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How to Compute Like a Grad Student

How to Compute Like a Grad Student. Chris Colohan colohan+@cs.cmu.edu. Old History…. <91 Concept Terminal w/ Vaxen 91 IBM RT 12MB/250MB 92 16MHz MIPS R3000 DecStation 3100 93 20MHz MIPS R3000 DecStation 5000/20 94 25MHz MIPS R3000 DecStation 5000/25 or PowerMac 7100/66

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How to Compute Like a Grad Student

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  1. How to Compute Like a Grad Student Chris Colohan colohan+@cs.cmu.edu

  2. Old History… • <91 Concept Terminal w/ Vaxen • 91 IBM RT 12MB/250MB • 92 16MHz MIPS R3000 DecStation 3100 • 93 20MHz MIPS R3000 DecStation 5000/20 • 94 25MHz MIPS R3000 DecStation 5000/25 or PowerMac 7100/66 • 95 DecStation 5000/200s with mono monitor • 96 Sun SparcStation 4 (No, this is not a Moore’s law slide.)

  3. Recent History… • 97 266MHz PII/64MB/4GB • 98 400MHz PII/128MB/6GB • 99 500MHz PIII/128M/8GB • 00 733MHz PIII/256MB/20GB • 01 1GHz PIII/512MB/40GB • 02 1.8GHz PIV/1GB/60GB • 03 2.4GHz PIV/1GB/80GB

  4. In Today’s Talk • Administering your machine • Communicating with others • Kerberos and AFS • Useful tips and links

  5. The RPP • Be nice! • Refill the printers • Don't leave the printers jammed (x8-2607) • Don't print big jobs during peak hours • Ask facilities before you do strange things • broadcast packets • move hardware • commercial anything • looking through other people's files: get explicit permission first • look for permissions in their .plan • ask them directly

  6. Do Today! • .plan file • door label • home page • Andrew • finger firstname.lastname@andrew.cmu.edu • login = first 8 digits of SS# • Email forwarding • colohan@cmu.edu name • ccolohan@andrew.cmu.edu name

  7. More to do today! • Create username.root telnet jeeves kerberos create username.root • Mail facilities and ask for root on your machine • Local password: “passwd –l” • Ask for a copy# from the main office (WeH4212)

  8. How to get help • Office mates • Zephyr • help@cs.cmu.edu • Help desk (x8-4231) “how do I…?” • Operator (x8-2607) “machines are down…” • Facilities advisory committee (dpelleg+@cs.cmu.edu)

  9. Where does the money go? • Costs money: • new kerberos Ids • printing • network ports • software • backups • dialups (1-800) • Free: • accounts on machines • WaveLan

  10. Kerberos • Log in, get a “ticket” • klist, kinit • Tickets are good for 25 hours • Used for: • Authentication (log into other machines without passwords) • Encryption (make sure nobody can snoop your connections) • Renew for 30 days: krenew(unix only) • Renew forever: kkerberos(unix only) • network/clock failurekerberos failurelogin failure

  11. afs /afs/cs/user/colohan/…

  12. Using afs • Access control: • fs help • fs listacl /afs/cs/user/colohan • fs setacl /afs/cs/user/colohan colohan rlidwka • mkdir ~/private • fs setacl ~/private –clear colohan rlidwka • Ignore unix permissions! • Careful with mail directory permissions! • Turn tickets into tokens with aklog • Quotas: • fs quota /afs/cs/user/colohan • telnet jeeves • Backups in ~/OldFiles

  13. NOT Using afs • Why not? • Writes go to server on close • Can be slow (especially for builds) • Security • Bits sent on network in the clear • Server or network down == no work for you • Use local disk (/usr0) • May want to move home dir to /usr0 • or create a local account on your machine

  14. Windows • Run Windows updateNOW • Always log into SCS domain! • Email • Use pop3 to your maildrop (ux#.cs.cmu.edu) • imap/Exchange in beta • Do not run a client on the ux# servers! • Printing • Printers off of \\monolith

  15. Windows cont. • File sharing • AFS • Can make a FAT partition if you want • Telnet/ssh • putty (ssh) • niftytelnet (kerberized telnet) • Peter Dinda’s FAQ

  16. Insert Windows Demo Here

  17. Linux • Choose a window manager • edit ~/.xinitrc (WM=startkde) • Depot • It “owns” /usr/local • make your own collections • become a misc maintainer • Getting local root if your machine dies • vmware • Local disk is /usr0 • man cdrecord (or use a cdrecord gui)

  18. Insert Linux Demo Here

  19. Zephyr • A reminder: ZINMT • Zephyr Is Not My Thesis • Command line version: • zwgc (started by default) • zwrite colohan –m “Lunch?” • Blatant plug: kzephyr!! • Emacs zephyr mode • For Windows: jzephyr (beta testers wanted!) • FZQ • Zephyr archive (contains posting interface!)

  20. Public Zephyr • Common “instances”: • help.*, chat.*, newsbites, graffiti, ephemera, sddd, *.d, facilities.announce, facilities.discussion • Don’t sign messages • Don’t take people too seriously • Andrew/MIT zephyr use is different • Filter instances you are not interested in

  21. Netnews (bboards) • cmu.cs.scs: important announcements • cmu.cs.*.announce: new software or changes • cmu.cs.general: general interest items • cmu.misc.market: fun fun fun! • On unix, use localhost as news server • On Windows, use dnntpd.srv

  22. ssh ssh –X colohan@ux4.sp.cs.cmu.edu scp gs138.sp:~/foobar ./ • Very useful from off campus! • Putty and TeraTerm ssh works well in Windows

  23. Email filtering • Create a .maildelivery file on your maildrop machine (ux#) • man maildelivery • Use username+foo@cs.cmu.edu • man spamassassin-maildelivery

  24. More Resources • SCS facilities help page • Last year’s talk • CMU web resources • Jonathan Billings’ rh9 tip page • man phone This talk can be found at: www.cs.cmu.edu/~colohan/ic03/htclags.htm

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