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Episode-023

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Listener 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/

Written by Kevin Wisher

January 17th, 2015 at 11:10 am

Posted in Linux,podcast

mintCast 216 – Linux Mint 17.1 KDE and Xfce

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Download News: The 17.1 upgrade path is open for all Linux Mint editions (blog.linuxmint.com) Should you freak out about the 2015 Leap Second?  Linus says “No” (wired.com) (wired.com) Fedora 19 “Schrödinger’s Cat” Reaches EOL and Is Now Definitely Dead (softpedia.com) … Continue reading

Written by mintcast@mintcast.org (Charles and Rothgar)

January 15th, 2015 at 8:32 pm

Episode-022

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FatherFinch

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

FiftyOneFifty

Photo project with Gimp

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/

Written by Kevin Wisher

January 3rd, 2015 at 4:35 pm

Posted in Linux,podcast

mintCast 215 – 2014 – A Year in Review

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Download News: Linux Mint 17.1 “Rebecca” KDE and Xfce RCs released! (KDE) (Xfce) Mageia 5 has been delayed (phoronix.com) Once again, SCO loses in court (theregister.co.uk) Serious security vulnerabilities found in NTP (eweek.com) 2014 – A Year in Review Website: … Continue reading

Written by mintcast@mintcast.org (Charles and Rothgar)

January 1st, 2015 at 6:51 pm

Episode-021

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Kwisher

Arch Pi Image
http://archlinuxarm.org/platforms/armv6/raspberry-pi

Resizing disk images , .iso , .img
http://softwarebakery.com/shrinking-images-on-linux

Honkeymagoo

Openbox: ways to customize openbox
http://www.maketecheasier.com/configure-andcustomize-openbox/
https://wiki.debian.org/Openbox#Wallpapers
http://urukrama.wordpress.com/openbox-guide/#Autostart
http://openbox.org/wiki/Help:Applications
https://code.google.com/p/tint2/wiki/Configure#Clock
https://plus.google.com/u/0/109502200836255777959/posts/5cCQwPZRM7n

FiftyOneFifty

OMXPlayer is a resource conserving video player specifically for the Raspberry Pi
http://elinux.org/Omxplayer

The youtube-dl in the Raspian repositories is broken. It works, but because it is a from 2012, as soon as you update with sudo youtube-dl -U, the binary is overwritten with a file of nul length. Solution from https://github.com/rg3/youtube-dl/issues/3908

sudo rm /usr/bin/youtube-dl # or apt-get remove -y youtube-dl
sudo wget https://yt-dl.org/latest/youtube-dl -O /usr/local/bin/youtube-dl
sudo chmod a+x /usr/local/bin/youtube-dl

Next time on LLC http://www.raspians.com/raspytube-an-openvg-front-end-for-youtube-dl/

The TabHunter extension for Firefox finds text in all open tabs

Written by Kevin Wisher

December 20th, 2014 at 11:26 am

Posted in Linux,podcast

mintCast 214 – Linux Mint Christmas Wish List

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Download News: Best Linux desktop of 2014: Linux Mint 17.1 (zdnet.com) (jimlynch.com) How to upgrade from Mint 17 to Mint 17.1 (blog.linuxmint.com) Linux Mint 17.1 OEM images available (blog.linuxmint.com) Monthly News – November 2014 (blog.linuxmint.com) Your Linux PC isn’t as … Continue reading

Written by mintcast@mintcast.org (Charles and Rothgar)

December 15th, 2014 at 9:30 pm

Episode-020

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Written by Kevin Wisher

December 6th, 2014 at 11:46 am

Posted in Linux,podcast

mintCast 213 – Linux Mint 17.1 “Rebecca”

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Download News: We have all  winner! Fresh Linux Mint 17.1 – hands down the best Beats Ubuntu, Fedora, openSUSE, Elementary (theregister.co.uk) Linux Mint 17.1 finally makes MATE’s fancy Compiz graphics easy to use (pcworld.com) Systemd fallout: Debian fork Devuan set … Continue reading

Written by mintcast@mintcast.org (Charles and Rothgar)

December 4th, 2014 at 9:07 pm

Episode-019

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Listener Feedback

Email from Bert Yerke

Announcements

New LinuxLugCast G+ community
https://plus.google.com/u/0/communities/101183999294924142060

HPR New Year Show
http://hackerpublicradio.org/

Show Topics

FiftyOneFifty

LADSPA plug-ins for Audacity and what you can do with them

YouTube video:
https://www.youtube.com/watch?v=B5eC6D1YWaM

Debian packages:
https://packages.debian.org/wheezy/ladspa-plugin

fatherfinch

Think Penguin 3rd Generation Wee review
https://www.thinkpenguin.com/gnu-linux/penguin-wee-3rd-gen-gnu-linux-desktop

dnsmasq – simple DNS redirection on Debian
https://wiki.debian.org/HowTo/dnsmasq

Written by Kevin Wisher

November 22nd, 2014 at 10:39 am

Posted in Linux,podcast

Episode-018

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Kwisher

SSD Trim for Linux
enabled email notifications on my Pi AP and received the following notification:
/etc/cron.daily/fstrim:
fstrim: /: FITRIM ioctl failed: Operation not supported
run-parts: /etc/cron.daily/fstrim exited with return code 1

Googled for fstrim and found:
http://man7.org/linux/man-pages/man8/fstrim.8.html
http://blog.neutrino.es/2013/howto-properly-activate-trim-for-your-ssd-on-linux-fstrim-lvm-and-dmcrypt/

copied the script to /usr/sbin/trim.sh:

#!/bin/sh
#
# To find which FS support trim, we check that DISC-MAX (discard max bytes)
# is great than zero. Check discard_max_bytes documentation at
# https://www.kernel.org/doc/Documentation/block/queue-sysfs.txt
#
for fs in $(lsblk -o MOUNTPOINT,DISC-MAX,FSTYPE | grep -E ‘^/.* [1-9]+.* ‘ | awk ‘{print $1}’); do fstrim “$fs”

done

Made the script executable:
chmod u+x /usr/sbin/trim.sh

Added it crontab for weekly execution:
0 1 * * 1 /usr/sbin/trim.sh

Honkeymagoo

Using Qemu to emulate the Raspberry Pi *SUCCESS*

http://www.raspberrypi.org/forums/viewtopic.php?f=29&t=37386

How to use qemu to expand the size of your .img = qemu-img resize 2013-10-13-wheezy-minibian.img +4G

Then to expand you’re rootfs you can use = fdisk /dev/sda
then type p to show the partition table
then type d to delete a partition
then 2 for the linux partition
then n to create a new partition
then p for primary
then you should just be able to hit enter to use both the default start sector, and the default last sector
then w to write the changes to the drive on the next reboot

Example: qemu-system-arm -kernel kernel-qemu -cpu arm1176 -m 256 -M versatilepb -no-reboot -serial stdio -append “root=/dev/sda2 panic=1″ -hda ~/qemu_vms/2013-10-13-wheezy-minibian.img -redir tcp:5022::22 -redir tcp:5080::80

how to ssh into your new emulated machine = ssh -p5022 root@localhost

If you install a webservice on your .img how to navigate to it = http://localhost:5080

FiftyOneFifty

Goodbye Linux Outlaws

Future project – Hacking a first gen Xbox

Amazon Echo – can we do this on a Pi with https://github.com/benoitfragit/pocketVox ?

Written by Kevin Wisher

November 8th, 2014 at 9:29 am

Posted in Linux,podcast