Saturday, 23 May 2015

Fix crappy VS Find&Replace

Tools -> Options -> Environment -> Find and Replace -> Automatically populate Find What with text from the editor

Win32PrioritySeparation

You can set up the CPU schedule via
HKLM\SYSTEM\CurrentControlSet\Control\PriorityControl\Win32PrioritySeparation

2A Hex = Short, Fixed , High foreground boost.
29 Hex = Short, Fixed , Medium foreground boost.
28 Hex = Short, Fixed , No foreground boost.

26 Hex = Short, Variable , High foreground boost.
25 Hex = Short, Variable , Medium foreground boost.
24 Hex = Short, Variable , No foreground boost.

1A Hex = Long, Fixed, High foreground boost.
19 Hex = Long, Fixed, Medium foreground boost.
18 Hex = Long, Fixed, No foreground boost.

16 Hex = Long, Variable, High foreground boost.
15 Hex = Long, Variable, Medium foreground boost.
14 Hex = Long, Variable, No foreground boost.

Sunday, 8 March 2015

Linux tcp tuning

You can increase the network performance by override the default settings:

cat /etc/sysctl.conf
vm.swappiness = 10
vm.vfs_cache_pressure = 500
net.core.netdev_max_backlog = 4096
net.core.wmem_max = 1048568
net.core.rmem_max = 1048568
net.ipv4.tcp_wmem = 8192 32768 2027520
net.ipv4.tcp_rmem = 8192 131072 2027520
net.ipv4.tcp_mem = 32768 98304 131072
net.core.optmem_max = 32768

To the meaning of them, please check in man.

Sunday, 8 February 2015

Replace default notepad

 There is a little trick to replace windows' default text editor to anyone.

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\notepad.exe]
"Debugger"="c:\\Program Files\\EmEditor\\EmEditor.exe"

There is only issue with this:
because of the Debugger string purpose of set up a debugger application the notepad called with the following form:
c:\\Program Files\\EmEditor\\EmEditor.exe c:\\windows\\notepad.exe
So in emeditor always try to open notepad.exe too.

So better alternative use the http://www.binaryfortress.com/notepadreplacer/
or you have to write a wrapper exe.

Saturday, 7 February 2015

Windows bootable pendrive

Copy dvd content to pendrive.

BOOTSECT.EXE/NT60 d:

Get the progress of dd

I found a good article how to get the progress of dd.

Show progress during dd copy

dd is a popular, generic command-line tool for copying files from 1 location to another. It is often used to copy entire disk images.

Like many Linux command line tools, it operates silently unless something unexpected happens. Its lack of visual progress feedback is a nice feature for scripting. However, it can leave you wondering about its progress if you are interactively dd-copying a large disk.

To illustrate, you run the following (valid, but perhaps not very useful) dd copy:
$ dd if=/dev/random of=/dev/null bs=1K count=100 


It will run for a few minutes as it copies (and immediately discards) 100 blocks of randomly generated data, each of size 1 KB.

To get a progress report while dd is running, you need to open another virtual terminal, and then send a special USR1 signal to the dd process.

First, find out the process id of the dd process by running the following in the new virtual terminal.
$ pgrep -l '^dd$'
8789 dd
$


To send the USR1 signal to the dd prcoess:
$ kill -USR1  8789
$


Note that as soon as the USR1 signal is detected, dd will print out the current statistics to its STDERR.

$ dd if=/dev/random of=/dev/null bs=1K count=100
0+14 records in
0+14 records out
204 bytes (204 B) copied, 24.92 seconds, 0.0 kB/s


After reporting the status, dd will resume copying. You can repeat the above kill command any time you want to see the interim statistics. Alternatively, you can use the watch command to execute kill at a set interval.
$ watch -n 10 kill -USR1 8789
 
Ref.:http://linuxcommando.blogspot.hu/2008/06/show-progress-during-dd-copy.html 

Saturday, 18 October 2014

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