An Automator service that creates a .tar from files and folders selected in the Finder

create_tar.workflow

#thanks to Gordon Davisson on SO: http://stackoverflow.com/a/35146562/3625228

files=()

for f in "$@"
do
	path=`dirname "$f"`
	file=`basename "$f"`

	files+=(-C "$path" "$file")
done

tar -cf ~/Desktop/archive.tar "${files[@]}"

For some reason, the .tar's created are double the size of the originating folder. Any ideas on how to resolve this? I tried taking the loop out and just tar'ing individual folders, but it still double in size with tar'd. Un-tar'd it goes back to same size. Same result on folders with very few large files. 7 GB turned into 14GB.

files=()
path=''

for f in "$@"
do
path=dirname "$f"
file=basename "$f"

files+=(-C "$path" "$file")

done

tar -vc --exclude '02_Footage' -f ~/Desktop/"$file"_CON.tar "${files[@]}"