To update nemo left hand menu bookmarks
I added desktop as a bookmark twice and was unable to remove it via nemo file explorer GUI.
So, I updated the configuration by editing the nemo bookmarks file.
The steps to do that are:
1 2 3 4 5 6 7 $ cd ~/.config/gtk-3.0/ $ # let us first check what all entries are there $ cat bookmarks $ # now as a super user or by using sudo you can edit this file to add or remove bookmarks