The story of grep, a 40 years aged Unix command

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grep is a Unix authority line application (well many Unix utilities are authority line) that searches a submit files for settlement and prints lines that enclose a pattern. If we are reading this you, we are substantially no foreigner to grep.

grep was created by Ken Thompson, a same man who wrote Unix. grep initial seemed in Unix v4 with singular facilities as compared to today’s grep.

I’ve used grep so most over a years. One of a large small utilities that’s a tack of all UNIX-like systems that we never unequivocally consider about, though use all a time.

Japan Unix Makes Power & High-Temp Webinar Available in Japanese

Japan Unix Makes Power High-Temp Webinar Available in Japanese

Jan 12, 2015

Japan Unix Co., a universe personality in a growth and placement of soldering robots, announces that it recently translated a Power High-Temperature Electronics Manufacturing Experience Webinar, conducted by Bob Willis of National Physical Lab, into Japanese and done it accessible online for giveaway during http://youtu.be/aww0xXp3x1w.

Japan Unix has cooperated with UK National Physical Laboratory (NPL) and has supposing robotic hit and laser soldering samples for investigate purposes, and valid a peculiarity in robotic and laser soldering with NPL analytic dimensions expertise. Topics explained in a news include:

1. Global manufacturers solve a issues of solder splatter
2. How to solder for high feverishness ability components
3. Micro analytics and peculiarity comparison between normal and laser soldering
4. The outcome of aging test, 200°C for 1,000 hours

The news is accessible for giveaway on Youtube in English with Japanese subtitles, interjection to National Physical Laboratory and Japan Unix.

For some-more information about a soldering systems and products, revisit https://ww.japanunix.com/en/.

Upcoming investigate computing events

8:42 a.m., Dec. 19, 2014–University of Delaware Information Technologies (IT) has announced a conference array for those researchers regulating or meddlesome in regulating a University’s High-Performance Computing (HPC) clusters. In addition, IT will offer a brief march about regulating a UNIX handling complement in January.

Researchers regulating UD’s dual HPC village clusters, Mills and Farber, have requested some-more revisit meetings to share information with any other and to plead use of a clusters with IT staff. The HPC Symposium sessions will be hold on a fourth Wednesday of any division or term.

Research Stories

The dates for a 2015 HPC Symposium sessions are as follows:

  • Wednesday, Jan. 28, 2015,
  • Wednesday, Feb. 25, 2015,
  • Wednesday, Jun. 24, 2015, and
  • Wednesday, Sep. 23, 2015.

All conference sessions will be hold from 10 a.m. to noon in Faculty Commons (116 Pearson Hall). Each event will start with an invited speak by a University investigate organisation about what they are accomplishing on a Mills or Farber clusters and interpretation with an open forum for researchers and IT staff.

For some-more information about a HPC Symposium, revisit a Research Computing website.

In addition, researchers can pointer adult for a array of UNIX basis sessions scheduled for Thursday mornings (10-11:30 a.m.) and Tuesday afternoons (1:30-3 p.m.). For some-more information about these classes, or to register, revisit a LearnIT@UD training calendar.

For some-more information, revisit UD’s Research Computing website or send email to hpc-interest@udel.edu. 

Debian Install Packages behind Firewall

apt-get --print-uris install mysql-server -y

Will print out the URL for the package and dependancies;

'http://mirrordirector.raspbian.org/raspbian/pool/main/liba/libaio/libaio1_0.3.109-3_armhf.deb' libaio1_0.3.109-3_armhf.deb 8944 MD5Sum:ddc43710db3f102df9477a8a95f025ad
'http://mirrordirector.raspbian.org/raspbian/pool/main/m/mysql-5.5/mysql-server-core-5.5_5.5.40-0+wheezy1_armhf.deb' mysql-server-core-5.5_5.5.40-0+wheezy1_armhf.deb 3060608 MD5Sum:9a8f4620799fcceb4567433caad2434e
'http://mirrordirector.raspbian.org/raspbian/pool/main/m/mysql-5.5/mysql-server-5.5_5.5.40-0+wheezy1_armhf.deb' mysql-server-5.5_5.5.40-0+wheezy1_armhf.deb 1729934 MD5Sum:98fe33dd64039ba120d1aa77e0992fa7
'http://mirrordirector.raspbian.org/raspbian/pool/main/h/heirloom-mailx/heirloom-mailx_12.5-2+deb7u1_armhf.deb' heirloom-mailx_12.5-2+deb7u1_armhf.deb 253508 MD5Sum:6155feba05b677f5f01eb5b53ae4ba2d
'http://mirrordirector.raspbian.org/raspbian/pool/main/libh/libhtml-template-perl/libhtml-template-perl_2.91-1_all.deb' libhtml-template-perl_2.91-1_all.deb 72020 MD5Sum:b25cc0a02e43fe4b5b46a01af3e98c4c
'http://mirrordirector.raspbian.org/raspbian/pool/main/m/mysql-5.5/mysql-server_5.5.40-0+wheezy1_all.deb' mysql-server_5.5.40-0+wheezy1_all.deb 73872 MD5Sum:b49873c3a32d33f6186e779202f6a87e

