iam-TJ · HackerTrans

iam-TJ

1,507 karmajoined 10년 전

Submissions

Rare copy of US Declaration of Independence found by volunteer in UK archives

bbc.co.uk

12 pointsby iam-TJ23일 전3 comments

Debian Testing/Trixie removes systemd-resolved

36 pointsby iam-TJ작년3 comments

Smart particle could hold climate change key

bbc.com

1 pointsby iam-TJ2년 전0 comments

Oh look, cracking down on Big Tech works. Brave, Firefox, Vivaldi surge on iOS

theregister.com

5 pointsby iam-TJ2년 전0 comments

Cyber-attack on UK's electoral registers revealed

bbc.com

9 pointsby iam-TJ3년 전1 comments

Police warn Android phone users over 999 call feature

bbc.com

4 pointsby iam-TJ3년 전0 comments

MOVEit hack: BBC, BA and Boots among cyber attack victims

bbc.com

7 pointsby iam-TJ3년 전1 comments

Asteroid 2023 BU: Space rock to pass closer than some satellites

bbc.com

2 pointsby iam-TJ3년 전0 comments

Warning after Amazon customer sent dog food instead of iPhone

bbc.com

4 pointsby iam-TJ4년 전0 comments

Mystery of BBC radio's first broadcasts revealed 100 years on

bbc.com

63 pointsby iam-TJ4년 전20 comments

Musk tells Twitter staff remote working will end

bbc.com

7 pointsby iam-TJ4년 전3 comments

Boeing's Starliner launch pushed back again to April 2023

theregister.com

7 pointsby iam-TJ4년 전0 comments

RIPE meetings: IP addresses as spoils of war

techaint.com

212 pointsby iam-TJ4년 전73 comments

Foreigners can remotely open business in Ukraine and pay taxes here

global.espreso.tv

3 pointsby iam-TJ4년 전1 comments

Ask HN: Static site generator that can cope with octopus juggling geysers?

15 pointsby iam-TJ4년 전23 comments

Starlink is reducing your monthly service fee

130 pointsby iam-TJ4년 전70 comments

Linode London data-center down for 2.5 hours in 26

12 pointsby iam-TJ4년 전0 comments

Starlink at 130km/h (80mph) in Ukraine

twitter.com

10 pointsby iam-TJ4년 전1 comments

A Superior Alternative to LiFePO4 for Long-Lived Low Voltage Li-Ion Cells

iopscience.iop.org

4 pointsby iam-TJ4년 전2 comments

Automatic in-browser Ukrainian text translation and local news sources to follow

3 pointsby iam-TJ4년 전0 comments

comments

그저께discuss

It's important to also know that the U.K. has recently mandated that all new build residential buildings (houses and apartment buildings) must have some form of on-site renewable electricity generation system (typically expected to be solar) from 2027.

This requirement was added to the "Future Homes and Builds Standards" early in 2026 [0] and the regulation is described in section 7.1(b) [1] of the regulations that says "On-site electricity generation systems must be commissioned to ensure that they produce as much electricity as is reasonable in the circumstances".

"reasonable" here means 'considering roof-space' or 'yard space' and could be implemented using solar, wind, or possibly water (if you live in a former water-mill!).

[0] https://www.gov.uk/government/publications/the-future-homes-...

[1] https://assets.publishing.service.gov.uk/media/69c122a6cfa34...

9일 전discuss

The best bit of that is:

> In this role, you will own end-to-end bill run execution across all AWS partitions, drive the technical vision for autonomous billing operations, and build the team that ensures every customer receives an accurate cost estimated in minutes ...

20일 전discuss

Most likely Hydrazine propellant tanks:

https://www.space-propulsion.com/spacecraft-propulsion/hydra...

23일 전discuss

The current recovery status:

https://status.linuxfoundation.org/incidents/3y1k8b4ky71t

지난달discuss

The full comment:

“Biological limits are real, but digital potential is infinite. If we starve our data infrastructure of cooling resources just to sustain baseline human comfort, we are actively delaying the birth of a super-intelligence that could solve all of our resource problems in the first place. Sometimes you have to prioritize the intelligence that will save us over the biology that slows us down.”

