VirtualTam's bookmarks

21. postmarketOS - a touch-optimized, pre-configured Alpine Linux that can be installed on smartphones and other mobile devices

    2018-05-24
    arm linux linux/alpine mobile

    Permalink
    • https://wiki.postmarketos.org/wiki/Devices
    • https://postmarketos.org/blog/2017/05/26/intro/
    • https://postmarketos.org/blog/2018/04/14/lowlevel/#why-is-proprietary-cellular-firmware-a-problem-again
22. The Pyra | Official Pyra and Pandora Site

    2018-05-18
    console device hardware linux linux/debian portable

    Permalink
23. Centos/RHEL 7 - Fix LVM boot issues after migration from ESXi to VirtualBox

    2018-04-20
    boot bootloader/grub filesystem filesystem/lvm fstab linux linux/centos linux/kernel linux/red-hat

    Permalink

    Here are the steps I used to migrate a CentOS 7 VM from (presumably?) an ESXi server, to a local VirtualBox environment.

    The LVM volumes were not detected at boot, and after the boot timeout, the OS fell back to the Dracut emergency shell.

    • get a CentOS minimal installation CD
    • check the VM's resources and peripherals:
      • ensure there are no floppy drives (!)
      • setup CPU and RAM resources
      • check virtual drives
      • add an SCSI optical drive if needed
    • optional: convert the virtual drive images from VMDK to VDI
    • mount the CentOS installation disc
    • boot on the installation disc:
      • select "Troubleshooting", then "Rescue"
      • let the rescue utility detect filesystems and mountpoints
    • $ chroot to the detected environment
    • backup files:
      • /etc/fstab
      • /boot/grub/grub.cfg
    • under /boot, backup the initrd and initramfs for the current configuration (these will be overwritten)
    • compare the current /etc/fstab with the output of $ lsblk and $ blkid
    • if needed, manually edit /etc/fstab to use the appropriate block device UUIDs, identifiers and mountpoints
    • regenerate GRUB configuration:
      • $ grub2-mkconfig -o /boot/grub2/grub.cfg
    • if needed, reinstall GRUB:
      • $ grub-install /dev/sda
    • rebuild initrd:
      • $ mkinitrd --force /boot/<initrd_image> <kernel_version>
    • rebuild initramfs:
      • $ dracut --force <kernel_version>
    • exit the chroot
    • unmount the installation disc
    • reboot
    • optional but highly recommended: cross your fingers
    • ...
    • profit!
24. Linux - Network over USB (usbnet)

    2018-04-03
    linux microsoft/windows network network/ethernet raspberry-pi serial-communication/usb

    Permalink

    • http://www.linux-usb.org/usbnet/

    • http://www.davehylands.com/linux/gumstix/usbnet/

    • https://en.wikipedia.org/wiki/Ethernet_over_USB

    • https://superuser.com/questions/145933/how-to-add-usbnet-driver-to-the-linux-kernel#145944

    • https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/drivers/net/usb/usbnet.c

    • https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/drivers/net/usb/cdc_ether.c

    • https://www.systutorials.com/linux-kernels/tag/cdc_ether/

    • https://raspberrypi.stackexchange.com/questions/9636/usb-to-usb-mimicking-ethernet

    • https://www.raspberrypi.org/forums/viewtopic.php?f=36&t=131042

    • https://www.raspberrypi.org/forums/viewtopic.php?f=63&t=130810

    • https://www.raspberrypi.org/forums/viewtopic.php?p=865905#p865905

    • https://raspberrypi.stackexchange.com/questions/13917/raspberry-pi-communication-over-usb

    • http://wiki.openmoko.org/wiki/USB_Networking

    • http://www.webos-internals.org/wiki/USBnet_Setup

    • https://developer.ridgerun.com/wiki/index.php/How_to_use_USB_device_networking

    • http://www.ev3dev.org/docs/tutorials/connecting-to-the-internet-via-usb/

25. Generative Technology :: Jeff Lindsay, Open source hacker

    2018-01-21
    device extension hack internet modular

    Permalink
    • https://www.amazon.com/Future-Internet-How-Stop/dp/0300151241
26. Shodan

    2018-01-09
    device hack internet-of-things network privacy security

    Permalink

    • https://news.ycombinator.com/item?id=5512477

    • https://thehackernews.com/search/label/shodan

    • https://www.forbes.com/sites/kashmirhill/2013/09/05/the-crazy-things-a-savvy-shodan-searcher-can-find-exposed-on-the-internet/#7d00f4f23c7e

    • https://www.wired.com/2013/05/googles-control-system-hacked/

    • https://www.forbes.com/sites/andygreenberg/2011/11/09/researchers-spot-blue-coat-web-control-gear-in-another-bad-regime-burma/#6a615a3e329c

