Roundtable

roundtable@muug.ca

2555 discussions

stderr/stdout in Linux cronjobs?
by Grigory Shamov 23 Jan '15

23 Jan '15

Hi All, I have a weird (or stupid idk) problem. A script of mine produces different results when ran interactively as root, from when ran as a cron job. used=`report -i --csv 2>/dev/null | awk '/Total/ {print $4}'` echo $used is Total The command executed says "Using config file XXX" to stderr and something useful to stdout of which I extract the value of Total. Redirecting the barf to /dev/null. Now as a cron job the $used is empty. I believe that cronjob would redirect stderr to stodut? But here it happens also for the subprocesses ? Confused.. -- Grigory Shamov Westgrid/ComputeCanada Site Lead University of Manitoba E2-588 EITC Building, (204) 474-9625

2 1

Re: [RndTbl] Roundtable Digest, Vol 121, Issue 10
by Kat 23 Jan '15

23 Jan '15

Is Notepad++ too low-brow for what you want? If I want WYSIWYG-style, I just load the page in a web browser. I love that program to pieces. I'm working on custom markup for our Meru logs. On 22 January 2015 at 12:00, <roundtable-request(a)muug.mb.ca> wrote: > Send Roundtable mailing list submissions to > roundtable(a)muug.mb.ca > > To subscribe or unsubscribe via the World Wide Web, visit > http://www.muug.mb.ca/mailman/listinfo/roundtable > or, via email, send a message with subject or body 'help' to > roundtable-request(a)muug.mb.ca > > You can reach the person managing the list at > roundtable-owner(a)muug.mb.ca > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of Roundtable digest..." > > > Today's Topics: > > 1. web design software (Trevor Cordes) > 2. Re: web design software (Wyatt Zacharias) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Thu, 22 Jan 2015 04:43:27 -0600 > From: Trevor Cordes <trevor(a)tecnopolis.ca> > To: roundtable(a)muug.mb.ca > Subject: [RndTbl] web design software > Message-ID: <20150122104327.GA11789(a)pog.tecnopolis.ca> > Content-Type: text/plain; charset=us-ascii > > Can anyone recommend web design / editing software that is free (beer) > that runs on (gasp) Windows (and Linux too would be nice, but Windows is a > must). I'm talking about something for non-programmer-type semi-"power > user" people. Doesn't need fancy AJAX / HTML5 / CSS3 stuff, just a basic > editor to let non-technical people edit existing static HTML. > > Basically FrontPage, but free. And preferably not something that is more > mal/ad/spy than ware. > > (No, it's not for me...) > > > ------------------------------ > > Message: 2 > Date: Thu, 22 Jan 2015 09:13:10 -0600 > From: Wyatt Zacharias <wyatt(a)magitech.ca> > To: Continuation of Round Table discussion <roundtable(a)muug.mb.ca> > Subject: Re: [RndTbl] web design software > Message-ID: > <CANd2pR3G+ohVwicCV97si= > ubAT_7ADfrx7e4ZUZQtUqaA-Cxig(a)mail.gmail.com> > Content-Type: text/plain; charset="utf-8" > > Take a look at http://kompozer.net/ it's open source from the mozilla > foundation. > > -- > Wyatt Zacharias > > > On Thu, Jan 22, 2015 at 4:43 AM, Trevor Cordes <trevor(a)tecnopolis.ca> > wrote: > > > Can anyone recommend web design / editing software that is free (beer) > > that runs on (gasp) Windows (and Linux too would be nice, but Windows is > a > > must). I'm talking about something for non-programmer-type semi-"power > > user" people. Doesn't need fancy AJAX / HTML5 / CSS3 stuff, just a basic > > editor to let non-technical people edit existing static HTML. > > > > Basically FrontPage, but free. And preferably not something that is more > > mal/ad/spy than ware. > > > > (No, it's not for me...) > > _______________________________________________ > > Roundtable mailing list > > Roundtable(a)muug.mb.ca > > http://www.muug.mb.ca/mailman/listinfo/roundtable > > >