As someone spending time daily irrigating food crops I think it's time he was buried head-first in the Sahara desert for a week!

Context: A keynote panel on June 17th at VivaTech 2026 in Paris.

지난달discuss

Am I the only one that thought RTK was Real-Time Kinematics used for precision with satellite navigation?

지난달discuss

Need to be clear that "full http server in pure bash" is incorrect. Bash cannot listen on a TCP/UDP socket for incoming connections.

bash-web-server project builds a C language socket listener [0] that is dynamically loaded at run-time as a "built-in" module that makes the functionality available.

[0] https://github.com/bahamas10/bash-web-server/tree/main/loada...

2개월 전discuss

  $ systemctl cat [email protected]
  # /etc/systemd/system/[email protected]
  [Unit]
  Description=Periodic fetch of public mailing list

  [Timer]
  # twice a day
  5,17:35
  RandomizedDelaySec=1h
  Persistent=true

  [Install]
  WantedBy=multi-user.target

4개월 전discuss

This should become a new round to compliment Mornington Crescent [0] on the BBC Radio programme I'm Sorry I Haven't A Clue [1]

[0] https://en.wikipedia.org/wiki/Mornington_Crescent_(game)

[1] https://en.wikipedia.org/wiki/I%27m_Sorry_I_Haven%27t_a_Clue

4개월 전discuss

"So you can’t transparently bridge Ethernet devices’ MAC addresses through a WiFi client interface. This is why we need hostapd."

I think that is incorrect. hostapd handles the authentication side of things, but 4addr tuples are controlled by 'struct wireless_dev.use_4addr', and can be set by 'ip link set type bridge_slave ... proxy_arp_wifi on', `iw dev ... 4addr on', and if using systemd-networkd, with slave interface's

  [Bridge]
  ProxyARPWiFi=yes

(and networkd doesn't need hostapd's bridge= option since networkd handles that aspect.)

Kernel then uses NL80211_IFTYPE_AP_VLAN and handles the proxy operation.

6개월 전discuss

Barclays, with standard current accounts, provides several methods none of which are SMS. There's a separate pin-code device (called Pinsentry) that does TOTP and challenge-response, or passcodes for both telephone and Internet banking.

6개월 전discuss

Firefox Nightly v149 has added experimental support via Settings > Firefox Labs:

  Webpage Display
  Media: JPEG XL
  With this feature enabled, Nightly supports the JPEG XL (JXL) format. This is an enhanced image file format that supports lossless transition from traditional JPEG files. See bug 1539075 for more details.

7개월 전discuss

"refused to load whatever distro I tried from SSD" sounds very much like a feature in AMI InsydeH2O firmware (and possibly others) where-by one has to manually "trust" the boot-loader file the boot menu entry points to. This doesn't seem to apply to Microsoft Windows boot loaders so I've always assumed the signing certificate is checked directly against the MS UEFI CA root rather than the intermediate 3rd party certificate that is used by Microsoft to sign distro shim files.

I have kept a screenshot of the firmware setup for years to remind me where the option can be found; looking at it now:

menu: Security > "Select UEFI file as trusted"

That would bring up a file-chooser where one can navigate the files in the EFI System Partition and select the distro's initial boot-loader file. For example, for a Debian install it would either or both of:

/EFI/debian/shimx64.efi /EFI/debian/grubx64.efi

8개월 전discuss

Two devices I use - both running Debian, and both being open-source hardware to some degree or other:

PC Engines APU2, AMD x86_64, 4-core, 4GiB, 3x Gigabit Ethernet, 3 x mini PCIe, SIM slot, USB 3, Serial, SATA ports. Mine has dual band WiFi in one mPCIe, SSD in another.

Turris Mox, Marvel aarch64. This can expand via plug and go via a range of extension modules. I've got one with 25 Gigabit (3 x 8-port modules) Ethernet, 1 x SFP, 5 x USB3, Wifi, Serial.

