how to print on both the sides of a page using libre office

I just want to know the procedure by which one can print a documents on both the sides of a paper using Libre office.

First of all you need to have a printer that supports double side printing, and have its corresponding driver properly installed.

Then using LibreOffice Writer (I am using it as an example), go to

File --> Printer Settings, select the right printer here, then go to its Properties

If you printer supports double side printing, you must find a Duplex option there. From the drop-down choose Long-edge or Short-edge as you like. Execute print command, and there you go.

Go to Page Setup and select Long Edge (Standard), as shown below.

I have this same problem in kUbuntu 14.04 LTS. My default settings for my printer are all correct (Double-Sided Printing = Long Edge (Standard), Installable Options: Duplexer Installed = Installed) and double sided printing only works by default on some apps. For LibreOffice 4.x I had to do the following:

Option 1 (Current Document)

1. File > Printer Settings
2. In the pop up dialogue box click Properties
3. On the Paper tab check that "Duplex" is set to Long Edge (Standard)
4. On the Device tab under options in the left column, check that "Duplexer Installed" = Installed
5. On the Device tab check that "Printer Language Type" = PostScript (Level from driver)
6. Click "Ok" and the document you are working in should print double sided.

You can also change the above settings from the dialogue box that pops up when you start a print job. This will not make all LibreOffice files print double-sided by default. To do that read this stackexchange post or see below.

Option 2 (Global Change for LibreOffice)

For Ubuntu specifically I ran the following commands:

$ which soffice
/usr/bin/soffice

$ ls -l /usr/bin/soffice
lrwxrwxrwx 1 root root 34 Feb 28 18:04 soffice -> ../lib/libreoffice/program/soffice

$ cd /usr/lib/libreoffice/program && ./spadmin  

In the pop-up dialogue

1. Choose your installed printer
2. Click properties
3. Update all the settings as outlined in Option 1, starting with number 3 in the list.

Now all LibreOffice files should print with double-sided printing by default.

Other reading on LibreOffice Printer settings