    • https://www.forbes.com/sites/kashmirhill/2013/08/13/how-a-creep-hacked-a-baby-monitor-to-say-lewd-things-to-a-2-year-old/#3ce17adcaad6

    • https://raidforums.com/Thread-Using-Shodan-for-Fun-and-Profit

27. Windows - Locate & fix the MBR

    2018-01-05
    boot microsoft/windows partition storage

    Permalink
    • https://superuser.com/questions/510485/how-to-tell-which-physical-disks-have-bootable-mbr
    • https://neosmart.net/wiki/fix-mbr/
    • https://neosmart.net/wiki/reboot-and-select-proper-boot-device/
    • https://askubuntu.com/questions/859685/how-to-delete-the-bootable-flag-of-a-partition
    • https://superuser.com/questions/596919/how-to-set-boot-disk-flag-with-diskpart
28. LibreNMS - A network monitoring system that provides a wealth of features and device support

    2017-11-13
    linux network observability programming/php sysadmin system

    Permalink
    • https://github.com/librenms/librenms
    • https://community.librenms.org/
    • https://www.reddit.com/r/LibreNMS/
29. Linux Filesystems 101 - Block Devices

    2017-08-24
    file format linux operating-system storage system

    Permalink
30. Netflix/stethoscope: Personalized, user-focused recommendations for employee information security.

    2017-08-22
    device framework/flask framework/react hardware programming/javascript programming/python security

    Permalink
    • http://techblog.netflix.com/2017/02/introducing-netflix-stethoscope.html
    • https://stethoscope.readthedocs.org/
31. Theremin’s Bug: How the Soviet Union Spied on the US Embassy for 7 Years | Hackaday

    2017-08-08
    acoustic bug hide radio spy theremin

    Permalink
    • https://en.wikipedia.org/wiki/The_Thing_(listening_device)
    • http://cryptomuseum.com/covert/bugs/thing/index.htm
32. PdDroidParty - Pure Data patches on Android devices

    2017-08-02
    mobile/android multimedia/pure-data user-interface

    Permalink
    • https://github.com/chr15m/PdDroidParty
33. periph.io - communicate with hardware peripherals

    2017-04-21
    bus device hardware programming/go

    Permalink
34. The Cult of DD | Hacker News

    2017-03-30
    block bsd dd device io linux

    Permalink
35. How to get information about graphics card (GPU) on Linux

    2017-03-05
    device hardware/cpu hardware/gpu linux system

    Permalink
36. rafael-santiago/dev-enigma: Let's implement an Enigma machine as a char device just for fun.

    2016-11-02
    cipher cryptography enigma history linux linux/kernel

    Permalink
37. LAVA - Linaro Automated Validation Architecture

    2016-08-15
    automation continuous-integration device framework/django lava linux/debian pipeline programming/python programming/testing web

    Permalink
    • https://wiki.linaro.org/LAVA
    • https://wiki.debian.org/LAVA
    • https://lava.debian.net/
    • https://lava.debian.net/static/docs/v2/index.html
    • https://validation.linaro.org/static/docs/v2/first-installation.html
    • https://validation.linaro.org/static/docs/v2/pipeline-admin.html
    • https://validation.linaro.org/static/docs/v2/development-intro.html
    • https://www.linaro.org/blog/lava-blog/lava-fundamentals/
    • https://git.linaro.org/?s=lava%2Flava
38. MOD Devices

    2016-01-29
    arm audio diy fx guitarix jack linux lv2 openav rakarrack stompbox web

    Permalink
    • https://www.kickstarter.com/projects/modduo/mod-duo-the-limitless-multi-effects-pedal/
    • https://blog.moddevices.com/category/videos/
    • https://blokas.io/modep/

    via https://autostatic.com/2015/11/25/mod-sysadmin/

39. ALSA: multiple USB sound cards

    2015-01-12
    audio card device linux linux/alsa sound

    Permalink

    # /etc/modprobe.d/snd_usb_audio.conf
    options snd_usb_audio vid=<vid1>,<vid2> pid=<pid1>,<pid2> index=<index1>,<index2> enable=1,1
    

    example:

    # 5: M-Audio Fast Track Pro 
    # 6: Focusrite Scarlett 6i6
    options snd_usb_audio vid=0x763,0x1235 pid=0x2012,0x8012 index=5,6 enable=1,1
    

    See also: http://alsa.opensrc.org/MultipleCards

40. Linux: list detected soundcards

    2015-01-08
    audio linux linux/alsa pulseaudio sound system

    Permalink

    # list USB devices
    $ lsusb
    
    # list cards detected by ALSA
    $ cat /proc/asound/cards
    
    # list cards supported  by PulseAudio
    $ pacmd list-cards | grep name: