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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.
Old

Bash variables storing the output of commands run them at each variable statement, not just at some eventual invocation

Posted 08-10-2016 at 04:30 PM by the dsc (linux-related notes)
Updated 08-10-2016 at 04:33 PM by the dsc
Tags bash

Meaning that a script line such as:

nowstatus=`mpc | grep '#' | cut -d '/' -f1`

Is running mpc, grep and cut at its very statement, not only from an eventual "echo $nowstatus".

Therefore, in scripts that parse differently the same output of a given command, it may be preferable to first store this output in a temporary file, and then parse this file rather than running the same command several times. Such as in the lines added below their equivalent...
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Posted in Uncategorized
Views 105 Comments 0 the dsc is offline
Old

Tiny optimizations that you might forget every time you (re)install linux

Posted 06-18-2016 at 03:29 PM by the dsc (linux-related notes)

I don't (re)install that often, so I completely forgot there were some types video-acceleration options that could be set in a tiny xorg.conf to speed things up a little. Fortunately it's a paralell install to one I'm sort of abandoning, so I still have it:

Code:
Section "Device"
        Identifier "Intel Graphics"
        Driver "intel"
        Option "AccelMethod" "sna"
#	   Option      "TearFree"
...
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Posted in Uncategorized
Views 314 Comments 0 the dsc is offline
Old

Chromium/chrome adobe flash player. That was confusing

Posted 06-18-2016 at 02:47 PM by the dsc (linux-related notes)

I was trying to install flashplayer on chromium by symlinking with chrome's flashplayer, then I found out that you actually need to point out as flags something like "flashplayerpath=path" and also a version flag for some reason. Somewhere it was suggested that you could add it to a /etc/chromium-browser/default file that exists, and by deafult does nothing, but has a "CHROMIUMFLAGS" variable "set as empty".

Then I came up with a grep/sed line to get...
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Posted in Uncategorized
Views 257 Comments 0 the dsc is offline
Old

KDE5 manual bug fixes for Dolphin5 and ark service menus

Posted 06-02-2016 at 02:15 PM by the dsc (linux-related notes)
Updated 06-02-2016 at 02:22 PM by the dsc

Source:
Quote:
As posted on http://www.linuxgnut.com/dolphin-ext...n-kubuntu-1510 this is a practical fix for the problem:
sudo ln -s /usr/share/kde4/servicetypes/konqpopupmenuplugin.desktop /usr/share/kservicetypes5/

And manually added service menu files must be loaded with the command [/b]kbuildsycoca5[/b].


Makes me wonder how that "KDE trinity", "Mate for KDE3" thing is going on.
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Posted in Uncategorized
Views 193 Comments 0 the dsc is offline
Old

["SOLVED"] Weird failure in bash string comparison

Posted 05-02-2016 at 01:43 AM by the dsc (linux-related notes)
Updated 05-02-2016 at 01:52 AM by the dsc

A string produced by a given command is somehow different from a string produced by "catting" a file produced by redirecting the output of the very same command. That's weird, if you ask me.

The "solution" is not to compare them both, but create a second file from the "same" redirection, and then strings from "catting" those files. Then the comparison won't always say the strings are different.

Code:
#!/bin/bash
apps=$(ps -axo
...
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Posted in Uncategorized
Views 134 Comments 0 the dsc is offline

  



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