How can I access the folder that is used just before in "Files" using Backspace like which is done in Windows explorer??
2 Answers
I don't know how to use Backspace, but there are a few Keyboard shortcuts:
Alt+Left - Move 'Back' through history of navigated folders
Alt+Right - Move 'Forward' through history of navigated folders
Alt+Up - Move 'Up' - navigate to parent directory
There are more listed here
You can change it to be the shortcut to navigate back, though it might be simpler to use Alt+Left.
First kill nautilus with:
nautilus -q
Note this will close any file manager windows, and probably anything it is doing
Open the text editor with the file by running this in terminal or command prompt:
gedit ~/.config/nautilus/accels
search for this line (Ctrl+F and then type actions/Up):
; (gtk_accel_path "<Actions>/ShellActions/Up" "<Alt>Up")
and replace it with: (gtk_accel_path "/ShellActions/Up" "BackSpace")
Save and exit, then close terminal, and open Files again, and it might work 
You can either do this here:
1) Just add the accel key to the config file. I did in a terminal console:
echo '(gtk_accel_path "<Actions>/ShellActions/Up" "BackSpace")' >> ~/.config/nautilus/accels
Restart nautilus after killing it by executing
nautilus -q
Or
2) edit ~/.config/nautilus/accels
Press Ctrl+F and type Alt+Up to find the right line.
Remove the ; symbol in front of the line: (gtk_accel_path "/ShellActions/Up" "Up")
Change Up to BackSpace
Hope it helps. :-) 
- 897