1 0

X11 forwarding through SSH after su/sudo
by Adam Thompson 23 Jan '15

23 Jan '15

Turns out, at least on RHEL/Centos-style systems, if you run su(1) or sudo(8) after ssh'ing into a system, you can't run X11 apps from the su{do}'d user because of the way SSH handles X authentication there - it puts the Xauth cookie into the .Xauthority file instead of an environment variable. I'm seeing references that Ubuntu & Debian don't behave like this, but don't have a live system to confirm. I vaguely recall HPUX not behaving like this, and I don't care enough to test on *BSD right now. Since I regularly need to su/sudo to another identity on a remote CentOS system, and it's a shared system, I don't want to gratuitously grant wide-open connection to my local X display; I at least want to limit the window of vulnerability... it doesn't look like I can eliminate it entirely. Here's the best work-around I could come up with. I think it manages to avoid exposing the Xauth data or anything else, but potentially requires you to enter your password more than once if sudo(8)'s cache has expired. It also allows someone else su'd into that userid *at the same time as me* to access my Xauth cookies, but that's an acceptable window of risk for me since the cookie becomes invalid after I disconnect the SSH session. Plus, I'm not the only person with root, so that vulnerability exists no matter what :). > #!/bin/sh -e > U=someuserid > D=${DISPLAY/*:} > E="$(hostname)/unix:${D%.0}" > xauth extract - "$E" | sudo -u "$U" -- xauth merge - > if [ -z "$*" ]; then > sudo -u "$U" -i > else > sudo -u "$U" -- "$@" > fi > sudo -u "$U" -- xauth remove "$E" Unfortunately, ssh(1)/sshd(8) sets DISPLAY to something like localhost:NN.0, but xauth has it recorded internally as FQDN/unix:NN ... these two $DISPLAYs are equivalent, but don't parse the same way on the command-line, hence the ugly manipulation. I think this chunk of code is safe from obvious exploits (or errors), but dissenting opinions are welcome. N.B. long-time shell users will cringe at seeing $* instead of $@, but it turns out to be correct in this case: $@ *doesn't work* there. The reason why is left as an exercise for the reader :-). -- -Adam Thompson athompso(a)athompso.net

1 0

web design software
by Trevor Cordes 22 Jan '15

22 Jan '15

Can anyone recommend web design / editing software that is free (beer) that runs on (gasp) Windows (and Linux too would be nice, but Windows is a must). I'm talking about something for non-programmer-type semi-"power user" people. Doesn't need fancy AJAX / HTML5 / CSS3 stuff, just a basic editor to let non-technical people edit existing static HTML. Basically FrontPage, but free. And preferably not something that is more mal/ad/spy than ware. (No, it's not for me...)

2 1

parallel port
by Trevor Cordes 12 Jan '15

12 Jan '15

Having some parallel port issues (ok, stop laughing!). Can some people with parallel ports on their mobos (real ones, not usb-based ones) send me the output of: tail -c+1 /proc/sys/dev/parport/parport0/{autoprobe,base-addr,dma,irq,modes} I'm especially interested to see what you get if you have ECP mode set in the BIOS. Also: dmesg |grep parport or grep parport /var/log/messages My 2008 motherboard refuses to let linux use ECP, even though the BIOS says ECP. EPP seems to work, but doesn't give me a DMA. Other boards I've checked use EPP and DMA. Without DMA, cups printing uses I/O polling and is ***SLOW*** and uses 100% cpu for 30s per page. Ouch. To the zero people who are interested in the bugzilla, here's a link: https://bugzilla.redhat.com/show_bug.cgi?id=1180396

2 4

weird a.out in /var/log/httpd
by Trevor Cordes 08 Jan '15

08 Jan '15

Uh oh. Finding an a.out in your /var/log/httpd doesn't instill a warm fuzzy feeling. I have ~ 4k a.out there dated Oct 12, which unfortunately is just past my logrotate cutoff now, so I can't check access.log (drat) without hitting the (hard to hit) backups. file a.out a.out: ELF 32-bit LSB executable, Intel 80386, version 1 (SYSV), dynamically linked (uses shared libs), not stripped I fired up a live-cd linux with no disks or net attached to try to run it (I put it on a usb stick). But when I do *the shell* returns ENOENT and won't run. I tried ./a.out. I tried moving it to a fs that shouldn't be mounted noexec. I tried strace a.out and strace ./a.out and strace shows only the exec attempt and the error print and quit. Huh? How can I get this thing to run? Anyway to see what it is doing? Disassemble? It is not stripped, so gdb? How can I step-run it from the start (ie nothing executes until I step)? What else to do with this file? I'll see if I can dig up the access.log from that date and get more details.

