How to open a pdf file in linux, ubuntu,linux command to open a pdf file, in terminal

To open a pdf file in ubuntu ( or linux machine) it requires 'okular' sofware. First install 'okular' in linux and then use the following command.

Installation of okular:  Type the following command in the termial. ( For ubuntu)

sudo apt-get install okular ( press 'enter')

Opening pdf file:

For example:

If you want to oen a file 'file.pdf' type the following command in termianl.

okular file.pdf ( press 'enter' )