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I've just noticed that my mac has loads of sudo processes running – why? What is causing them?

Lots of sudos!

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The easiest way to determine what's going on here is to open a terminal and run

ps aux | grep sudo

On my machine there are many lines, all that include:

/usr/libexec/StartupItemContext /usr/bin/open -a /Library/Application Support/iStat Server/

So, we know that it's from a start up item, specficially iStat Server.

As I don't use that app anymore, I'll uninstall it.

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