Posted by jpluimers on 2018/01/22
This actually is become more and more of a problem, so any hints to handle situations like this are more than welcome.
The problem is that my mentally retarded brother found this out all by himself some 18 months ago, which makes it extremely hard to coach him and be his custodian.
Source: [WayBack] #lifehack Source: @sindresorhus on Twitter – Jeroen Wiert Pluimers – Google+
Via: [WayBack] #lifehack Source: @sindresorhus on Twitter – Jan Wildeboer – Google+
–jeroen
Posted in About, LifeHacker, Personal, Power User | Leave a Comment »
Posted by jpluimers on 2018/01/22
Clonezilla is a nice partition cloning tool, but sometimes booting it just gives you this message on the screen:
overlayfs missing workdir
As it’s the first message during boot, searching for clonezilla “overlayfs missing workdir” returns no meaningful results towards the top of the list.
From what I could trace back from the search results is that somewhere before 2.4.x this started to happen in the “stable” branch.
There are actually two branches that in practice are stable on the http://clonezilla.org/downloads.php:
-yakketty)I think because of the naming, people usually start downloading the stable version. That doesn’t boot on most of the physical and virtual machines I’ve tried.
In my experience however, alternative stable doesn’t suffer from the overlay missing workdir issue on all the physical and virtual machines I’ve tried booting it with so far.
So I did some digging:
alternative stable is often referred to a alternative but it’s an Ubuntu-based branch running the same clonezilla software as the stable branchstable is the Debian-based branch.–jeroen
Posted in *nix, Debian, Power User, Ubuntu | Leave a Comment »
Posted by jpluimers on 2018/01/22
What I reboot three times is true.
[WayBack] How can I reset a PC if I forgot the administrator password? – The Old New Thing:
There is an emergency reset button that you can activate like this:
- Turn off the computer.
- Turn on the computer, but while it is booting, turn off the power.
- Turn on the computer, but while it is booting, turn off the power.
- Turn on the computer, but while it is booting, turn off the power.
- Turn on the computer and wait.
After three failed reboot attempts, Windows goes into recovery mode and one of the options there is to reset the computer. One of the reasons for that option is to address this specific problem of finding an old machine that you forgot the password to, and you want to just reset the PC and start over clean.
–jeroen
Posted in Development, Power User, Software Development, The Old New Thing, Windows, Windows Development | Leave a Comment »
Posted by jpluimers on 2018/01/20
As I keep forgetting the Notifications – Google+ URL and G+ kills “older” notifications: https://plus.google.com/notifications/all
–jeroen
Posted in G+: GooglePlus, Google, Power User, SocialMedia | Leave a Comment »
Posted by jpluimers on 2018/01/20
Before upgrading Tumbleweed this week, you need to review your openssh config.
This is not mentioned in Review of the week 2018/03 – Dominique a.k.a. DimStar (Dim*), but very important.
So be sure to read these before upgrading:
If you forget to review /etc/ssh/sshd_config, you get this in journalctl if you have specified your own MACs for instance when hardening according to [WayBack including rimemd160] Secure Secure Shell:
Posted in *nix, *nix-tools, Communications Development, Development, Internet protocol suite, Power User, SSH, TCP | Leave a Comment »
Posted by jpluimers on 2018/01/19
To get started:
Pictures, binary driver image from Index of /pdf/apple/nubus/asante/MacCon_SE30
Index of /pdf/apple/nubus/asante/MacCon_SE30
Apache/2.4.18 (Ubuntu) Server at bitsavers.trailing-edge.com Port 80
Name Last modified Size Description
Parent Directory – 5000118-00-01.BIN 2018-01-11 10:16 16K Asante_MacCon_SE30_1.JPG 2018-01-10 14:24 545K Asante_MacCon_SE30_2.JPG 2018-01-10 14:24 418K Asante_MacCon_SE30_3.JPG 2018-01-11 10:17 573K Asante_MacCon_SE30_4.JPG 2018-01-11 10:17 543K Asante_MacCon_SE30_5.JPG 2018-01-11 10:17 439K Farallon_SI_A_Series_b.JPG 2018-01-11 10:17 438K Farallon_SI_A_Series_f.JPG 2018-01-11 10:17 637K
–jeroen
Posted in Apple, Classic Macintosh, History, Macintosh SE/30, Power User | Leave a Comment »
Posted by jpluimers on 2018/01/19
I learned about mtr via [WayBack] Bufferbloat Demystified – Andrew Clunis which I found via [WayBack] Älterer Artikel, der Bufferbload und https://en.wikipedia.org/wiki/CoDel erklärt. – Kristian Köhntopp – Google+
mtr is cool:
mtr combines the functionality of the ‘traceroute’ and ‘ping’ programs in a single network diagnostic tool.
