Episode-023

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Ep-023Listener Feedback

Richard Gordon:
Asks about using a single home directory for multilple distros
Honkeymagoo replied:
Matt McGraw did an HPR episode on this subjuect and also did write up of it for Knightwise.com
http://hackerpublicradio.org/eps.php?id=1567
http://knightwise.com/the-perfect-partition-setup-for-a-multibooting-system/
Going Linux epidsode 229- Dual Booting Advanced
http://www.archive.org/download/glp229/glp229.ogg

Chris Harris:
Asked about possibly using a RPI or other low powered devices for a firewall.
Chris, this has come up on KernelPanicOggcast.net. JLindsay was of the opinion a Pi could be a bottle neck as the single network interface is actually connected to the slower USB bus. Of course, the required second NIC would have to be on the USB anyway. A better option might be the BannaPi model B, which was designed to be a router, or an ODroid C1 from hardkernel.com. Another consideration is that I’ve not heard of any firewall distribution, like mOnOwall, being ported to ARM, so you might have to use ipTables. -5150

Show Topics

FiftyOneFifty

Debian NoRoot for Android

Debian NoRoot ( https://play.google.com/store/apps/details?id=com.cuntubuntu&hl=en ) install a working Debian desktop running XBMC inside an app, and as the name implies, does not require root, but must be installed on internal storage. It installs under a compatibility layer, which differs from an emulator in the the host must be running compatible hardware and from a virtual machine in that a compatibility layer uses binaries from the underlying OS wherever possible.

The first time you run the app after installation, it will ask you to comfirm that you really want to download 600Mb of files necessarry to run the app and warns you it will take some time. The second time the app is run you will have to wait until the files are extracted,then you will se an XFCE desktop. The desktop is not touch aware, so you use the whole screen as a touchpad to move the mouse. A single tap on the screen is left mouse click, a two finger tap is a right mouse click, and a two finger drag is a scroll. Bringing up the virtual keyboard obscures half the desktop, so a Bluetooth keboard and mouse would be recomended. If you want sound support, there is script on the desktop to install another 100Mb of binaries. By default, there are no pawwords, but you go have user and root terminals. I’ve seen comments that recomend you install packages with apt-get as Synaptic can be unstable.

As you might expect, very few applications are included, in fact they are pretty much limited the teminals, Synaptic, and Thunar (the file manager does have access to the internal SD as well as the virtual hard disk. You will have to install your own browser. I have installed openssh-server, but external connections are refused, probably because of the lack of user passwords (I didn’t want to change passwords until after this show). I was able to install Mumble, but the Play Store page says all audio is laggy, so while I may try it during the show, I don’t expect much.

fatherfinch

SteamOS Beta Requirements
http://store.steampowered.com/steamos/buildyourown

Ken Starks Update
http://fossforce.com/2015/01/get-well-ken-and-firefox-gets-an-update/

Happy New Year!!

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Last Updated on January 09, 2015 at 4:32 am.

Episode-022

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Ep-022FatherFinch

Command Line Subnet Calculators – Much Easier than Adding
ipcalc (non-rel)
Important switches
-b removes all of the bianry output
-s n where n is the number of hosts you would like in a network

examples
all network information for address 192.168.100.12
ipcalc 192.168.100.12/26
same as
ipcalc 192.168.100.12 255.255.255.192
If I wanted to find the smallest network possible to have 88 hosts I can enter the following
ipcalc -s 88 10.30.0.0

ipcalc (rehl based)
Important switches
-b display brodcast address
-m display subnet mask
-p display prefix
-n display network

examples
display the subnet mask for the following cidr notation
ipcalc 192.168.100/28 -m
display the broadcast address, prefix, and network of the following address
ipcalc 172.16.20.122 255.255.252.0 -bpn

Honkey Magoo

OpenMediaVault
http://www.openmediavault.org/

Raspberry Pi Images
http://sourceforge.net/projects/openmediavault/files/Raspberry%20Pi%20images/

Virtual Images
http://sourceforge.net/projects/openmediavault/files/vm/

FiftyOneFifty

Photo project with Gimp
How to crop a photo in Gimp so it exactly matches the dimensions of the output media. I had some snapshots infamily albums I wanted to blow up for framing. If you are working fom a 3×5 snapshot, you will probably want to scan it a nearly the highest resolution your scanner is capable of, if the original media is allready 8×10, you will want to use a more manageable resolution like 800dpi.

If the original media has a different aspect ratio than the output media, say 8×10 (though I was using 8.5×11, because that’s size of my photo printer paper), you may want to crop the photo rather than leaving whitespace at the sides or on the top and bottom. Often, there is material at the edges of photos that can be left off and still make a god picture. If so, you can make your rectangular selection tool have the same aspect ratio as the target media by clicking on the selection tool in the Toolbox, then below under Tool Option, checking the tickbox for “Fixed”, select “Aspect Ratio” from the dropdrown, and then filling in the aspect ratio. For 8.5×11 photographic printer paper, you would use 8.5:11 for portrait or 11:8.5 for landscape.

You with have to position the selection tool by grabbing the corners. Once you have placed it where only unimportant parts of the picture are outside the selection area, go to the Edit menu and select “Copy”, then select “paste as new image”. Now, select “Print” from the file menu. Select the appropriate Orientation from the “Page Setup” tab. Next, on the “Image Settings” tab, uncheck “Ignore Margins” and decrease either the X or the Y resolution (as long as you leave them chained) until the image fills the Preview. On the other hand, if you are printing an 8×10 photo on 8.5×11 paper, set your margins appropriately.