According to Wikipedia:
A Sandbox is a test environment (in the context of software development or web development), which isolates changes in the code, the result of experimentation, from the production environment itself….
Knowing the above, we now understand what Glimpse is . In GNU/Linux , as in other operating systems, there are development versions of many applications, and of course, the developers invite you to try them out to see how they behave in an environment different from the "laboratory."
Testing programs is something many of us enjoy, and sometimes those programs may be in alpha or beta versions, which can cause problems on our system, and sometimes we have to reinstall our OS, but that's where Glimpise comes in , to test whatever we want without affecting our system.
With Glimpse we will have a sandbox where we can install programs on GNU/LINUX , test applications or applications under development so we can tinker without the problems that come with it.
The way Glimpse works is that any application installed on it can access system data, but when it tries to write or make changes, these will only be reflected within the Glimpse environment , leaving our files safe.
To install Glimpse on Ubuntu :
First we add the repository:
sudo add-apt-repository ppa:glimpse-hackers/stable
Then we proceed to install:
sudo apt-get update && sudo apt-get install glimpse glimpse-profile-elementary glimpse-profile-ubuntu
Why not have something like this in our system? try it at least.