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    What is this type of design called?
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  • Compressing files using DropStuff

    I'm about to compress about 100GB of files to be go onto DVD as back ups. My instructions were to use DropStuff to compress.

    My options are:
    Stuffit X
    Stuffit
    Zip
    Tar

    Which is best?
    It is more fun to talk with someone who doesn't use long, difficult words but rather short, easy words like "What about lunch?" Winnie the Pooh

  • #2
    Either of the Stuffit options should be good.

    Dropstuff was just an easy way to access Stuffit (an icon you drop files on and it ran stuffit on them). Since you're supposed to be using dropstuff, make sure you're producing a .sit file - stuffit can happily produce other stuff as well.

    Comment


    • #3
      If your using OS X, you should be using Stuffit v 10+. I've had earlier versions damage my OS X files.
      You're probably already done though.

      Comment


      • #4
        Honestly, I'd zip the files. That seems to have become more of a cross-platform standard, for those not running the full version of Stuffit. I rarely use Stuffit anymore, I just use the Mac OS X zip format.

        Then again, as doubting thomas stated, you're probably already done.
        "Lucy, you got some 'splainin' to do!" - Ricky Ricardo

        Comment


        • #5
          Not done at all!

          I left about a quarter of it stuffing overnight. When I left it said it had about 400 hours worth of stuffing to do, but I really hope that's incorrect because I don't have 400 hours of computer free time. Hopefully what I've stuffed will be done overnight...

          I really should do a test to see which format makes it the smallest. Then at least I will save time on burning DVDs.
          It is more fun to talk with someone who doesn't use long, difficult words but rather short, easy words like "What about lunch?" Winnie the Pooh

          Comment


          • #6
            Stuffit will usually produce a smaller file than Zip, though it will take much longer to compress.

            Tar isn't a compression format at all - it's an archive format. That is, it takes a bunch of files and makes them into one file. It's usually combined with zip compression then, to make a .tgz - that is tar, gzipped file (where gzip is a common open source zip program).

            Rar, bzip and Ace are also compression formats that get better compression ratios (albeit again slower) than zip. I don't remember seeing any rar or ace programs for Macs, though - but I'd guess there must be some. Bzip is another open source one, so you can certainly get it for Macs.

            That's about all the general purpose compression software in common use at the moment, though there are plenty of more obscure ones.

            Comment


            • #7
              there is a rar program unrarx but there others just google mac rar

              100g buda phew

              i would look for a image compression instead
              When I awoke today, suddenly nothing happened
              But in my dreams, I slew the dragon

              Comment


              • #8
                Different size file, find you, with different type of files, when you compress. Best compress, this terminal app called. Will find your smallest file size it will. Unwise is he who uses it on 100GB.


                #!/bin/sh

                # bestcompress - given a file, try compressing it with all the available
                # compression tools and keep the compressed file that's smallest, reporting
                # the result to the user. If '-a' isn't specified, it skips compressed
                # files in the input stream.

                Z="compress"
                gz="gzip"
                bz="bzip2"
                Zout="/tmp/bestcompress.$$.Z"
                gzout="/tmp/bestcompress.$$.gz"
                bzout="/tmp/bestcompress.$$.bz"
                skipcompressed=1

                if [ "$1" = "-a" ] ; then
                skipcompressed=0 ; shift
                fi

                if [ $# -eq 0 ]; then
                echo "Usage: $0 [-a] file or files to optimally compress" >&2; exit 1
                fi

                trap "/bin/rm -f $Zout $gzout $bzout" EXIT

                for name
                do
                if [ ! -f "$name" ] ; then
                echo "$0: file $name not found. Skipped." >&2
                continue
                fi

                if [ "$(echo $name | egrep '(\.Z$|\.gz$|\.bz2$)')" != "" ] ; then
                if [ $skipcompressed -eq 1 ] ; then
                echo "Skipped file ${name}: it's already compressed."
                continue
                else
                echo "Warning: Trying to double-compress $name"
                fi
                fi

                $Z < "$name" > $Zout &
                $gz < "$name" > $gzout &
                $bz < "$name" > $bzout &

                wait # run compressions in parallel for speed. Wait until all are done

                smallest="$(ls -l "$name" $Zout $gzout $bzout | \
                awk '{print $5"="NR}' | sort -n | cut -d= -f2 | head -1)"

                case "$smallest" in
                1 ) echo "No space savings by compressing $name. Left as-is."
                ;;
                2 ) echo Best compression is with compress. File renamed ${name}.Z
                mv $Zout "${name}.Z" ; rm -f "$name"
                ;;
                3 ) echo Best compression is with gzip. File renamed ${name}.gz
                mv $gzout "${name}.gz" ; rm -f "$name"
                ;;
                4 ) echo Best compression is with bzip2. File renamed ${name}.bz2
                mv $bzout "${name}.bz2" ; rm -f "$name"
                esac

                done

                exit 0
                Media & Marketing; the perfect marriage. maa.technical-t.com

                Comment


                • #9
                  whoa. yoda does unix. why does that not surprise me?
                  Remember: Wherever you go, there you are.

                  Comment


                  • #10
                    Originally posted by mojoprime
                    whoa. yoda does unix. why does that not surprise me?
                    Ha!
                    It is more fun to talk with someone who doesn't use long, difficult words but rather short, easy words like "What about lunch?" Winnie the Pooh

                    Comment


                    • #11
                      Bash scripting is a bit like using the force, only you've got no Jedi mind trick to use on chicks.

                      Comment

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