$ sudo df -Tlh Filesystem Type Size Used Avail Use% Mounted on udev devtmpfs 16G 0 16G 0% /dev tmpfs tmpfs 3.2G 1.6M 3.2G 1% /run /dev/nvme0n1p4 btrfs 94G 6.8G 85G 8% / tmpfs tmpfs 16G 85M 16G 1% /dev/shm tmpfs tmpfs 5.0M 4.0K 5.0M 1% /run/lock /dev/nvme0n1p6 btrfs 94G 898M 91G 1% /usr/local /dev/nvme0n1p7 btrfs 187G 14G 172G 8% /var ...
Saturday, May 28. 2022
df options
Wednesday, May 25. 2022
A Different Container Way
Admin magazine has an article called Create secure simple containers with the systemd tools Nspawnd and Portabled, which offers a mechanism different from my favorite LXC mechanisms. I'll have to give it a try for simpler projects.
They seem to be subsets of the templates and caching already available via LXC, but the one stand out is an added tool called mkosi, which stands for Make Operating System Image, and is a tool for precisely that: generating an OS tree or image that can be booted. It seems to be useful for creating container images as well as images which can be used in heavier virtualization environments such as KVM.
Tuesday, May 17. 2022
Small Cameras and c-mounts
From Using a "proper" camera as a webcam there were some references to some interesting inexpensive high resolution cameras and lenses. I can't vouch for quality, but I intend to give them a try.
- C920/C922/C930 enclosure kit for CS-type lens mk2 - with some references to lenses and IR-cut filters
- IMX477 Full Report – Datasheet, Specs, Technologies and Camera Modules - f you are considering the Sony IMX477 or IMX477R, then this is for you. datasheets, specs, and related informaiton
- ArduCam embedded camera solutions on Amazon
There are suggestions for teleprompters in there as well.
Monday, May 16. 2022
Linux DIMM Decoder
Interesting portions of the query:
# decode-dimms # decode-dimms version 4.3 Memory Serial Presence Detect Decoder By Philip Edelbrock, Christian Zuckschwerdt, Burkart Lingner, Jean Delvare, Trent Piepho and others Decoding EEPROM: /sys/bus/i2c/drivers/ee1004/3-0050 Guessing DIMM is in bank 1 Kernel driver used ee1004 ---=== SPD EEPROM Information ===--- EEPROM CRC of bytes 0-125 OK (0xB200) # of bytes written to SDRAM EEPROM 384 Total number of bytes in EEPROM 512 Fundamental Memory type DDR4 SDRAM SPD Revision 1.1 Module Type SO-DIMM EEPROM CRC of bytes 128-253 OK (0x2A87) ---=== Memory Characteristics ===--- Maximum module speed 2400 MT/s (PC4-19200) Size 16384 MB Banks x Rows x Columns x Bits 16 x 16 x 10 x 64 SDRAM Device Width 8 bits Ranks 2 Rank Mix Symmetrical Primary Bus Width 64 bits AA-RCD-RP-RAS (cycles) 14-14-14-35 Supported CAS Latencies 16T, 15T, 14T, 13T, 12T, 11T, 9T ---=== Manufacturer Data ===--- Module Manufacturer Kingston DRAM Manufacturer SK Hynix (former Hyundai Electronics) Manufacturing Location Code 0x01 Manufacturing Date 2018-W21 Assembly Serial Number 0xC22D6945 Part Number KHX2400C14S4/16G Number of SDRAM DIMMs detected and decoded: 1
Wednesday, May 4. 2022
LOC RR
IATA airport codes to LOC:
$ dig +short YYC.air.jpmens.net LOC 51 6 50.037 N 114 1 11.988 W 1084.00m 1m 10000m 10m
and more fun with an associated TXT:
$ dig +short YYC.air.jpmens.net TXT "cc:CA; m:Calgary; t:large, n:Calgary International Airport"
with more at Airports of the world, and other data in DNS