Create a hierarchy of random files and subdirectories

Run as :

./create_infiles.sh dir_name num_of_files num_of_dirs levels

where :

• dir_name : the name of the directory to create everything inside. CAUTION if directory already exists it will erase it and create a new empty one!
• num_of_files : the total number of files to be created
• num_of_dirs : the total number of directories to be created
• levels : the number of levels to distribute the directories (the heighest depth of a subdirectory)

1. Create directories with names with random numbers and characters of length 1-8 and distribute them to the given levels (depth of subdirectories).

For example if num_of_dirs=5 and levels=3 the directories will be created as:
thedir/zs2lW3nn
thedir/zs2lW3nn/pKbkBm
thedir/zs2lW3nn/pKbkBm/3
thedir/pUMy8K
thedir/pUMy8K/Ww4

2. Create files with names with random numbers and characters of length 1-8 and write in them a random string (numbers and characters) with size 1-128 kb. Distribute them in a round-robin order to the subdirectories.

For example if num_of_files=8 :
thedir/5Brt7w
thedir/zs2lW3nn/TtrgE6
thedir/zs2lW3nn/pKbkBm/791PBb
thedir/zs2lW3nn/pKbkBm/3/Qg
thedir/pUMy8K/xIUcAZ9C
thedir/pUMy8K/Ww4/wvPOWxLF
thedir/R
thedir/zs2lW3nn/Ch224y