 'BEGIN {FS="."} {print $2}'>index.txt

3) Based on index.txt, i'm going to make directories referring to those extensions eg.
/home/user/txtExtension
/home/user/datExtension/
then move all of files to their extension dir. i'm sorry, i can't find the way to create this script.

i tried all my best to combine all above simple script but, no.3 is quite hard for me.
is there any UNIX-Shell expert have ideas, solutions, or even example scripts to guide me
Regards,
Helmi.