Firefox HiDPI support

about:config
Change layout.css.devPixelsPerPx to 1.7 for HiDPI

Change FN key behavior on Ubuntu 16.04 installed on Macbook pro

Change Function Key behavior

This section of the document describe how to change the behavior of 'fn' key to better match what user expect. (See #201711, #162083)

Here a description of each behavior :

• 0 = disabled : Disable the 'fn' key. Pressing 'fn'+'F8' will behave like you only press 'F8'
• 1 = fkeyslast : Function keys are used as last key. Pressing 'F8' key will act as a special key. Pressing 'fn'+'F8' will behave like a F8.
• 2 = fkeysfirst : Function keys are used as first key. Pressing 'F8' key will behave like a F8. Pressing 'fn'+'F8' will act as special key (play/pause).

Ubuntu 9.04 to 12.04 LTS (Precise Pangolin)

Temporarily

The following command will change the behaviour of 'fn' key with immediate effect, but restarting will reset the configuration:

$ echo 2 | sudo tee /sys/module/hid_apple/parameters/fnmode

(The meaning of fnmode values is as described in the preceding section.)

Permanently

Methods described in this section will change the behavior permanently. There are several ways to proceed with this modification. Each sub-section describes one way to permanently change the configuration.

With .conf file (Recommended)

1. Run the following command to append the configuration line to the file /etc/modprobe.d/hid_apple.conf creating it if necessary:

$ echo options hid_apple fnmode=2 | sudo tee -a /etc/modprobe.d/hid_apple.conf

2. Trigger copying the configuration into the initramfs bootfile.

$ sudo update-initramfs -u -k all

3. Optionally, reboot

$ sudo reboot

How to change the blogger blog post font

There are limited fonts available to be selected in Blogger. If you want to use a special font, here is a trick you can use:

Copy and paste

haha

To HTML and switch back to Compose. Then you can use your desired fonts.

Font of Microsoft OneDrive Text or text editor

Apparently Microsoft OneDrive website font depends on your operating system's browser version.
I like to use the Consolas font for the display, but it always uses Courier New as the font for my Ubuntu/Linux Firefox browser.

The solution is to install User Agent Switcher in Firefox and use Windows/Firefox to enable the Consolas font.

Windows cannot go to sleep

powercfg /energy

Then open:
C:\WINDOWS\system32\energy-report.html

How to install the latest cinnamon on Ubuntu 16.04

sudo add-apt-repository ppa:embrosyn/cinnamon

sudo apt update
sudo apt install cinnamon 

How to enable night light on Ubuntu 16.04

Night light is a feature to make the screen color warmer. It can help to make your eyes feel better when the environment is not very bright.

sudo apt install redshift-gtk

Then run:
redshift-gtk, it will add an icon on the system tray.

cat ~/.config/redshift.conf 
; Global settings for redshift
[redshift]
; Set the day and night screen temperatures
temp-day=5500
temp-night=5300
location-provider=manual
[manual]
; Bay area
lat=37.362578
lon=-122.041881
; Beijing
;lat=39.9042
;lon=116.4074

VIM frequently commonly used commands

Left: h
Right: l
Up: k
Down: j
Undo: u
Start Editing: i
Append at line end: A
Edit after cursor: a
Goto line: number then G
Delete line: dd

Firefox monospace font is not used

Today I found that my Firefox 57 doesn't render the monospace font correctly anymore. It should render Consolas font, but for some reason it renders as Serif font.

After a little debugging, I found that this was caused by the Windows 10 language & region formats. I set it to Chinese (Simplied, China).

How to fix:
Instead of modifying the Latin font settings in Firefox, change the Chinese, Simplied font settings to Consolas instead. My problem was fixed by that.

Linux下的飞鸽传书 iptux

sudo apt install iptux

Tools | Preferences | System
Use gb2312 for Preference network encoding

Windows 10 飞鸽传书不能传文件解决办法

一般情况是因为防火墙。
Goto:
Firewall & Network Protection | Allow an app throught firewall
 Allow 飞鸽传书 in both private and public

How to connect to anohter windows 10 shared folder with different credentials

Just use the IP of the machine instead of using the machine name!!

飞鸽传书 乱码 Windows 10解决办法

Additional date, time and regional settings | Language | Change date,time or number formats

Formats: Change format to Chinese (Simplified, China)
Administrative: Language for non-Unicode programs, Current language for non-Unicode programs: Chinese (Simplified, China)