How to create a consistent .config file to compile Linux kernel? - linux

To compile Linux kernel, I created a default .config file using make defconfig. Since I didn't want to browse thousands of options through a menu-driven interface (make menuconfig), I set CONFIG_KALLSYMS=n manually, and then triggered the build (make -j8). I noticed the build system overwrote my changes and set CONFIG_KALLSYMS=y again. I suspect there might be other options present in the configuration which rely on CONFIG_KALLSYMS. How can I create a consistent .config file without using any menu-driven interface?

It might be burdensome to browse thousands of options through a menu-driven interface (make menuconfig). When you only want to change a couple of options and don't remember where they are in the menu hierarchy, you can use search to find any specific option. Just press / (slash) and type the full or partial name of the option. The result of the search will show where the options are located in the menu hierarchy, and what are the dependencies. Save and exit after you are done with the changes, and you should have a consistent .config file.

After you create a .config using make defconfig, to change just a few config options after that "make menuconfig" is the best way to do this. It also tells you about the dependencies and doesn't allow you to make a change unless the dependencies are met.

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Compiling upstream kernel with my own .config file

I want to compile upstream kernel with my own .config file.
I copied this file to the root directory.
I run 'make oldconfig' but seems that no consideration on that file because the compiler ask me questions about the configuration and I want that all the configuration will take from the my .config file:
"Compile also drivers which will not load (COMPILE_TEST) [N/y/?] (NEW)"
The makefile (not compiler) is asking you those questions, because following options (as CONFIG_COMPILE_TEST) is not present in your .config file (since you moved your old config from older kernel to newer one). Thus, every new config option which is available in kernel, you need to set if you want it or not. If you don't want to use those new features, just in loop write n and enter. If you want to keep default value, just press enter until you check every new config option.

Is it possible to share SublimeText preferences *and* override one specific pref?

I share Sublime prefs between two machines (home, work) using Git.
My monitor at work has a higher DPI than my monitor at home, so in one of the two machines I'd like to override font_size.
I was hoping for:
The possibility to override using a command-line flag (to do something like subl --override-pref font_size=15), like kitty --override does.
Another level of prefs cascading below User.
, but I don't think any of this exists in Sublime. Language-specific config is not what I'm looking for, I want something global, but only in one of the two machines.
Ideas? Workarounds? Thanks.
The general mechanism at play for settings files is that when Sublime loads a sublime-settings file by name, it pulls all of the similarly named files across all of the known packages and combines them together (the same also happens for many other resource files) with content from later files overriding anything that appears in an earlier file.
The order that's imposed here is lexically by package, with Default always being first and User always being last. That's why the default settings are in the Default package and your custom settings are in the User package. Additionally syntax specific settings also apply (as do settings specific to projects).
Apart from this mechanism there's no direct way to override settings without some sort of manual intervention on your part. Potential solutions for this sort of problem include the following examples:
Don't sync the Preferences.sublime-settings file
If the file isn't synced across multiple machines, then this problem becomes moot because each machine can easily have it's own unique settings. The downside to that is that each machine then has it's own unique settings, which is a pain in the butt if you often move from machine to machine and things don't quite work the same way.
Use separate git branches
An alternative here if you're using git such as you are is to try and keep separate branches per host or per host type (like hi_dpi and reg_dpi or some such). Then on each machine check out the appropriate branch.
The obvious downsides here are having to try and cross-sync desired settings changes (for both User as well as any packages you might install) between branches, which is less than ideal unless you really love git.
Use extra Preferences.sublime-settings files
Here the idea is that you don't include the font_size setting in your User/Preferences.sublime-settings file at all. Instead, you use Browse Packages from the command palette to open the Packages folder, then create a new folder there with some arbitrary name. Inside of that folder include a Preferences.sublime-settings file that contains only the font_size setting.
Doing this on multiple machines, you can sync the settings in your User folder across machines without also syncing the preference that contains the font_size. As a note, if you create the file while Sublime is already running, you may need to quit and restart to get it to notice that the settings file exists; this only applies the one time, though.
Use a plugin
Looking at the link provided above, the ultimate trump card for any setting is a setting that's been applied directly to a view. Given that, you can use a plugin that selectively always applies a specific font size to any newly created or opened file:
import sublime
import sublime_plugin
import socket
class CustomFontListener(sublime_plugin.EventListener):
hostname = socket.gethostname()
def on_new(self, view):
if self.hostname in ("host1", "host1.example.com", "host2"):
view.settings().set("font_size", 20)
on_load = on_new
Now any time you open a file or create a new buffer, if the current hostname is in the list you've configured the view will immediately get an appropriate font_size applied; otherwise the one from the preferences would be used instead.
You could also extend this to be configurable via it's own settings file, apply a different font size depending on the host name, etc.
Settings in views are persisted in the sublime-session file and also in the workspace files associated with sublime-project files, so these settings will remain in place even across restarts.
Something to keep in mind is that the internal commands for changing the font size (via Preferences > Font or via the mouse wheel keyboard shortcuts) work by writing a new font_size to your user preferences.
If you're using separate preference files, then doing this will add font_size to your User settings and you will need to manually remove it and modify the other settings file.
If you're using the plugin, then these shortcuts won't seem to do anything because it applies a font_size that overrides the User preference, but in fact as outlined above your preferences file end up being changed and you may not notice right away.
So whichever way you go, if you tend to use those you may need to make manual adjustments to settings files in the aftermath. It's also possible to create smarter versions of those commands as well, if this is the sort of thing that happens often.

Where are package key-bindings?

I installed ColorPicker and it overwrote my key-binding (ctrl+shift+c). I'd like to change the ColorPicker binding to something else, however I'm unable to locate the definition.
If looked in Preferences > Package Settings > ColorPicker, but it only has Settings-Default and Settings-User neither of which contain the key-binding. I've also checked the Default & User key-bindings, to no avail.
How can I change the key-binding for ColorPicker?
Edit: Adding image of files for #OdatNurd
The definition for key bindings in a Sublime package come from the file Default (Platform).sublime-keymap, where Platform is one of Windows, Linux or OSX. Not all packages provide a menu entry for editing key bindings, though.
You can use PackageResourceViewer to open the file and see what the key binding is set to. You can modify the key directly in that file or copy it to your custom key bindings in your User package.
The latter is generally the better way to go because overriding a package file can cause problems when the package updates in the future; if it modifies a file that you have overridden, your override masks the package file which can potentially cause problems.
Sublime takes care to ensure that the User package is loaded last, so this is good place to put settings that you want to make sure don't get hoisted out from under you by packages.

where is Qt configuration file (qtrc) on Linux?

I have not found it in:
~/.config/Trolltech
~/.qt
~/.config/Nokia
where I should search for it?
It will depend on your system where exactly to find it. You could try running locate qtrc. Note that the locations this is going to find aren't necessarily the ones where you should make changes -- on my system, I only have a system-wide qtrc in /etc. For local changes, you should add a new one in your home directory. Again the particular location within your home directory will depend on your installation (in particular whether you're using Qt3 or Qt4).

Ignore file extensions only on my machine

My team lead just added a lot of binary files that shouldn't be in source control. I have to pick and choose my battles with him and this isn't one I think is worth bringing up, but I'd like to just ignore these files on my machine without affecting everyone elses. Is this possible?
We're using TortoiseSvn. I've honestly never used the command line so until I learn how to do that I would prefer a solution using the GUI. Thanks!
If all your files resides in a special directory, you could simply use the Add to ignore list from the shell-context menu.
From the settings/general tab you can also add global ignore patterns, based on extension.

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