Reading hardware information from command line with built-in tools.You can easily integrate the software into the system bar and create multiple modes for different cooling requirements. It lets you control the minimum fan speed of both laptop and desktop Macs with Intel CPUs. The above article and the script it contains was designed for Mac OS X 10.4.3. smcFanControl is free to download and comes with a few essential features. However in order not to damage your machines smcFanControl doesn't let you set minimum speed to a value below Apple's defaults. You can download and use the software to check. So you can increase your minimum fan speed to make your Intel Mac run cooler. smcFanControl is a free utility tool that increases the minimum speed of the in-built fan of your MacBook. Ive found that running spindump then cat /tmp/spindump.txt grep 'Fan speed' will show it, but thats very slow. This article, get sensor information, shows how to use ioreg to extract the fan speed information with: ioreg -c IOHWSensor | grep -B3 -A11 '"type" = "fanspeed"' smcFanControl lets the user set the minimum speed of the build-in fans. I would like to view the current fan speeds of my MacBook and iMac using terminal. See Can I get the CPU temperature and fan speed from the command line in OS X? Pre-Mac OS X 10.5 Other tools and applications exist, including Temperature Monitor. This is a computationally expensive process, even when run for one second. smcFanControl is a quite curious application that allows you to chane the speed of the different fans inhabiting your computer. Spindump requires administrator privileges and when run manually, spindump samples user and kernel stacks for every process in the system. This article, OS X: Current CPU temperature on command line, talks about the project and how to extract the fan speed: smc -k TC0D -r | sed 's/.*bytes \(.*\))/\1/' |sed 's/\(*\)/0x\1/g' | perl -ne 'chomp ($low,$high) = split(/ /) print (((hex($low)*256) hex($high))/4/64) print "C\n" ' The open source project Fan Control includes a command line tool that provides fan speed information. smcFanControl lets the user set the minimum speed of the built-in fans, so you can increase your minimum fan speed to make your Mac run cooler. It appears no tool, installed by default on OS X, exposes this information through the terminal. Since Mac OS X 10.5, you need to use a third party piece of software to access the fan speed information. See the smc manual page for more options. You can use smc to get fan speed information via Terminal.app: smc -f Current Macs properly manage temperature and fans. Lubbo's MacBook Pro Fan Control ATTENTION: This project is not maintained anymore. You mention in your comments having smcFanControl installed this open source project includes the command line tool smc. iFanAutoControl is an application to automatic control the fans of the computer and regulate the temperature of MacBook and MacBookPro Apple Computers based on Intel processors and Windows OS.
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