Running it, I saw occasional bold lines that were not mentioned in the README, but after a search in the repo I found it to be in documented NEWS:
Draw names in red (GTK) or bold (Curses) if host doesn’t respond.
Some times from here across to California back when I still had ADSL:
Posted in *nix, *nix-tools, Power User | Leave a Comment »
Posted by jpluimers on 2018/01/19
This one helped me to fix a 0x80243004 error: somehow the virtual network adapter didn’t work well and a reboot worked.
Use our guided walk through to help you resolve Windows Update issues using the error code you got while updating your version of Windows.
Source: Fix Windows Update errors
–jeroen
Posted in Power User, Windows, Windows 7 | Leave a Comment »
Posted by jpluimers on 2018/01/18
For the love of math and physics science [WayBack] Backreaction: Pure Nerd Fun: The Grasshopper Problem.
Background material and videos:
–jeroen
Posted in LifeHacker, Power User, science | Leave a Comment »
Posted by jpluimers on 2018/01/17
Thanks for the excellent comment explaining how to use hardware tokens as a comment to [WayBack] Using hardware security tokens cross-platform is only slightly more complicated than piloting a Space Shuttle. ##sarcasm – Jan Wildeboer – Google+
Jan Wildeboer:
+Jeroen Wiert Pluimers OK. Let’s look a bit at how this works. There are several competing standards/ways to use a security token. Typically you’ll decide between the two most used ones. As a CCID device AKA SmartCard with OpenSC or using gpg-agent. And that’s an either/or question. Some of the security tokens can only work with gpg-agent, some can do both (but not at the same time) and some are only useful as CCID style (e.g. the Nitrokey HSM).
OK. So now we look at platforms. CCID using OpenSC mostly works everywhere, but you might need to install some additional software depending on your OS. Older versions of MacOS X were notoriously bad, since (High) Sierra it has become better.
On Linux it again really depends. The gnome-keyring-agent that is active in a Gnome session really messes everything up, so better deactivate that. Which is not really trivial. But you have to have a socket for ssh-agent to pick up the key, so some stuff goes to your .bash.rc and you have to make some changes to Gnome config.
If you want to use a Yubikey for 2FA, note that it cannot do TOTP (Time based One Time Password) which Amazon wants for AWS auth. So you need another helper app on your computer.
Here’s some articles that explain it in detail:
- Using a Yubikey in CCID for ssh: [WayBack] Yubikey 4 for SSH with physical presence proof
- Using a Yubikey for gpg and ssh in gpg-agent mode: [WayBack] Yubikeys for SSH Auth | EngineerBetter | More than Cloud Foundry specialists
- Using a Yubikey for 2FA: [WayBack] Yubikeys for Two-Factor Auth | EngineerBetter | More than Cloud Foundry specialists
- Yubikey, SSH, gpg and Fedora [WayBack] GPG, Smartcard and ssh – Harald Hoyer
The middle two links are actually part of the series [WayBack] Yubikey All The Things | EngineerBetter | More than Cloud Foundry specialists which has a third post [WayBack] Yubikeys for Static Secrets | EngineerBetter | More than Cloud Foundry specialists
–jeroen
Posted in *nix, *nix-tools, Communications Development, Development, Internet protocol suite, Power User, Security, SSH, TCP | Leave a Comment »
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The Wiert Corner - irregular stream of stuff 
