How to change system language on Fedora 22 and Debian 8 ?

Fedora 22:

In Root terminal:

Show current setting:
[root@fedora22~]# echo $LANG
en_US.UTF-8

Change current setting:
[root@fedora22~]# vi /etc/locale.conf
LANG="en_US.UTF-8"

Modify language setting:
LANG="en_US.UTF-8"
e.g. LANG="hu_HU.UTF-8"

Apply new setting:
[root@fedora22~]# source /etc/locale.conf

Show current setting:
[root@fedora22~]# echo $LANG
LANG="hu_HU.UTF-8"

Table of locales:
https://docs.moodle.org/dev/Table_of_locales

http://www.server-world.info/en/note?os=Fedora_20&p=locale


Debian 8:

In Root terminal:

vi /etc//default/locale

Modify language setting:
LANG="en_US.UTF-8"
e.g. LANG="hu_HU.UTF-8"

Apply new setting:
dpkg-reconfigure locales

Table of locales:
https://docs.moodle.org/dev/Table_of_locales

https://wiki.debian.org/ChangeLanguage

How to set proxy in Google Chrome on Linux?

Right click on the Chromium desktop icon and click on properties.
In the dialog box that opens, add this line after the %U in the command field:

--proxy-server=<host:port>

(Where "host" is your proxy server name or address, and "port" is your proxy server port.)

Dell Inspiron 15 (3543) Notebook - USB 2.0-CRW (Card Reader) Windows 8.1 driver (Realtek USB RTS5139/RTS5129/RTS5179 Card Reader Driver)

Realtek USB RTS5139/RTS5129/RTS5179 Card Reader Windows 8.1 Driver

After installing Windows 8.1
Device manager
USB2.0-CRW (yellow exclamation mark)
USB 2.0-CRW (Card Reader) 32 / 64 bit Windows 8.1 driver download link

Microsoft Arc Touch Bluetooth Mouse and Windows 8.1 - Misleading notebook built-in Bluetooth adapter

The configuration:
-Sony Vaio Notebook (older edition)

-Windows 8.1

-Microsoft Arc Touch Bluetooth Mouse

Sony Vaio with Windows 8.1 can't recognise the Microsoft Arc Touch Bluetooth Mouse.
The built-in bluetooth adapter works fine, bacause it recognises e.g. cell phone with bluetooth or other bluetooth mouse.
Microsoft Arc Touch Bluetooth Mouse is compatible with Windows 8.1.
Where is the problem?

This Sony Vaio notebook was originally shipped with Windows 7, then was reinstalled to Windows 8.1.
(Anyway Windows 8.1 works fine with older Vaio.)

So it was neccesarry to buy a cheap Bluetooth 4.0 Micro USB adapter.
This solved the problem.

How to check your device to see if it's Bluetooth 4.0 enabled?

AltGr Key Doesn’t Work

If you need for special symbols with AltGr key and this function does not work, press Ctrl + Alt(on left side of the keyboard) and the special symbol's button.

Fedora 22 proxy settings

Yum:
sudo vi /etc/yum.conf
proxy=http://proxy.server.name:port

and if you need:
proxy_username=youruser
proxy_password=yourpassword

(If you define a proxy server in /etc/yum.conf, all users connect to the proxy server.)

dnf:
sudo vi /etc/dnf/dnf.conf
proxy=http://proxy.server.name:port

Yum Extender
Edit
Preferences
Yum
Proxy

Export:
export http_proxy=”http://proxy.server.name:port”
export ftp_proxy=”http://proxy.server.name:port”

Message if you want to change something in BIOS: View only item

When i wanted to change something in BIOS (e.g. boot order), always this message appeared:
View only item

It was neccessary to remove and replace CMOS battery (CR2032).
After replacing CMOS battery the "View only item" message was gone.

How to find MAC address in Windows Command Line

getmac -v

or

ipconfig -all (this command will show the IP address as well)

How to turn on / off Windows firewall using Command Line

Turn Off:
NetSh Advfirewall set allprofiles state off

Turn On:
NetSh Advfirewall set allrprofiles state on

When you attempt to uninstall a software in “Programs and Features”, you get an error message: “Error opening installation log file. Verify that the specified location exists and is writable.”

When you attempt to uninstall a software in “Programs and Features”, you get an error message:
“Error opening installation log file. Verify that the specified location exists and is writable.”

Solution:
Stop the Explorer.exe process with Task Manager.
Then restart:
Go to File > New Task(Run)

Simply type explorer.exe in the new task box to restart the explorer, then click to OK.

Now, you can uninstall any software.

Source: Microsoft