4 5

MUUG Meeting, Jan 13, 7:30pm -- Arduino Networking
by Gilbert E. Detillieux 06 Jan '15

06 Jan '15

The Manitoba UNIX User Group (MUUG) will be holding its next monthly meeting on Tuesday, January 13. The meeting topic for this month is as follows: Arduino Networking For the main presentation, Wyatt Zacharias will be presenting how to use the Arduino networking shield as both a client or server in your network, and how it can be integrated with other Arduino peripherals. This month's RTFM segment will be reposync(1), by Adam Thompson. Reposync is used to synchronize a remote repository to a local directory. The group holds its general meetings at 7:30pm on the second Tuesday of every month from September to June. (There are no meetings in July and August.) Meetings are open to the general public; you don't have to be a MUUG member to attend. ***************************************************************** Please note our *NEW* meeting location for this month: Room 1M28, Manitoba Hall, University of Winnipeg, entrance on Ellice Ave. between Spence St. and Balmoral St. Parking is available on the surrounding streets and in the lots on nearby streets. Look for signage once you're at the building, or ask a security guard. ***************************************************************** For more information about MUUG, and its monthly meetings, check out their Web server: http://www.muug.mb.ca/ Help us promote this month's meeting, by putting this poster up on your workplace bulletin board or other suitable public message board: http://www.muug.mb.ca/meetings/MUUGmeeting.pdf -- Gilbert E. Detillieux E-mail: <gedetil(a)muug.mb.ca> Manitoba UNIX User Group Web: http://www.muug.mb.ca/ PO Box 130 St-Boniface Phone: (204)474-8161 Winnipeg MB CANADA R2H 3B4 Fax: (204)474-7609

1 0

creating wifi-capable speakers
by Kat 05 Jan '15

05 Jan '15

There are a few things I want to set up for audio / media in my house. The house isn't very large, but it has two levels, plus the basement (which is living space, and where my linux box is). My linux box is my media server (well, it usually is, but my partition table has disappeared on one drive and... that's a whole other story.) I am thinking about speakers at least in the kitchen and the bedroom. Converting the sound system hooked up to my TV would be nice, too. I don't like the range on bluetooth for this application. The $25 1x2" bluetooth gadget I have plugged into my living room sound system is ok, but doesn't seem to have the range or behaviour I'd like, in actuality. So I was thinking about wifi. However wifi speakers are quite expensive, and seem very overpriced to me ($250-$800? Seriously?) Like my little $25 bluetooth->3.5mm gadget, I was hoping to find something simple like that in wifi flavour, but I haven't come across anything. Do these even exist? The other option is getting a Raspberry Pi (which has wifi or ethernet and a 3.5mm audio jack) and setting up as a DLNA client for speakers / speakers systems that have a 3.5 input. When researching this they often talk about setting up the Pi and also setting up a phone to be the client that selects the music or playlist, but it occoured to me that my old HTC phone has both wifi and a 3.5 input.... so I can probably just use the phone to perform the function "as the Pi" in one of my three areas. I can use my current phone or tablet as the control devices. Has anyone here mucked around with this stuff already? Any warnings for this setup, or alternate recommendations? My HTC phone is currently unrooted and running Gingerbread, I think. I will know when I can find the proprietary charger. No objections to rooting it and trying to install whatever I please on there. My current phone is a Blackberry, but I'm running Snap. My tablet is also running Android (KitKat). -- ------------------------------------------------------------ Katherine Scrupa Network Technology CCNA, Hons.

3 2

Fwd: Invitation to attend "Innovation Alley" Premiere
by Bill Reid 03 Jan '15

03 Jan '15

Hi Friends! I’d like to personally invite you to attend the world premiere of “Innovation Alley”. It’s a documentary about the work myself and others have been doing to create a new kind of facility enabling anyone to transform their ideas into new and successful businesses in our city. Our project has been incredibly successful over the past three years; the documentary shows how we got it done and how it could change our city’s future. We’ve organized a very special premiere of the documentary for 6PM Friday, January 16th at the Burton Cummings theatre - and I’d like you to attend, if you can. There’s no charge; all you need to do is register here: http://www.eventbrite.ca/e/innovation-alley-documentary-premiere-tickets-14… Please come! Pass this invitation around to anyone you feel would be interested - Everyone is welcome to attend. Kerry Stevenson Director, StartUp Winnipeg, AssentWorks

3 2

Merry Christmas
by Bill Reid 25 Dec '14

25 Dec '14

Not seen this before. Cute traceroute xmas.futile.net

1 0

Jump to page:

2025

2024

2023

2022

2021

2020

2019

2018

2017

2016

2015

2014

2013

2012

2011

2010

2009

2008

2007

2006

2005

2004

2003

2002

2001

2000

Roundtable