Blog
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message from my hoster: “ssh_exchange_identification: Connection closed by remote host”
- https://stackoverflow.com/questions/10127818/ssh-exchange-identification-connection-closed-by-remote-host-under-git-bash
- https://stackoverflow.com/a/15822474/3119172 – the only reasonable answer I read there:
I just ran into this today and it was because the server I was trying to connect to was overloaded with processing. So it may be possible that the server is low on memory or CPU starved.
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SSH on Windows: OpenSSH, PuTTY
- https://github.com/PowerShell/Win32-OpenSSH
- https://github.com/PowerShell/Win32-OpenSSH/wiki
- https://github.com/PowerShell/Win32-OpenSSH/wiki/ssh.exe-examples
- %USERPROFILE%\.ssh\config – ~/.ssh/config – it allows this notation even on Windows OpenSSH (and be aware of this: %USERPROFILE = “~”!):
- IdentityFile ~/.ssh/id_ed25519
- https://en.wikipedia.org/wiki/ssh-agent – SSH authentication agent
On Windows OpenSSH’s “SSH authentication agent” is meant to run as Windows “service“. Starting a couple of years back, Microsoft decided, to deactivate that service by default. Now there are corporations, that do not want to have the “ssh-agent” service running at all. No SSH authentication agent, no caching of ssh ID-s (after enquiring the respective passphrase) – i.e. you have to enter your passphrases again and again. Right: if you are a bad boy, you use private keys with empty passphrases – but you are not a bad boy, are you?
The alternative to OpenSSH on Windows:
- https://en.wikipedia.org/wiki/PuTTY – the PuTTY package has its own SSH authentication agent: pageant – and pageant does not run as (Windows) “service“, you can start it yourself, so PuTTY may be your choice.
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my LG 4K-UHD-Smart-TV
View Screen with Just Scan:
-> Settings Wheel -> “…” ->Picture -> Aspect Ratio -> Just Scan -> OnThis way the display OS does not remove edge lines and columns. That is needed, because e.g. in my case serious lines and columns get stolen, and I insist on seeing them.
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Secure Hash Algorithms AKA SHA – using shake-512sum for show-identical-files.sh
- https://en.wikipedia.org/wiki/Secure_Hash_Algorithms
- https://en.wikipedia.org/wiki/SHA-3 – “is the latest member of the Secure Hash Algorithm family of standards”
- https://en.wikipedia.org/wiki/SHA-2
- https://en.wikipedia.org/wiki/SHA-1
There is a book at O’Reilly’s:
- https://learning.oreilly.com/library/view/classic-shell-scripting/0596005954/ – “Classic Shell Scripting”
- https://learning.oreilly.com/library/view/classic-shell-scripting/0596005954/examples_page.html – the book comes with very nice supplemental files and examples
- one of these examples is: show-identical-files.sh
- you can find it there in the “sh” subdirectory
- that script makes use of md5sum as checksum utility, but in my copy I replaced it with sha512sum resp. shake-512sum
- that checksum utility makes that script decide, whether files are “the same”
- I have been using that script “almost every day of my life” for so many years for finding identical files having deliberate different names – it groups files by their checksums computed by this checksum utility
- this script has worked for me on Unix, Linux, macosx, …, and busybox
- I have no quicker and safer way to find copies of files – … and removing unnecessary copies
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Mastodon and Meta’s Threads in a common social media “fediverse” – impressive!
- https://en.wikipedia.org/wiki/Fediverse
- https://en.wikipedia.org/wiki/Mastodon_(social_network)
- https://en.wikipedia.org/wiki/Threads_(social_network)
- https://en.wikipedia.org/wiki/Threads_(social_network)#Possibility_of_open_interoperability
- https://mastodon.social/deck/@zuck@threads.net/112134819543015910 – Mark Zuckerberg’s first post in the fediverse – here: on the Mastodon server I am using
- https://www.threads.net/@zuck/post/C4yMa0Gxxph – Mark Zuckerberg’s first post in the fediverse – here: on Threads