Cut out the URLs and put them into a file.

y=0;for x in `cat deps.txt`; do ssh username@192.168.8.111"wget -O - $x" >> $y.deb; y=$y+1; done

dpkg -i *.deb

Quick – Install Package on a Firewalled Server

On the firewalled/vpnd server;

1. find the package URL

apt-get –print-uris install dos2unix

2. wget over ssh from an internet bound server on the same network

ssh use@somehost ‘wget -O – http://mirrordirector.raspbian.org/raspbian/pool/main/d/dos2unix/dos2unix_6.0-1_armhf.deb’ >> dos2unix_6.0-1_armhf.deb

3. dpkg -i dos2unix_6.0-1_armhf.deb

Judge spanks SCO in ancient tenure of Unix lawsuit

IBM has had a win in a prolonged justice conflict with SCO over only who owns Unix and, by extension, either Linux is an unapproved clone.

Some discerning and simplified history: SCO – brief for The Santa Cruz Operation – was a program association that offering a chronicle of Unix for x86 chippery. When Linux came along in a late 90s and started branch into a business, SCO some-more or reduction sank and it pounded both Novell and IBM for their purpose in assisting to widespread Linus Torvalds’ brainchild. At interest was either those who discharge and distinction from Linux should share some of their annuity with SCO. If a justice had found in SCO’s favour, it would have been bad news for Linux.


The Novell fit ran for about 6 years, though SCO lost. After that, SCO endured all demeanour of financial strife, though managed to yield from a shrine some-more than once. Last year, SCO managed to secure approval to re-open a box opposite IBM.

Groklaw’s now posted a ruling [PDF] from final week in that Judge David Nuffer of a US District Court for a District of Utah appears to broach good news for IBM.

The essential bit of a statute looks to be this paragraph:

SCO is firm by, and might not here re-litigate, a rulings in a Novell Judgment that Novell (not SCO) owns a copyrights to a pre-1996 UNIX source code, and that Novell waived SCO’s agreement claims opposite IBM for purported breaches of a chartering agreements pursuant to that IBM protected such source code.

Interestingly, it looks like IBM is hurrying this one along: a statute says Big Blue changed for prejudiced outline settlement in a case.

The statute also appears to hit out SCO’s claims that IBM has indulged in astray foe or other blurb no-nos.

SCO is perceptibly alive: it’s been in failure for years and appears not to have thrown a punch given 2013. Yet it would be a dauntless author who suggested this new statute is a finish of a affair. The SCO zombie has shuffled on after holding most worse punishment than this and come behind for some-more brain-straining action. ®

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We Dream Alone by John Messinger during UNIX Gallery

We Dream Alone by John Messinger during UNIX GalleryWhen a English and German Romantic painters combined pieces, they began with an aspect of inlet that seemed to elicit something suggestive though ineffable, and they afterwards combined a super-enriched chronicle of that aspect of inlet on paper or canvas. The spectator afterwards intent a super-enriched nature, that was divorced from inlet by artistic creation, and afterwards was means to go behind into inlet and rivet other aspects some-more deeply or entirely due to a bearing to a artwork. The Romantics satisfied that gazing earnestly during ruins, stone formations, disfigured and disfigured trees in aged cemeteries, a moon etc., could provoke a overjoyed and trance-like state approximating (or even accomplishing) a form of communion with a world.  It seemed to be their idea to widespread this experience.

Lyle Rexer, a curator of a John Messinger uncover during UNIX, references a Romantics a integrate times in his records to a uncover by approach of contrast. While deliberating Messinger’s new pieces, he even conceives of Caspar David Friedrich’s ‘Wanderer above a Sea of Fog’ as gazing instead during a hulk video shade extended by Dolby Surround-Sound.  So what is Messinger doing?  Using a Polaroid camera, he takes zillions of photos of a vast mechanism guard possibly as it is vacant (but intense a soothing blue color) or after he has accessed several images, mostly of some healthy phenomenon/a.  He afterwards organizes these photos of a vacant shade and images from a internet into patterns on a vast grid, formulating a vast though soft, epitome design.

