Most, but not all of my Essbase administration experience is on Windows servers. Linux support appeared years ago and has gotten much better – and more common – as the years have progressed. I ran Linux as my desktop for many years (Slackware, Fedora, Gentoo [shudder], Ubuntu, and more) before falling in love with OS X so I’m pretty comfortable on a Linux command line (and an OS X command line for that matter). But I came across this server troubleshooting article awhile back that has some absolutely awesome stuff in it, much of it new to me. If you need to get into a Linux system and start digging around to see what’s going on, this is an absolutely awesome guide.