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Slides Demo

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quxx

Graphviz

Gaabba->bccb->c

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two!

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Three!!!

Katex

pi(x)pj(y)    C(x)<C(y)p_i(x) \rightarrow p_j(y) \implies C(x) < C(y)

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Golang

func main() {
  fmt.Println("Hello, world!")
}

More Katex

e=mc2 e=mc^2

Distributed File System

Gcluster_mgr_memmgr memoryfofilename+offsetddirectoryfo->ddecfirst access?d->decucunix cachedec->ucnommapmmap (repl)dec->mmapyesldbdata blockuc->ldbmgrmgrmmap->mgrdec2In memory?mgr->dec2pucpeer unix cachepdbdata blockpuc->pdbdec2->pucyesimapimapdec2->imapnossstorage serverinindex node of logseqid of requested data blockss->insgm2stripe group map (repl)in->sgm2ss2storage serversdbdata blockss2->sdbsgmstripe group map (repl)imap->sgmimap->sgm2potential short-cut onsecond access of inodesgm->sssgm2->ss2

Global Memory System

GvmmVM Managerwriteread freeflFree listvmm:3->fldnfsDisk NFSvmm:2->dnfs:wvmm:s->dnfs:wgmsGMSvmm:s->gmsget/put pageubcUnified Buffer Cachewriteread freeubc:3->flubc:2->dnfs:eubc:s->dnfs:eubc:s->gmsget/put pagepfPage faultspf->vmm:1pfsPage Fault, FS Read/Writepfs->ubc:1podPage out daemonpod->vmm:npod->ubc:npod->gmsgms->flalloc/free pagegms->dnfs:wrgmsRemote GMSgms->rgms

Math

σE[(Xμ)2]=+(xμ)2f(x)dx\sigma \equiv \sqrt{\operatorname E\left[(X - \mu)^2\right]} = \sqrt{ \int_{-\infty}^{+\infty} (x-\mu)^2 f(x) , \mathrm dx }

Quote Test

I'd just like to interject for a moment. What you're referring to as Linux, is in fact, GNU/Linux, or as I've recently taken to calling it, GNU plus Linux. Linux is not an operating system unto itself, but rather another free component of a fully functioning GNU system made useful by the GNU corelibs, shell utilities and vital system components comprising a full OS as defined by POSIX. Many computer users run a modified version of the GNU system every day, without realizing it. Through a peculiar turn of events, the version of GNU which is widely used today is often called "Linux", and many of its users are not aware that it is basically the GNU system, developed by the GNU Project. There really is a Linux, and these people are using it, but it is just a part of the system they use. Linux is the kernel: the program in the system that allocates the machine's resources to the other programs that you run. The kernel is an essential part of an operating system, but useless by itself; it can only function in the context of a complete operating system. Linux is normally used in combination with the GNU operating system: the whole system is basically GNU with Linux added, or GNU/Linux. All the so-called "Linux" distributions are really distributions of GNU/Linux.
Richard M. Stallman

More quotes

Linux is obsolete.
Andrew Tanenbaum

Thank you!