BASH_ make items in subdirs flat in top dir

script.sh

# >>>>>>>>>
# script to copy this structure - TO NEW DIRECTORY:

# slike1
# ├── 12063DSC04233.JPG
# ├── 27454DSC04230.JPG
# └── sub1
#     ├── 15997DSC04140.JPG
#     └── sub12
#         └── 25022DSC04150.JPG

# <<<<<<<<<
# to this structure (note random file prefix for legit dups):

# slike2
# ├── 10892-25022DSC04150.JPG
# ├── 19939-15997DSC04140.JPG
# ├── 21121-27454DSC04230.JPG
# └── 22714-12063DSC04233.JPG




find ./slike/* -type f |
  while IFS= read -r name; do  # Read one line and store it in variable $name

    cp "${name}" "./slike1/$RANDOM-${name##*/}"

  done