We Dream Alone by John Messinger during UNIX GallerySo what’s going on here? Well, given Rexer mentions a Romantics, let’s start there.  The critical thing about a Romantics is that they were not meddlesome in super-realism. Turner once said, “Indistinctness is my specialty.” Friedrich was pronounced to have embellished a ‘tragedy of landscape’ and suffered due to his enterprise to entirely embrace, in his art, all inlet unequivocally done him feel. The Romantics were a middle-men of experience. They intent nature, found something unusual about this rendezvous and attempted to pass it on.

Messinger does not start from inlet as a source. Messinger, to quote Rexer, “…sits in front of a mechanism screen, prepared to combine with a images entertainment there, though distant from them by a camera he holds, a Polaroid, that he snaps compulsively, generating a ascent raise of paper and chemical images, a ‘real’ choice to a practical universe that threatens to overflow him.” The print removes a picture again from a electronic tool and brings a picture behind into a universe as a three-dimensional object. The internet was ostensible to be a information superhighway, though a information and picture sewer, that a internet has become, is now scoured for anything suggestive among all a dross, and this is photographed as a approach to save a picture from being mislaid among what a internet has become. Messinger is not a surrogate a Romantics were, he is a ‘curator’ combing for that that can rivet and enrich.

We Dream Alone by John Messinger during UNIX GalleryA grid can be used by an artist to rise perspective. Or a grid can be used to denote transformation or action. Muybridge, also mentioned in a notes, used a grid of photos to uncover how people changed by space. Here a grid is portion another function.  It provides a event for a origination of an over-all geometrically epitome picture comprised of a deficiency and participation of enchanting imagery.  The blue screen, not meant to ‘represent’ anything, nevertheless, when photographed and brought into a universe on a own, becomes as pacifying, if not some-more so, than a picture of a sea, waves, mountainous birds or clouds.  So what form of knowledge is Messinger sharpened for?  You can investigate any of these vast pieces and see a particular aspects of inlet being photographed, in contrariety to a vacant images, or we can step behind and be influenced by a altogether structure grown by resisting forms of images.  In possibly case, a artist awakens a clarity that there is some form of extraordinary, indefinable immanence to be gifted here. What a Romantics attempted to do by highlighting certain aspects of nature, Messinger tries to do, perhaps, by exercise and contrast. He starts his routine totally divorced from a healthy universe and works behind to find and benefaction an immanence as enchanting as that presented by a approach confront with nature.

Daniel Gauss Daniel Gauss (71 Posts)

Daniel Gauss is The Proletarian Art Snob. He is an MA connoisseur of Teachers College Columbia University, who combined his possess rarely successful art blog to cover some of a some-more engaging trends in a New York art stage (http://artgallerystuff.blogspot.com). The Proletarian Art Snob can be seen any week, in his barbarous art hat, movement by Chelsea and other neighborhoods uncovering a newest and many satirical artists rising in new York. He can be contacted during djg51qu@gmail.com

Red Hat Calls CloudFoundry a Unix of a Cloud [VIDEO]

In a universe of cloud Platform-as-a-Service (PaaS) technologies, there are now dual primary open-source competitors, a Red Hat corroborated OpenShift and a Pivotal corroborated CloudFoundry.

The CloudFoundry PaaS plan was strictly launched by VMware behind in 2011. In 2012, afterwards VMware CTO stated that his prophesy was for CloudFoundry to be, “the Linux of a cloud.”

VMware spun out a CloudFoundry record to a sister association Pivotal in 2013. Over a years,CloudFoundry has garnered a support of mixed vast IT vendors including IBM, that bases a BlueMix PaaS on it and HP with a Cloud Application PaaS.

Red Hat has been evolving a OpenShift PaaS height given 2011 as well. In a many new iteration, Red Hat released a OpenShift Enterprise 2.2 platform, providing formation with a Red Hat CloudForms cloud government platform.

Paul Cormier, EVP and President, Product and Technologies during Red Hat is not what anyone would call a CloudFoundry fan. In a video talk with Datamation, Cormier minute his views on a PaaS competition.

“CloudFoundry has a intensity to be Unix all over again,” Cormier said.

In a Unix market, fragmentation has been an emanate for decades. Cormier remarkable that if we demeanour during a CloudFoundry marketplace there are mixed vendors that make their possess flavors of CloudFoundry formed platforms.

“I consider it will be really formidable for applications to be concordant opposite a vendors’ opposite variations of CloudFoundry,” Cormier said.

Watch a full video talk with Paul Cormier below:



Sean Michael Kerner is a comparison editor during Datamation and InternetNews.com. Follow him on Twitter @TechJournalist

Photo pleasantness of Shutterstock.

