That script is copied from the HJT program at HackForums if im correct? If so, I suggest you provide credits. 
This guide is helpful for new members, but I would suggest using a seperate program, like CCleaner, if you just want to clear your temp files and such. ATF is primarily used to lessen the times that anti-malware/virus/spyware scanners take.
This guide is helpful for new members, but I would suggest using a seperate program, like CCleaner, if you just want to clear your temp files and such. ATF is primarily used to lessen the times that anti-malware/virus/spyware scanners take.