Графики извлечения от PDFs

Это могло бы добиться цели:

compare_dirs()
{
    # Shows which files and directories exist in one directory but not both
    if [ $# -ne 2 ]
    then
        echo "Usage: compare_dirs dir1 dir2" >&2
        return 2
    fi
    for path
    do
        if [ ! -d "$path" ]
        then
            echo "Not a directory: $path" >&2
            return 1
        fi
    done
    comm -3 \
        <(cd -- "$1" && find . -printf '%P\0' | sort -z | quote_shell) \
        <(cd -- "$2" && find . -printf '%P\0' | sort -z | quote_shell)
}