## System Update
We can use this cmd in terminal to make system update

    $sudo apt-get update

## Change Date & Time

0
The command date


    $ date
    Tue Jun  9 18:04:30 EEST 2015

The command zdump used to echo the time in a specified time zone.

    $ zdump EEST
    EEST  Tue Jun  9 15:05:17 2015 EEST

hwclock

    $ sudo hwclock
    Tue 09 Jun 2015 06:05:55 PM EEST  -0.656710 seconds

clock but needs to install xview-clients

    sudo apt-get install xview-clients

using ntpdate command. ntpdate is used to set system time but using without sudo will just print the time and date.

    $ ntpdate

    30 July 7:
    0

#Date and change using terminal

    $timedatectl
    $sudo timedatectl set-timezone Asia/Yangon

## Change Launguage

Edit two files:

    sudoedit /etc/default/locale:

    LANG="en_US"
    LANGUAGE="en_US:en"

    sudoedit ~/.pam_environment:

    LANG=en_US
    LANGUAGE=en_US

  ## Add custom to Dock
      - add custom program to favourite of ubuntu Dock
      - first create [.desktop] under directory [sudo nano /usr/share/applications/yourapp.desktop]

  ```
#!/usr/bin/env xdg-open
[Desktop Entry]
Version=1.0
Type=Application
Terminal=false
Exec=/path/to/yourapp
Name=YourApp
Comment=Description of YourApp
Icon=/path/to/yourapp.png
  ```

- Make this file executable
```sudo chmod +x /usr/share/applications/yourapp.desktop```

- Log out and log in

 link>>https://averagelinuxuser.com/ubuntu_custom_launcher_dock/