Linuxers February 2013

linuxers@mm.ilug-bom.org.in

20 participants
19 discussions

How to detect a power failure?
by Binand Sethumadhavan 06 Apr '13

06 Apr '13

I am thinking of something like a mobile charger that would plug in a regular 3-pin plug at one end and a computer at the other, and some software/sensor combo that would read the (DC) voltage at the computer end. If there is no voltage, there is no power in the mains and ergo - we are in the middle of a power outage, so take action. Know of something along these lines? (idea is to detect power failures, while powered by a "dumb" UPS unit - one that cannot communicate with the a computer. Any other solutions/suggestions?). Binand

7 9

Re: [ILUG-BOM] Ubuntu Global Jam Mumbai 2013 for Ubuntu Raring Ringtail
by Rigved Rakshit 07 Mar '13

07 Mar '13

> The dates are tentative because Canonical themselves have not released > the dates. Once that is done, I will let you guys know the final > dates. This is one of the "problems" of planning events ahead of time. > But I am hoping that this will give everyone enough time to plan and > attend the event! Dates have been finalised. Now, it will be on March 2 and 3. Here is the event page: http://loco.ubuntu.com/events/indian-team/2235/detail/ . As of now, I have kept the event only on Saturday and Sunday. But if people are interested, I can keep it on Friday as well. Best Regards, Rigved Rakshit

2 3

Using grep 'AND'
by gnulinuxist＠gmail.com 01 Mar '13

01 Mar '13

Hello, I am using a script where I check if /home and /backup are present in /etc/mtab but can't manage the 'and' operator in grep. Currently I use the 'if grep -q "/home" ; then ......... then I do 'fi' and again 'if grep -q "/backup" to finally go to my commands. I tried to make grep do the AND combo but got errors as it works only on one line. I want my command to start only if both /home and /backup are present in mtab. With my dual check method it works, but I want a clean lean script. Regards, Rony.

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Re: [ILUG-BOM] Using grep 'AND'
by gnulinuxist＠gmail.com 01 Mar '13

01 Mar '13

-----Original Message----- From: Rajeev R. K. Here you go..... mount | grep -q home HOMESTATUS=$? mount | grep -q backup BACKUPSTATUS=$? if [ $HOMESTATUS -eq 0 -a $BACKUPSTATUS -eq 0 ]; then echo "You got both man, do your thing..." exit 0; else echo "Error -- either home or backup missing -- Or is it BOTH !%$!!@#%!" exit 1; fi Regards R. K. Rajeev Thanks Rajeev and Binand for your tips. I noticed a '-a' option in the if statement so will this below work? If [grep -q "/home" mtab -a grep -q "/backup" mtab ] then......... Regards, Rony.

4 3

Re: [ILUG-BOM] Using grep 'AND'
by gnulinuxist＠gmail.com 28 Feb '13

28 Feb '13

Thanks friends, I will try out combos and post my final script once I get on that server again.

1 0

UEFI shenanigans
by J T Dsouza 28 Feb '13

28 Feb '13

Linus gets it spot on. http://www.zdnet.com/torvalds-clarifies-linuxs-windows-8-secure-boot-positi…

1 0

Ankit Fadia redux...
by Binand Sethumadhavan 27 Feb '13

27 Feb '13

http://forbesindia.com/article/beyond-business/ankit-fadia-revealed/34793/0 (Charles Assisi is an editor at Forbes). Binand

7 8

Opinion solicited for an article
by Priyanka Sarkar 24 Feb '13

24 Feb '13

Dear All, One of our journalists is doing a story on 'How safe is rooting your android phone? Or is it worth rooting your android phone. Would be great if we get some great inputs from you on the same. Please let us have your your opinion/ views. Regards, Priyanka

3 4

Re: [ILUG-BOM] Unable to reactivate a RAID10 mdadm device
by Arun Khan 23 Feb '13

23 Feb '13

On Tue, Feb 12, 2013 at 1:53 PM, Arun Khan <knura9(a)gmail.com> wrote: > > Any help in solving this problem would be highly appreciated. > Fortunately, I have been able to recover the data due to sheer luck! For details please see <http://marc.info/?l=linux-raid&m=136163159413360&w=2> -- Arun Khan

1 0

Ml woes
by J T Dsouza 21 Feb '13

21 Feb '13

host mm.ilug-bom.org.in [74.207.228.67]: 450 4.7.1 <mail.sparc.net>: Helo command rejected: Host not found exim4 -Mvh 1U7A6g-0002Re-Q9 1U7A6g-0002Re-Q9-H Debian-exim 102 102 <jtd(a)mtnl.net.in> 1361130062 0 -helo_name debamd.localnet -host_address 192.168.0.16.43515 -host_name debamd.sparc.net -interface_address 192.168.0.8.25 -received_protocol esmtp -body_linecount 46 -max_received_linelength 81 XX 1 linuxers(a)mm.ilug-bom.org.in 234P Received: from debamd.sparc.net ([192.168.0.16] helo=debamd.localnet) by mail.sparc.net with esmtp (Exim 4.69) (envelope-from <jtd(a)mtnl.net.in>) id 1U7A6g-0002Re-Q9 for linuxers(a)mm.ilug-bom.org.in; Mon, 18 Feb 2013 01:11:02 +0530 022F From: jtd(a)mtnl.net.in 032T To: linuxers(a)mm.ilug-bom.org.in 055 Subject: Re: [ILUG-BOM] How to detect a power failure? 038 Date: Mon, 18 Feb 2013 01:22:24 +0530 And exim -brw jtd(a)mtnl.net.in sender: jtd(a)mtnl.net.in from: jtd(a)mtnl.net.in to: jtd(a)mtnl.net.in cc: jtd(a)mtnl.net.in bcc: jtd(a)mtnl.net.in reply-to: jtd(a)mtnl.net.in env-from: jtd(a)mtnl.net.in env-to: jtd(a)mtnl.net.in I am fairly sure nothing has changed in the local mail server since 2005. Mails to the list were just fine until it came back online after the last years outage. HELP. I hate mail servers.

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Linuxers February 2013