Unix: Beyond owner, group, and everybody else

By Sandra Henry-Stocker

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ITworld |
October 26, 2014

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open close rupert ganzerflickr / Ruprt Ganzer

The prevalent approach of assigning record permissions on Unix systems is so tied into how people consider of Unix that many of us seem to forget that this intrigue was stretched many years ago to accomodate some-more than usually record owners, groups, and everybody else. The setfacl (set record entrance control lists) and getfacl (get record entrance control list) commands were designed to concede some-more than a normal singular assignment of privileges. While not disturing a prevalent owner-group-other permissions, we could, for example, give another comment hilt a same permissions as a owners or concede some-more than one organisation to have special entrance while not giving that entrance to usually everyone. Everything comes during some cost, however, and to use a setfacl and getfacl commands, a record complement has to be mounted with a special choice that allows these commands and a underlying enlargement of priviledges to be used. After all, there is over compared with gripping lane of a additional permissions, so we have to opt in by adding an choice to a record complement in a /etc/fstab record — a acl option. If we don’t, anyone perplexing to use these commands will approaching be confronted with an “operation not supported” error. You competence also have to check either your heart provides support for this feature. To mountain a record complement with a acl option, we will need to use a authority like this:

# mountain -t ext4 -o acl /dev/hdb3 /data

In a /etc/fstab, this same operation competence demeanour like this:

/dev/hdb3    /data    ext4  defaults,acl     0    1

Indications that a extended permissions are in use are rather subtle. You’ll usually see a + pointer during a finish of a normal permissions field. For example:

-rw-r-----+ 1 soft   admins 22088 Oct 26 recipe

That small + during a finish of -rw-r—–+ tells we that there are some-more permissions than a rw-r—– permissions fibre is vouchsafing on. And, if we wish to know more, we usually have to use a getfacl authority to arrangement a finish permissions for a file. For a record with usually prevalent permissions, we will see something like this:

$ getfacl beerlist
# file: beerlist
# owner: smitten
# group: admins
user::rw-
group::r--
other::---

This shows us what we routinely see in a prolonged listing, though in a opposite format. For a record with a extended permissions, on a other hand, a getfacl authority competence uncover we any additional permissions that have been set — like this:

$ getfacl beerlist
# file: beerlist
# owner: smitten
# group: admins
user::rw-
user:tsmiley:rw-
group::r--
mask::rw-
other::---

Notice that we now see another user (tsmiley) with review and write permissions and a new margin — a “mask” margin that sets default permissions for a file. You can set extended permissions regulating a setfacl command. Here are some examples where we give a user read, write and govern or supplement write permission.

setfacl -m u:tsmiley:rwx /data/example
setfacl -m u:tsmiley:+w /data/example

The -m stands for modify. The “u” in u: stands for user. You can allot permissions to groups as good as to individuals. You would allot a organisation permissions with a “g” as in a examples shown below.

setfacl -m g:devt:rwx /data/testcase
setfacl -R -m g:devt:+x testcases/
setfacl -m d:g:admins:rwx /data/scripts

In a third line in this example, a d: before a g: creates a new settings (rwx) a default for this directory. When files or direcxtories are combined underneath a /data/scripts directory, a admins organisation will have rwx accede to them as well. After environment a default, we can design to see these values when we use a getfacl authority in a form of an additional line that looks like this:

default:group::rwx

One of a other complexities that we are approaching to run into is a thought of a effective facade setting. If a facade is some-more limiting than a permissions that we grant, a facade will take precedence. In a instance below, a facade is r– and reduces a privileges given to a groups to r–.

$ getfacl /data/jumping.jar 
# file: /data/jumping.jar 
# owner: dbender
# group: users
user::rw-
group::rwx          #effective:r--
group:devt:rwx      #effective:r--
mask::r--
other::r--

To mislay extended permissions for a record or folder, we can use one of these commands. Remove all ACLs from a file:

setfacl -b /data/example

Remove a default ACL:

setfacl -k testcases

The facade environment is interesting. It will be set adult whenever permissions over those of owner, group, and other are used. As you’d review in a male page for a setfacl command, a facade is a kinship of all permissions from a owning group, named user and organisation settings. It can extent a permissions that are accessible though we can change a facade with a authority like this:

$ setfacl -m mask:rw- /data/example

Note that facade can be spelled (mask:) out or shortened to m (m:). Generally, it will be set to whatever permissions are dictated for a approaching collections of users and groups. You can also overrule this environment when we allot permissions by requesting that no facade be used with a -n or –no-mask setting. The normal Unix permissions are easy to consider about, though can be severely restrictive when we need some-more coherence in defining what several users or groups on your servers should be means to do. The newer ACL commands give we a lot some-more space in last who gets what permissions. You usually have to work a small harder to be certain they’re right.

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