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MUUGLines The Manitoba UNIX User Group Newsletter Volume 30 No. 9, May 2018 Editor: Kevin McGregor Next Meeting: This M!nth’s Meeting Tuesday, May 8, 2018 at 7:30 PM 1M28 Manitoba (al), * !+ , RTFM: systat(1) with Adam Th! "son 9eetings are held in the Uni0ersity of Win- UNIX systems in the 1990s routinely came with nipeg’s Manitoba Hall( terminal-based system performance-monitoring in the east end tools. Linu and Free"#$ unfortunately did not of the Uni0er- continue this tradition with the e ception of sity Comple ( top%1&. OpenB#$ has had standard system monit- near Balmoral St. We oring tools since inception( but in 199) they ad- can be found in ded systat(1&( a full-screen system monitor de- room 19=>. signed to run on the console or in a terminal. *dam will demonstrate the use of systat%1& and $oors are usually describe some of the interesting details it dis- open by 7@00 pm with plays that are still di+cult to get today on other the meeting starting at systems. [email protected] pm. Par1ing is available on the sur- Presentation: LISA 2017 Review / Intro to rounding streets. See Docker (Demo) uwinnipeg.ca/maps ,atherine Scrupa will summarize her e perience for further information from the training portion of the 31st annual about par1ing and ac- Large Installation System Administration confer- cess to the campus. ence. The training section had a de0ops-heavy -"enBSD 013 Re)eased focus( including Doc1er( Golang, Postgre#4L( 2it, tuning, and CI65$. Katherine will also gi0e a 'n April 2( the OpenB#$ proAect announced the beginner-le0el demonstration of Doc1er contain- BBth release of OpenB#$( version 6... This mar1s ers. o0er 20 years with only two remote holes int he default install. #!!$ P$i%es Notable changes include "oo1s include DNS & BIND st %1 edition!& and Good Math • #9P is supported on armCB %* Gee1:s Guide to the • !ile system handling in suspend6hibern- "eauty of Numbers( Logic( ate has been impro0ed and Computation). Plus we • Updated versions of OpenS9D3$( will be gi0ing away a couple 'penS#< and Libre##L of e-boo1s and the usual as- sortment of miscellanea. .i!ni2 .eave$ 5ome to the meeting for 5anonical has released the latest LD# version of your chance to win8 Ubuntu( called Bionic Beaver (1>.0B LD#&. The most prominent change since 1C.0B LD# is the 1/4 switch from the Unity des1top interface to the and agreed to gi0e it to Cloud!lare in e change 2NO9E destop environment. Where possible( for analyzing the garbage data. the Ubuntu de0elopers did their best to retain the 0isual style of the Unity des1top( but, well( start #o now you can conHgure any host or de0ice to geFing used to window controls on the right. use 1.1.1.1 and 1.0.0.1 to use Cloud!lare:s fast and pri0ate DNS ser0ers. Free8 Python 3 is now the default Python stac1G the 232 binary is now pro0ided by Gnu32=G a swap ./#6an Hle is now the default for new installations /e 1)th annual B#$5an ([email protected] rather than a swap partitionG and systemd-re- can.org/=01>6& is on June 869 this year. B#$5an is sol0ed is now the default DNS resol0er. a technical conference for people wor1ing on /is is Canonical:s 7th long-term supported re- and with 4.B"#$ based operating systems and re- lease and will be supported until April 20=.. lated proAects held in OFawa, Canada. Do gi0e you an idea of the many meaty tal1s Mi2$!s!4&s 5!T Se2u$ity P)atf!$ scheduled( chec1 out “The Tragedy of systemd” 9icrosoI has opted to use its own version of a %clic1-baity title ahoy8&@ Linu operating system instead of Windows 10 to dri0e its new Azure Sphere solution for se- /is tal1 is about why something li1e sys- curely connecting Internet of Things de0ices. temd came to be. It loo1s into the history of system bootstrap o0er various UNIXes 9icrosoI introduced Azure Sphere at the recent %and others&( then loo1s at mac'# and J#* security conference in San Francisco. Azure launchd before drawing direct parallels #phere is a platform that connects microcontrol- from launchd (and its cohorts& to systemd. ler units( or M5Us( embedded in cloud-connected !rom there it loo1s at why the ideas be- de0ices. The platform operates a new cross-o0er hind systemd are largely beneHcial and class of M5Us that incorporate real-time and ap- the things it does beFer than what came plication processors with built-in MicrosoI se- before it, including the notion that “ser- curity technology and connecti0ity. 0ice management” is an underde0eloped concept on a lot of UNIXy systems and /e Azure Sphere O# is built on a custom Linu that it e tends well beyond bootstrap to 1ernel. the entire system lifecycle. 