I have been looking all over the internet for information about rooting and am having difficulty making sense of it all (I suspect in part because there are well intentioned people who are describing things inaccurately). I have been using/developing linux/unix for over 40 years. Maybe that is making it harder for me to understand what I am seeing that is written by or for people who do not understand the details of how linux works. All I want to do is make some space on my 8GB ROM on my LG G5. With just a few added apps installed I am down to 0.5GB available and cannot even apply updates because the system complains I am out of memory. I do NOT want to always run as root, that is too dangerous. I just want what I have on any other linux system I use, the ability to execute SU to temprarily gain root provilege to do a specific task (like remove an uneeded bloatware system app). But generic android does not have an SU program on it. Is there a simple way to modify my file system to add an SU program (ideally one that requires a pin/password to execute to protect against someone using SU to mess with my phone) that temprarily gives me root access but then I can drop back down to "normal" access. Just that minimal change.