8개월 전discuss

This reminds me of a recent discussion about using a tarpit for A.I. and other scrapers. I've kept a tab alive with a reference to a neat tool and approach called Nepenthes that VERY SLOWLY drip feeds endless generated data into the connection. I've not had an opportunity to experiment with it as yet:

https://zadzmo.org/code/nepenthes/

9개월 전discuss

Have you checked out the The National Museum of Computing (TNMoC) archive. Last time I was there they had a rather good magazine collection going back to the early 1980s. It may be worth a call. I see they have an (incomplete) online catalogue:

https://www.tnmoc.org/library-archive

12개월 전discuss

When using LVM one can use the dm-integrity target to detect data corruption.

12개월 전discuss

When using LVM there is no need to use separate mdadm (MD) based RAID - just use LVM's own RAID support.

I have a workstation with four storage devices; two 512GB SSDs, one 1GB SSD, and one 3TB HDD. I use LUKS/dm_crypt for Full Disk Encryption (FDE) of the OS and most data volumes but two of the SSDs and the volumes they hold are unencrypted. These are for caching or public and ephemeral data that can easily be replaced: source-code of public projects, build products, experimental and temporary OS/VM images, and the like.

  dmsetup ls | wc -l

reports 100 device-mapper Logical Volumes (LV). However only 30 are volumes exposing file-systems or OS images according to:

  ls -1 /dev/mapper/${VG}-* | grep -E "${VG}-[^_]+$" | wc -l

The other 70 are LVM raid1 mirrors, writecache, crypt or other target-type volumes.

This arrangement allows me to choose caching, raid, and any other device-mapper target combinations on a per-LV basis. I divide the file-system hierarchy into multiple mounted LVs and each is tailored to its usage, so I can choose both device-mapper options and file-system type. For example, /var/lib/machines/ is a LV with BTRFS to work with systemd-nspawn/machined so I have a base OS sub-volume and then various per-application snapshots based on it, whereas /home/ is RAID 1 mirror over multiple devices and /etc/ is also a RAID 1 mirror.

The RAID 1 mirrors can be easily backed-up to remote hosts using iSCSI block devices. Simply add the iSCSI volume to the mirror as an additional member, allow it to sync 100%, and then remove it from the mirror (one just needs to be aware of and minimising open files when doing so - syncing on start-up or shutdown when users are logged out is a useful strategy or from the startup or shutdown initrd).

Doing it this way rather than as file backups means in the event of disaster I can recover immediately on another PC simply by creating an LV RAID 1 with the iSCSI volume, adding local member volumes, letting the local volumes sync, then removing the iSCSI volume.

I initially allocate a minimum of space to each volume. If a volume gets close to capacity - or runs out - I simply do a live resize using e.g:

  lvextend --resizefs --size +32G ${VG}/${LV}

or, if I want to direct it to use a specific Physical Volume (PV) for the new space:

    lvextend --resizefs --size +32G ${VG}/${LV} ${PV}

One has to be aware that --resizefs uses 'fsadmn' and only supports a limited set of file-systems (ext*, ReiserFS and XFS) so if using BTRFS or others their own resize operations are required, e.g:

  btrfs filesystem resize max /srv/NAS/${VG}/${LV}

To expand on this with an example. Adding a new device we'll call sdz to an existing Logical Volume Manager (LVM) Volume Group (VG) called "NAS" such that all the space on sdz is instantly available for adding to any Logical Volume (LV):

  pvcreate /dev/sdz
  vgextend NAS /dev/sdz

Now we want to add additional space to an existing LV "backup":

  lvextend --size +128G --resizefs NAS/backup

*note: --resizefs only works for file-systems supported by 'fsadmn' - its man-page says:

"fsadm utility checks or resizes the filesystem on a device (can be also dm-crypt encrypted device). It tries to use the same API for ext2, ext3, ext4, ReiserFS and XFS filesystem."

If using BTRFS inside the LV, and the LV "backup" is mounted at /srv/backup, tell it to use the additional space using:

  btrfs filesystem resize max /srv/backup

I have a wake-alarm[0] that triggers 30 minutes before civil twilight, that is roughly 60 minutes before local sunrise.

In the northern hemisphere at 52 degrees it gets earlier by about 2 minutes each day (additional 4 minutes of daytime).

So I get more sleep and short days in winter and less sleep and longer days in summer. It's liberating basing schedule on it and not some arbitrary time.

[0] https://f-droid.org/packages/com.forrestguice.suntimeswidget...