# Loop through all files in folder and append a random string to end of filename
for file in *.*
do
    name=${file%.*}
    ext=${file##*.}
    random=$(LC_CTYPE=C tr -cd 'a-zA-Z0-9' < /dev/urandom | head -c 10)
    mv "$file" "${name}_${random}.${ext}"
done

# Loop through and transform spaces to underscores
for file in *.*
do
  mv -- "$file" "${file// /_}"
done

# Create a csv of all the filenames in a directory
"ls" > files.csv