1111111 /en, in order to bring it all bac1 down to 'n April 1( Cloud!lare announced their new( pri- earth( the tal1 discusses what systemd 0acy-Hrst DNS ser0ice. But what does DNS ha0e gets wrong before mo0ing on to the ac- to do with pri0acyK tual tragedy of the piece@ That the people behind systemd seem largely ill-eMuipped ;hat many Internet users don’t reali-e is that to manage the social aspect of the le0el of e0en if you:re visiting a website that is encryp- change they:re pushing and that this ted( that doesn’t keep your DNS resol0er from could sour large groups of people on the 1nowing the identity of all the sites you visit. entire idea of something li1e systemd. It /at means( by default, your I#3( e0ery Wi!i net- ends with a discussion of how Free"#$ wor1 you:0e connected to( and your mobile net- %or other B#$s& could implement the wor1 pro0ider have a list of e0ery site you:0e vis- ideas behind systemd in beFer ways. ited while using them. 6P* *ti)izati!n is ,$!ng ;hy 1.1.1.1K It has oIen been used as a place- holder( which means that since it is actually a 53U utilization is the metric e0eryone uses to 0alid public IP address( that address is flooded measure a processor:s performance. But %53U is with garbage reMuests. APNI5 held the address( a misleading measure of how busy your pro- cessor really is( says "rendan Gregg( senior per- 2/4 formance architect at Netfli( in what he calls a • $istributed File System ($!#& support in OH0e-minute public-ser0ice announcement(” at #9" v= and v. the 1Cth annual Southern California Linu Expo • ;indows Ser0er 201C forest and domain %#5*LE&. functional le0els In his Lightning Tal1( “C3U Utilization is ,/9 Distr!9aunche$ ;rong,” Brendan e plains what C3U utilization 9icrosoI has released an open source tool that means—and doesn’t mean—about performance makes it easier for programmers and de0elopers and shares the open source tools he uses to to run Linu on Windows 10. identify reasons for boFlenec1s and tune Net- Li :s systems. He also includes a mysterious case /e new tool( released at the beginning of April( study that’s rele0ant to e0eryone in 201>. also helps Linu distribution maintainers bring their distros to the Windows Store to run on .ee": Se2u$ity Ris7 ;indows 10:s Windows Subsystem for Linu !or well o0er a decade( "eep has been used by %;#L&. MicrosoI de0eloped the proAect for distri- de0elopers on Linu to get a computer:s internal bution maintainers and for de0elopers who want speaker to produce a beep. What makes Beep to create custom Linu distributions to run on useful for certain programs is the fact that it al- ;#L. lows users to control the pitch( duration and re- /e release of the Windows 10 Fall Creators Up- petitions of the sound. The utility has not re- date let anyone use W#L to install and run com- cei0ed any updates since 201.. mand-line interface tools for se0eral Linu distri- *n unnamed researcher disco0ered recently that butions. 5anonical:s Ubuntu Linu distro was the "eep versions through 1...B are affected by a race Hrst to run on W#L( followed by Suse( Fedora, condition that allows a local attac1er to escalate ,ali Linu ( Debian and others. pri0ileges to root. 'ne key ad0antage of distributing through the /e security hole has been assigned CTE-=01>- ;indows Store is the ability to install multiple 0B9= and it has been sarcastically described as Linu distributions and run them side by side. “the latest breakthrough in the field of acoustic cyber security research.” Someone created a ded- ,/9 ;ets 6!"y and Paste icated website for it (holeybeep.ninAa&( a logo( *pparently( some Windows 10 users ha0e been and named it “<oley Beep.P clamoring for the ability to copy and paste both from and to W#L (;indows Subsystem for /e indi0idual or indi0iduals who set up the Linu & consoles – a reasonable reMuest. Well( as <oley Beep website have also pro0ided a patch( of Insider Build 1?CB.( this is finally possible. but someone noticed that this fi actually intro- duces a potentially more serious vulnerability O*s of Windows 10 Insider build #1?CB.( you can that allows arbitrary command e ecution. copy6paste te t from6to Linu 6;#L ConsolesW8 ;e know that this is a feature M*NY of you R(89 71: Re)eased have been waiting for – our sincerest thanks for *pril 10th saw the release of the 5th update of Red your patience and continued support while we <at Enterprise Linu 7.
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