ubunto command open a file code example
Example 1: ubuntu open file from terminal
xdg-open file-name
# xdg-open myPicture.png
Example 2: how to open files using terminal in ubuntu
#for short files
cat filename.txt
#for longer files
less filename.txt
#to edit files inside terminal open using vim or nano
#using vim
vim filename.txt
#using nano
nano filename.txt