Posted by jpluimers on 2020/06/02
I hardly do this, so I tend to forget that unset -f functionname deletes a function and unset variablename or unset -v variablename deletes a variable.
From:
I have done this:bash $ z() { echo ‘hello world’; }How do I get rid of it?
Source: [WayBack] How do I delete a Bash function? – Stack Overflow
Reference: [WayBack] unset Man Page – Bash – SS64.com
–jeroen
Posted in *nix, *nix-tools, bash, bash, Development, Power User, Scripting, Software Development | Leave a Comment »
Posted by jpluimers on 2020/06/01
Cool: [WayBack] GitHub – kzahel/web-server-chrome: An HTTP Web Server for Chrome (chrome.sockets API)
This allows you to develop HTTP applications that live in Chrome:
[Archive.is1/Archive.is2] Web Server for Chrome – Chrome Web Store: A Web Server for Chrome, serves web pages from a local folder over the network, using HTTP. Runs offline.
Of course you could to python -m SimpleHTTPServer 8888 or python -m http.server 8888, but this runs within chrome and can be used from inside JavaScript projects.
Features
- serve local files
- configure listening port
- configure listening interface (e.g. localhost or all interfaces)
- custom http handlers possible
- websocket support available
- works nice with chrome.runtime.onSuspend
- options for autostart, start in background, etc etc.
- handles range requests, HEAD, etc
- options for CORS
- optional PUT, DELETE request (for upload files)
- sets MIME types
- can render directory listing
- See relevant options: https://github.com/kzahel/web-server-chrome/blob/master/polymer-ui/options.js
Via [WayBack] This is super useful: A# web #server that runs in #Chrome! Makes it super easy to do local web dev without the hassle of setting up a complex back end s… – Jason Mayes – Google+
–jeroen
Posted in Chrome, Development, Google, JavaScript/ECMAScript, Power User, Scripting, Software Development, Web Development | Leave a Comment »
Posted by jpluimers on 2020/06/01
A few links on Logitech remotes for presenters.
I like how the spotlight can highlight portions of the screen, but I wish it had the LCD display timer of the R800 and R700.
The big problem of the Spotlight seems to be the stability of the Logitech software, both on Windows and on MacOS.
The R series (R800/R700/R500/R400) have lasers that do not reflected well by modern big screens.
A great review of the various presenters is at [WayBack] What’s the Best Logitech Pointer? – R400 vs R700 vs R800 – Sky Tech Lasers.
More background reading at
--jeroen
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Posted by jpluimers on 2020/06/01
A while ago, I had a problem that one of my Raspberry Pi machines hadn’t been turned on for a while, so after a reboot the clock was way off.
This resulted in errors like the below: SEC_ERROR_OCSP_FUTURE_RESPONSE errors indicating the TLS certificates being not yet valid (and numerous other TLS certificate issues).
The /etc/ntp.conf was OK, and rcntpd status indicated the service was running. Looking at /var/log/ntp.log I saw a few syncing issues:
11 Feb 20:04:15 ntpd[1419]: receive: Unexpected origin timestamp 0xde15bc7f.59622c55 does not match aorg 0000000000.00000000 from server@93.94.224.67 xmt 0xde2b122f.0d222048
11 Feb 20:04:15 ntpd[1419]: receive: Unexpected origin timestamp 0xde15bc7f.595fec0e does not match aorg 0000000000.00000000 from server@213.154.236.182 xmt 0xde2b122f.0dc06af7
11 Feb 20:04:15 ntpd[1419]: receive: Unexpected origin timestamp 0xde15bc7f.595d4584 does not match aorg 0000000000.00000000 from server@149.210.199.182 xmt 0xde2b122f.0df70400
My guess was that the time was so much of (more than a month) that syncing would not work, so a manual force was needed.
[Archive.is] Force NTP Time Update on Linux | KrazyWorks provides two solutions:
sntp -r pool.ntp.org
# or
ntpdate -u pool.ntp.org
Only the last one works; I’m not sure why yet:
daisy:/etc # ntpdate -u pool.ntp.org
15 Mar 19:20:59 ntpdate[2516]: step time server 131.211.8.244 offset 4140423.716209 sec
Further reading:
–jeroen
SEC_ERROR_OCSP_FUTURE_RESPONSE
Posted in *nix, *nix-tools, ntpdate, Power User | Leave a Comment »
Posted by jpluimers on 2020/06/01
Just in case [Archive.is] How to Reassemble the Hangers lands in bit-heaven:
How to Reassemble the Hangers
instructions to reassemble them:
- Hold the two parts in your hand (as shown in Picture 1).
- Insert the thinner hook of the right part into the slot at the end of the left hook (Picture 2).
- Push the right hook into the slot counterclockwise until it’s all the way in (Picture 3).
- Turn the right part clockwise until the two arms meet (Picture 4).
- The hanger is fully reassembled (Picture 5).
–jeroen
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Posted by jpluimers on 2020/05/29
Interesting: some PowerShell scripts that pipe a user and password through cmdkey.exe /generic:TERMSRV/$Computer /user:$User /pass:$Pass
–jeroen
Posted in *nix, Development, Linux, Power User, Software Development | Leave a Comment »
Posted by jpluimers on 2020/05/29
Even though the below link is to a draft post, it sill provides quite some guidance on how to use RRD graphs in an MRTG environment.
[WayBack] rrdtool: MRTG next level graphing | Syed Jahanzaib Personal Blog to Share Knowledge !
–jeroen
DRAFT VERSION: This is incomplete Post ! Some points may be missing, I will update them later .. We all know what is MRTG. You can graph so many information including temperature humidity, speed, v…
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Posted by jpluimers on 2020/05/29
For my research list: [WayBack] Getting rid of Docker plain text credentials – Hacker Noon
Repository at [WayBack] GitHub – docker/docker-credential-helpers
–jeroen
Posted in *nix, *nix-tools, Cloud, Containers, Docker, Infrastructure, Power User | Leave a Comment »
Posted by jpluimers on 2020/05/28
Cool stuff: TOP 10 CD/DVD/Floppy Drives based Projects – YouTube.
Via:
–jeroen
Posted in Development, Hardware Development, LifeHacker, Power User | Leave a Comment »
Posted by jpluimers on 2020/05/28
It can run [WayBack] RASPPLE II: A2CLOUD, A2SERVER, Apple II Pi for Raspberry Pi
Lot’s of videos below, all by David Schmenk https://www.youtube.com/user/dschmenk/videos
Via:
–jeroen
Posted in *nix, *nix-tools, //e, 6502, Apple, Apple ][, Development, Hardware Development, Hardware Interfacing, History, Power User, Raspberry Pi, USB | Leave a Comment »
The Wiert Corner - irregular stream of stuff 