Linux sucks: Xubuntu 14.04 on Asus G55VW

I would like to install Xubuntu to my notebook (G55VW). The most of things works fine, except FN-keys (FN-F4...FN-F6, yeah the LCD&keyboard brightness controls). I read many forums but most of way didn't get solution. I tried most of and here is my version:

1. get and install
https://github.com/guillaumezin/nvidiabl

Install:
sudo make  dkms-install

To remove:
sudo make dkms-remove
2. Update grub
vim /etc/defaults/grub
add "acpi_backlight=vendor" to cmdline
sudo update-grub2 && sudo reboot

3. reboot
Set brightness to the half of max.br:
echo -n 50 | sudo tee /sys/class/backlight/nvidia_backlight/brightness

4. Disable using of the profiles in nvidia-settings.


I had issue with Wireless:

sudo vim /etc/modprobe.d/iwlwifi.conf

options iwlwifi 11n_disable=1 

Block web-sites with BIND9

I'm skipping the installation and set up of the BIND9 because there are several other site that do it. I just explain how to configure named.conf to be able to block domains.

You'll need a 'null.zone.file' under etc folder:

; DNS NULL Zone File for host filtering

$TTL 36000
@ in  soa  localhost. postmaster.localhost. (
           0   ;serial
           0   ;refresh
           0   ;retry
           0   ;expiration
           0 ) ;minimum

; Zone NS records

@          NS localhost.
           A 127.0.0.1
*          IN A 0.0.0.0


Now see the named.conf:

options {
    directory "c:\bind9\etc";

    listen-on  { 127.0.0.1; };
    forwarders { 192.168.100.1;};
    #forwarders { 8.8.8.8; 8.8.4.4;};#if you would like to use Google DNS servers
    recursion yes;
    allow-transfer { none; };
};

logging{
    channel my_log{
        file "myconf.log" versions 3 size 2m;
        severity info;
        print-time yes;
        print-severity yes;
        print-category yes;
    };
    category default{
        my_log;
    };
};


key "rndc-key" {
    algorithm hmac-md5;
    secret "your secret key";
};

controls {
    #inet 127.0.0.1 port 953
    #allow { 127.0.0.1; } keys { "rndc-key"; };
    inet 127.0.0.1 allow { localhost; } keys { "rndc-key"; };
 };


zone "gemius.pl" {type master; notify no; file "null.zone.file";};
zone "adserver.yahoo.com" {type master; notify no; file "null.zone.file";};

Now the above website will be blocked and you experience a little more responsibility on web-sites.
Of course you can block unwanted web-sites.

TotalCmd Add new custom command

Hotkeys:
SHIFT+F4   create new file

I usually open GitBash. I made a hotkey combination to access faster:
Each config file located under c:\Users\YOURNAME\AppData\Roaming\GHISLER.

WINCMD.INI:

[Shortcuts]
CA+C=em_gitbash
CA+V=cm_ExecuteDOS

usercmd.ini:

[em_gitbash]
button=C:\Windows\System32\WScript.exe,2
cmd="C:\Program Files (x86)\Git\Git Bash.vbs"
path=C:\Windows\System32\

The path is set a location. Remove it if you would like to use at TCM's current folder.

Zyxel NSA325v2

If you met the following annoying message when you try to start htop on Zyxel NSA325v2:

Error opening terminal: xterm.

Here the quick fix:

export TERM="xterm"
export TERMINFO="/ffp/share/terminfo"

Useful commands

To create a patch:
$ diff -rupN orig new > diff.patch

To execute an '.sh' file under Git Bash:
cmd //c "cica.cmd arg1 arg2"

To change file mode bits in git:
$ git update-index --chmod +x cica.txt

Shell programming (Posix)

I had learn some shell programming basis. I summarized the things to here. I suggest you always try to follow the posix (easier to understand and you can avoid specific shell issues).

Rules (I continuously will update it):

1. Do not use pushd/popd! Use 'cd -'.
2. Do not use double equal to compare. This is not c++. Use just one ('=').
3. Do not use double bracket [[ $foo ]]. Use single bracket ('[ $foo ]').

Difference '$foo' and "$foo":
$export foo=cica
$echo "$foo"
cica
$echo "$foo"
$foo
There is substitution at first case while the other one there wasn't.

Shell script usually started with shebang (or hashbang):
#!/bin/sh

Debug features in shell:
set -euxv

e : stop first error
u : check uninitialized variables / prevent undefined behavior
x : print line the executed command
v : print line as read from input

In posix the return values always a positive numbers (0-255).

Interesting/technical/programming web sites

I'm continuously collecting different websites that contains useful things.

Physics video lecture:
http://ocw.mit.edu/courses/physics/8-01-physics-i-classical-mechanics-fall-1999/video-lectures/

Math:
http://tutorial.math.lamar.edu/

OpenGL:
-Basic, tutorials:
http://www.lighthouse3d.com/
http://www.dhpoware.com/demos/index.html
http://openglbook.com/

Useful/basic key combos in Vim:

:map <F7> : tabn<CR>
:map <F8> : tabp<CR>
:set numbers
:set mouse=a
:set smartindent
:set tabstop=4
:set shiftwidth=4
:set expandtab
:e open file

:set noexpandtab    " Use tabs, not spaces
:%retab!            " Retabulate the whole file

caw: delete current word and go into insert mode
daw: delete current word
e: go to end of current word
gg <X>: goto line <X>
G <X>: goto line <X>

% select single bracket

yy to copy the line

dd to delete the line

v enter visual mode

y yunk/copy

d delete

  p paste after curren line

  P paste before current line

yiw: Yank inner word (the word under the cursor). This command also moves the cursor to the beginning of the word.
viwp: Select inner word and paste with clipboard content

b:go to beginning of current word

yw: yank word
vey: visual mode & end word & yank
vex: visual mode & end word & delete
byw: begin & yank & word

Generate tags file to OmniComplete:
ctags -R --sort=1 --languages=C,C++ --c++-kinds=+p --fields=+iasS --extra=+q

Start vim:
vim -t tags

Type in insert  mode:
<C-n> <C-p>

Navigate in Vim:

Keyboard command	Action
Ctrl-]	Jump to the tag underneath the cursor
:ts <tag> <RET>	Search for a particular tag
:tn	Go to the next definition for the last tag
:tp	Go to the previous definition for the last tag
:ts	List all of the definitions of the last tag
Ctrl-t	Jump back up in the tag stack

My first post - introduction

Ha minden jól megy, akkor ezen a blogon szándékozom megosztani az agymenéseimet/tapasztalataimat... Elsősorban anyanyelvemen, de szándékaim közt van, hogy angol nyelven is írok bejegyzéseket. Nem tudom minek köszönhetően vágok bele, de lehet a kinti 34-35 celsius fokos idő se tett jót. A téma többnyire szakmai: programozás/informatika. De előfordulhat, hogy más ebbe a témakörbe nem illő dolgokról is fogok írni.
A címről, csak annyit, hogy minden népszerű cím foglalt, így hát ki kellet találnom valami okosat és ez lett.

No magamról pár szót:
Lassan 5.dik éve programozok főállásban egy budapesti irodában. Amikor jelentkeztem, akkor simán "c++" programozót keresett a cég, amire jelentkeztem. A felvételi feladatom, OpenGL alkalmazás volt, egy jelenet shadow mapping techinka használatával. Egészen nehezen ment, rengetegett kellett tanulnom hozzá, hogy teljesiteni tudjam a feladatott. Aztán jött egy hívás, hogy ha érdekel a munka, akkor betölthetem. Hát én örültem, mivel, 3 helyre küldtem, csak CV-t. Folytatás később...