a freinds has a laptop mac thats running slow,how do you clean a mac?

it's a powerbook g4 and i know nothing about macs,any info woudl be helpfull

Answers:
1) see how much RAM is installed on the Mac, how much free disk space it has, the CPU speed, and the version of OS X running on it. If the RAM is less than 512MB, that would strongly contribute to it being slow. If the free disk space is less than 20%, ditto.

2) If Mac is running Norton antivirus/firewall, purchase Intego Netbarrier/VirusBarrier and remove Norton. In my experience, Norton slows down Macs (regardless of CPU speed and RAM) by 60-75% at startup, and 50%+ when launching applications.

Other answers:
Download a program called Cocktail, click on the last icon called "Pilot", check all the boxes and hit RUN !!!

mac_yoda she/he is right i guess
In"utilities" folder select Terminal. Type sudo sh /etc/daily monthly weekly. Hit return.
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