[Cialug] Good File Compression Format For The Muggles?

[David Champion]

Yeah that depends on your firewall. A good one would know all of the common
compression tools, and scan them based on the file contents, not just the
extension... because renaming the file is the first thing people will try
to circumvent the firewall.

-dc


On Wed, Jan 25, 2017 at 4:02 PM, Andrew Denner <linux-list at upeke.com> wrote:

> It all depends on the mail system, I have seen email systems that will
> strip anything that looks like a .zip containing an exe. 7z files always
> went through without a problem though.
>
> On Wed, Jan 25, 2017 at 3:46 PM, kslaugh19 <kslaugh19 at gmail.com> wrote:
>
> > You could always name the file something other than .zip.
> > Tar -czvf file.tar.piz file1
> > Then just have the end user edit the name back to .zip.
> > It's extra steps but it bypasses the firewall...which can or cannot be a
> > good thing...
> > ^Rabid_Gerbil^
> >
> >
> > Sent via the Samsung Galaxy S7 active, an AT&T 4G LTE smartphone
> > -------- Original message --------From: David Champion <
> > dchamp1337 at gmail.com> Date: 1/25/17  15:39  (GMT-06:00) To: Central Iowa
> > Linux Users Group <cialug at cialug.org> Subject: Re: [Cialug] Good File
> > Compression Format For The Muggles?
> > Also: be aware that some people's firewalls and / or email filters may
> > block .zip or other compressed or archived file extensions. Just another
> > thing to keep in mind when you're planning to distribute files.
> >
> > -dc
> >
> > On Wed, Jan 25, 2017 at 2:40 PM, Jared Brees <fromj2sitsme at msn.com>
> wrote:
> >
> > > If the compression isn't a high enough ratio, pick what you want, and
> > just
> > > tell the Windows user they'll need 7-zip to open it. There aren't a lot
> > of
> > > options. Test it on a Windows system you own first, and send the
> > > instructions to the user.
> > >
> > >
> > > Jared Brees<http://me.relatedtotechnology.org/> - Squirrel
> Photographer<
> > > http://squirrels.relatedtotechnology.org/>
> > >
> > >
> > > ________________________________
> > > From: cialug-bounces at cialug.org <cialug-bounces at cialug.org> on behalf
> of
> > > Scott Yates <Scott at yatesframe.com>
> > > Sent: Wednesday, January 25, 2017 2:20 PM
> > > To: Central Iowa Linux Users Group
> > > Subject: Re: [Cialug] Good File Compression Format For The Muggles?
> > >
> > > You are probably stuck with .zip for the everyday windows user.  Even
> > then
> > > they likely don't understand that it is not really a folder of files,
> as
> > > windows presents it that way.
> > >
> > > On Wed, Jan 25, 2017 at 1:35 PM, Todd Walton <tdwalton at gmail.com>
> wrote:
> > >
> > > > I'm curious. What file compression formats do you have good luck with
> > > > sending to people? I know that a client running Windows would be
> almost
> > > > certainly sure to be able to open a Windows-compressed zip file. But
> I
> > > > sometimes need better compression than that. When I send gzip zipped
> > > files
> > > > (.tar.gz) I usually get back "my app says your file is corrupted,
> > dude".
> > > > bzip2 isn't much better than gzip. What else? 7zip? Avoid non-default
> > > > options?
> > > >
> > > > By the way, I found this informative page:
> > > > https://blogs.reucon.com/srt/compression-gzip-vs-bzip2-vs-
> 7-zip-8296/
> > > >
> > > > === Method...Size...Ratio...CompSpeed...DecompSpeed
> > > > === gzip 89MB 54% 0m13s 0m05s
> > > > === bzip2 81MB 49% 1m30s 0m20s
> > > > === 7-zip 61MB 37% 1m48s 0m11s
> > > >
> > > > --
> > > > Todd
> > > > _______________________________________________
> > > > Cialug mailing list
> > > > Cialug at cialug.org
> > > > http://cialug.org/mailman/listinfo/cialug
> > > >
> > > _______________________________________________
> > > Cialug mailing list
> > > Cialug at cialug.org
> > > http://cialug.org/mailman/listinfo/cialug
> > > _______________________________________________
> > > Cialug mailing list
> > > Cialug at cialug.org
> > > http://cialug.org/mailman/listinfo/cialug
> > >
> > _______________________________________________
> > Cialug mailing list
> > Cialug at cialug.org
> > http://cialug.org/mailman/listinfo/cialug
> > _______________________________________________
> > Cialug mailing list
> > Cialug at cialug.org
> > http://cialug.org/mailman/listinfo/cialug
> >
> _______________________________________________
> Cialug mailing list
> Cialug at cialug.org
> http://cialug.org/mailman/listinfo/cialug
>