Posted by jpluimers on 2020/07/07
About 2 years ago, over the course of almost a year, many Spectre vulnerabilities were found.
In November 2018, this lead many people disabling Hyper Threading: [WayBack] STIBP by default.. Revert?
This is a reminder to self to look back at Spectre to get a better historic feel for it.
Via: [WayBack] Work is being done on the Linux Kernel mailing list about further exploits of the Spectre Family of Exploits. The mitigations are bad – basically, you c… – Kristian Köhntopp – Google+
–jeroen
Posted in Development, Power User, Security, Software Development | Leave a Comment »
Posted by jpluimers on 2020/07/06
Two tools I like:
GrandPersctive is good at showing a visual overeview. OmniDiskSweeper is better at gradually drilling down.
Easy installation:
$ brew install caskroom/cask/omnidisksweeper
$ brew install caskroom/cask/grandperspective
–jeroen
Posted in Apple, Mac OS X / OS X / MacOS, Power User | Leave a Comment »
Posted by jpluimers on 2020/07/06
[WayBack] RB450G and “..could not get answer from dns server” – MikroTik: I do not see a default route. It would be the route with “dst-address=0.0.0.0/0“.
–jeroen
Posted in Internet, MikroTik, Power User, routers | Leave a Comment »
Posted by jpluimers on 2020/07/06
[WayBack] lifeliners volgen – P2000 monitor (support forums):
–jeroen
Posted in LifeHacker, Power User | Leave a Comment »
Posted by jpluimers on 2020/07/03
[WayBack] AppCleaner helped me get rid of a the gazillion number of versions that GoToMeeting had silently installed and their dependencies.
Gigabytes recovered.
Installing is easy: $ brew install caskroom/cask/appcleaner
AppCleaner is a small application which allows you to thoroughly uninstall unwanted apps.
Installing an application distributes many files throughout your System using space of your Hard Drive unnecessarily.
AppCleaner finds all these small files and safely deletes them.Simply drop an application onto the AppCleaner window. It will find for the related files and you can delete them by clicking the delete button.
–jeroen
Posted in Apple, Mac OS X / OS X / MacOS, Power User | Leave a Comment »
Posted by jpluimers on 2020/07/03
A while ago, I had to mass encrypt a lot of directories and files on Windows for some directories in an existing directory structure.
This helped me to find out which ones were already done (it lists all encrypted files on all drives; the /n ensures the files or encryption keys are not altered):
cipher.exe /u /n /h
This encrypted recursively in one directory B:\Directory:
cipher /D /S:B:\Directory /A
It also has options to wipe data (/W), export keys into transferrable files (/X) and many more.
If you like the Windows Explorer more then to encrypt/decrypt (it is a tedious process): [WayBack] How do I encrypt/decrypt a file? | IT Pro.
Via:
–jeroen
Posted in Encryption, NTFS, Power User, Security, Windows | Leave a Comment »
Posted by jpluimers on 2020/07/03
A friend asked me what tools I use for downloading media, converting it to various formats (including audio extraction) and audio editing.
It is a surprisingly short list:
Most of it runs out of the box on Mac OS X/MacOS/OS X, as I’ve moved there form Windows for most of my day to day access to systems (there is a great set of Microsoft Remote Desktop in the app store: [Archive.is] Microsoft Remote Desktop 8.0 on the Mac App Store and [Archive.is] Microsoft Remote Desktop 10 on the Mac App Store; I like the first one better).
Posted in Apple, Audacity, Audio, ffmpeg, iMac, Mac, Mac OS X / OS X / MacOS, MacBook, MacBook Retina, MacBook-Air, MacBook-Pro, MacMini, Media, Power User, Remote Desktop Protocol/MSTSC/Terminal Services, SocialMedia, Windows, YouTube, youtube-dl | Leave a Comment »
Posted by jpluimers on 2020/07/01
[WayBack] The ever so lovely Bézier curve – Freya Holmér – Medium:
Bézier curves are, to me, one of the best examples of mathematical beauty
Based on:
Via: [WayBack] Bezier curves, how do they even work – Kristian Köhntopp – Google+
–jeroen
Posted in Development, Power User, science, Software Development | Leave a Comment »
Posted by jpluimers on 2020/06/30
The first hit of pdf binary to text – Google Search was [WayBack] binaryfiles – How to convert PDF binary parts into ASCII/ANSI so I can look at it in a text editor? – Stack Overflow has many options including:
Since I have qpdf installed on most systems:
Another useful tool to transform a PDF into an internal format that enables text editor access is
qpdf. It is a “command-line program that does structural, content-preserving transformations on PDF files”.Example usage:
qpdf \ --qdf \ --object-streams=disable \ input-with-compressed-objects.pdf \ output-with-expanded-objects.pdf
- The output of the
QDF-mode enforced by the--qdfswitch organizes and re-orders the objects neatly. It adds comments to track the original object IDs and page content streams. All object dictionaries are written into a “normalized” standard format for easier parsing.- The
--object-streams=disablecauses the extraction of (otherwise not recognizable) individual objects that are compressed into another object’s stream data.
The recompress is easy as per [WayBack] QPDF Manual:
qpdf /tmp/uncompressed.pdf /tmp/compressed.pdf
The answer is by [WayBack] User Kurt Pfeifle – Stack Overflow who has many other interesting PDF related answers at:
Stackoverflow.com:
- My SO answers to [PDF]-tagged questions
- My SO answers to [Ghostscript]-tagged questions
- My SO answers to [ImageMagick]-tagged questions
Superuser.com:
Serverfault.com:
–jeroen
Posted in Development, EPS/PostScript, PDF, Power User | Leave a Comment »
Posted by jpluimers on 2020/06/30
For a long time, it is advised against to curl | sudo sh or equivalent:
Because you are giving root access to whatever script you are executing. It can do a wide variety of nasty things.
By far the most irresponsible use of curl | sh is to use it with plain, unauthenticated, insecure HTTP instead of HTTPS. This is because it’s not only possible, but also increasingly likely, that the connection over which the shell script is delivered could have its contents silently modified by anyone in network position between the vendor and the installer—especially if you’re using public Wi-Fi. (If you don’t believe this is a real risk, consider that some companies’ business models revolve around modifying JavaScript delivered over HTTP in-transit—and anyone can hijack Wi-Fi with inexpensive, easy-to-obtain devices.)
So I’m surprised that companies still run content – include JavaScript – over an insecure http transport channel in their customers IDE instances.
Many developers run their IDE as Administrator, but even as regular user this is a large security risk: the transport layer is the easiest to hack and will eventually be hacked.
One such occasion was [WayBack] Delphi 10.2.3: Tools > Options Click OK = Script Error I have another weird situation with Delphi 10.2.3. Anytime I open up the options and click OK I … – Michael Riley – Google+ .
That one actually showed the script executed, but normally you do not see it happening at all.
So my advice:
Run the web-traffic from your development machines over a web-proxy like HTTP Fiddler, then disable all http based scripts.
–jeroen
Line 73: https://gist.github.com/jpluimers/40a60ca1e07bb91fa337ecfebe314d64#file-cf-common-js-L73
Posted in Development, Power User, Security, Software Development | Leave a Comment »
The Wiert Corner - irregular stream of stuff 