LinuxQuestions.org - Michael Uplawski

[vim] avoid accidental maro recording (@q)

Posted 11-06-2021 at 07:02 AM by Michael Uplawski
Updated 11-13-2021 at 01:42 AM by Michael Uplawski

in ~/.vimrc I note

Code:

nnoremap Q q
nnoremap q <Nop>

and no longer end up in macro-recording mode, when I forget the colon before 'q'.

Copied & pasted from Stack Overflow (see there).

Michael Uplawski

Senior Member

Posted in Wisdom caught up with me, though I am running fast.

Views 52 Comments 0 Michael Uplawski is offline

Unbuffered shell-input

Posted 10-16-2021 at 02:46 AM by Michael Uplawski
Updated 11-13-2021 at 01:43 AM by Michael Uplawski (Wrong title, much misunderstanding and ill-chosen search criteria.)

There are solutions on the Web.

Having read some of these, I prefer a Ruby-Oneliner “readNB” which returns the 1 character that the user has had a chance to enter on the keyboard, before readNB returns.

---------------------- In the meantime -------------------------
GazL has – in the very first comment on this blog, below – presented a better solution with the shell built-in command read: read accepts some parameters and a call like

Code:

read -r -s -N1 [VARIABLE]

...

Michael Uplawski

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Posted in Wisdom caught up with me, though I am running fast.

Views 846 Comments 4 Michael Uplawski is offline

Ruby: reading from STDIN, if there is something to read.

Posted 09-25-2021 at 02:11 AM by Michael Uplawski
Updated 10-09-2021 at 12:49 AM by Michael Uplawski (Category)

The logic of ARGV and ARGF still escapes me, I am approaching perfection empirically by trial, error and surrender. Now I believe to do stuff the right way, which is highly unsatisfactory.

Today's sura goes like this:

To avoid a hanging program, when there are no data waiting at STDIN, thou shalt write

Code:

if !STDIN.tty?
  # do as you must
end

tty meaning “teletype-writer”, it stands for terminal/console/pseudo-terminal and the like....

Michael Uplawski

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Posted in Incomprehension and Antagonism, Programming and creativity

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Email Filter With Procmail: Filter Received-Headers By IP-Range

Posted 07-12-2021 at 04:02 PM by Michael Uplawski
Updated 09-27-2021 at 10:46 AM by Michael Uplawski (missing words and letters ... this no good, wrong words, too. Even worze.)

A styled version of this text in French: http://www.uplawski.eu/articles/Linu..._Procmail.html
EDIT (27/09/2021): write positive test results to the procmail log-file

Introduction

I have not found much insight on the Web about the feasibility of an idea that I have had many years ago, but then had forgotten for a while:

Filter email by Received-header, if the IP-address in this header belongs to a specific range of IP-addresses.

...

Michael Uplawski

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Posted in Boundless Praise

Views 401 Comments 0 Michael Uplawski is offline

False statement

Posted 03-23-2021 at 01:57 AM by Michael Uplawski
Updated 11-13-2021 at 01:44 AM by Michael Uplawski

Tags doubt, neuroscience, pseudo-science

I just modified my comment to one of my own blog-entries but now feel that it is itself worth an entry.

If it sticks it may be sticky. Avoid.

This comment contained a false statement. I have to leave it here and mark it as false, because it is frequently repeated in a pseudo-scientific context, by right-wing political activists, by marketing-experts, by so-called “coaches”.

The story is that, around 1955, an American scientific formulated a hypothesis which was

...

Michael Uplawski

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Posted in Incomprehension and Antagonism, Wisdom caught up with me, though I am running fast.

Views 648 Comments 2 Michael Uplawski is offline

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