Friday 31 July 2020

.NET Core doesn't work on a Pi Zero

.NET Core doesn't work on a Pi Zero. The Pi Zero is armv6 whereas .NET core supports amrv7. The Pi Zero uses the Thumb instruction set (16 bits rather than the normal ARM 32 bit) which the Core CLR JIT compiler does not support.

Command alias in Ubuntu

f you haven’t previously installed xclip simply run the following command in your terminal window:
Edit your BASH settings file using your favourite text editor.  I’ll be using nano, but feel free to use Gedit or Vim etc.
Then create an alias for pbcopy and pbpaste:
Close and save the file then just refresh your bash to import your new settings

Saturday 4 July 2020

docker i/o timeout on raspberry pi

I was getting an i/o timeout when pulling images on a raspberry pi.
To resolve it I had to change the nameservers on the pi to
This involved setting the primary nameserver on the router and editing /etc/resolv.conf

Friday 3 July 2020


Raspbian on a SanDisk 16GB

Device         Boot  Start      End  Sectors  Size Id Type
/dev/mmcblk0p1        8192   532479   524288  256M  c W95 FAT32 (LBA)
/dev/mmcblk0p2      532480 31116287 30583808 14.6G 83 Linux

Disk /dev/mmcblk0 - 15 GB / 14 GiB
     CHS 486192 4 16 - sector size=512

Current partition structure:
     Partition                  Start        End    Size in sectors

Warning: number of heads/cylinder mismatches 64 (FAT) != 4 (HD)
Warning: number of sectors per track mismatches 32 (FAT) != 16 (HD)
 1 P FAT32 LBA              128   0  1  8319   3 16     524288 [boot]

Warning: Bad ending sector (CHS and LBA don't match)
 2 P Linux                 8320   0  1 486191   3 16   30583808 [rootfs]

Thursday 2 July 2020

File and disk recovery

TestDisk and PhotoRec are open source file/disk recovery programs. They are install as part of the same suite and must be compiled before use.

Git source