Who can solve this bash :script?

[alexxxprog]

Thank you very much for who can solve this bash script:
"Create on the filesystem a bash proceedure createdata that creates collections that that will have to contain a variable, a random number, comprised between 300 and 600, of binary files of dimension comprised between 10 Kbytes and 30 kbytes.
Also the names of the files are random and are composed from 20 chars plus the jpg extension."

Working sample:

 
createdata /data 20
 
result:
 
/data
      tlc01
             collection001
                             ttretdgdfgasjojgvao.jpg
                             grtghgfhysystudbbnh.jpg
                             ...
             ...
             collection019
                             ...

it must create therefore beyond to the directory given the sottodirectory tlc01, then the 20 collections

Thanks indeed for who can help me :-)

[arne]

Thanks indeed for who can help me :-)

Please have a look at these guidelines, esp. at the first paragraph.