How To Install XLOCK on BT 5 r2 GNOME

1. aptitude install xlockmore
2. run xlock
     -----> You Find screensaver lock
3. Add at keyboard shortcuts
-- System + Preferences + keyboard shortcuts
4. At the bottom of the screen click “Add”
5. For the name enter in something like “Lockscreen”
6. For the command enter in “xlock”
7. Click Apply
8. Click on the newly created menu item you made “Lockscreen” at the bottom of the list and press CRL+ALT+L orwhatever you want to bind your screen locking key to be.
9. Click Close
10. Now you can lock your screen by pressing the key you bound.