LinuxQuestions.org - Uncategorized

Just annotations of little "how to's", so I know I can find how to do something I've already done when I need to do it again, in case I don't remember anymore, which is not unlikely. Hopefully they can be useful to others, but I can't guarantee that it will work, or that it won't even make things worse.

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[MYSTERY SOLVED] What does "echo ???????????????" really do?

Posted 04-20-2016 at 08:39 PM by the dsc (linux-related notes)
Updated 04-21-2016 at 05:07 PM by the dsc

It seems to alternate between listing an Nth file (somewhat obscurely related with the number of question marks) on the current folder, or giving some "history" entry, I guess.

That's weird.

Code:

22:54 **ROOT** /# echo ?
?
22:54 **ROOT** /# echo ??
??
22:54 **ROOT** /# echo ???
bin dev etc lib mnt opt run smb srv sys tmp usr var
22:55 **ROOT** /# echo ????
boot home proc root sbin
22:55 **ROOT** /# echo ?????

...

the dsc

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[WORK-AROUND] Bug on dragging windows of KDE/QT apps under openbox

Posted 04-12-2016 at 05:54 PM by the dsc (linux-related notes)
Updated 04-12-2016 at 05:56 PM by the dsc

Tags bug, kde, openbox

If you accidentally (or not) click/hold and drag the left mouse button from the inner area ("client" or "any empty area") in a KDE/QT window, it starts to be dragged/moved along, but it's not dropped when you release the button, unlike the behavior with GTK windows (at least GTK2, I guess). You got to press "enter" or "esc", I guess.

Presumably that doesn't happen under KDE proper/kwin, maybe not even with other window managers, but I didn't...

the dsc

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Disable the annoying command-not-found handler on Ubuntu

Posted 04-04-2016 at 06:17 PM by the dsc (linux-related notes)
Updated 04-04-2016 at 06:18 PM by the dsc

Add on .bashrc:

Code:

unset command_not_found_handle
alias cmdhelp=/usr/lib/command-not-found

So if it's just a typo there's no annoying mini-hang.

I'd rather have something like a "shopt -s safe-command-spell" thing than this, or at least as a first thing.

The alias is just in case you'd rather use for a command you thought you had installed. Sometimes the commands are under somewhat obscure package names, so it can...

the dsc

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It should be possible to add things like "while read $var" to "misspellings"/errors of spell/grammar checkers

Posted 03-31-2016 at 07:40 AM by the dsc (linux-related notes)

It would considerably reduce the odds of temporary insanity.

the dsc

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Mapping the tablet to monitor with the aid of an inkscape, plus fine-grained mouse accuracy

Posted 03-29-2016 at 06:05 PM by the dsc (linux-related notes)
Updated 03-29-2016 at 06:10 PM by the dsc

Tags mouse, tablet, wacom

I'm speaking of the wacom/genius/aiptek "drawing/writing" kind of tablets, not the "big smartphone", mini-PC-embedded-with-touchscreen type, even though cintiqs and the like blur the distinction a bit.

Without a GUI to actually map the correspondence between the tablet and monitor, one method is to first create an image that is just two rectangles: one representing the full area of your tablet, and another rectangle to the proportion you want to use of the tablet...

the dsc

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Views 1219 Comments 0 the dsc is offline

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