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Re: [ALUG] Gentoo kernel installation hangs while removing something under /var
by Jim Rippon 12 Jun '09

12 Jun '09

Dan, Sounds like your var partition had filled up perhaps - what size was the partition you had mounted? Don't know your experience with Gentoo, but it extracts package sources under /var/tmp/portage/$(package_name) and compiles them therein so you need to have a fair amount of space in /var in order to extract/build larger packages (openoffice, firefox, kernel etc). Jim ----- Original Message ----- From: "Dan Hatton" <vi5u0-alug(a)yahoo.co.uk> To: "Anglia Linux Users' Group" <main(a)lists.alug.org.uk> Sent: Friday, 12 June, 2009 13:04:47 GMT +00:00 GMT Britain, Ireland, Portugal Subject: [ALUG] Gentoo kernel installation hangs while removing something under /var Dear All, Any idea what might be going on in the following, please? I'm installing Gentoo from the latest (20090606, IIRC) installation CD, on a new machine. I followed the handbook as far as attempting to install a kernel with emerge tuxonice-sources (I also tried the more standard emerge gentoo-sources, with the same symptoms). The emerge process (or rather, a process started by it) hangs just after applying patches to the kernel. top reveals that almost all the CPU is being taken up by an attempt to rm something under $(chroot)/var. the exact pathname of the "something" scrolled off-screen before I could catch it, but it looked like it was probably a directory full of patches. When I killed the rm process, emerge carried on nicely, and put a kernel source tree where I'd expect it, in $(chroot)/usr/src. That kernel configured OK, and at least started to compile OK before I had to leave it to go do my day job. So what's the problem, apart from that it's kind of inelegant for an install process to hang and need special measures by the user? If this sort of thing happens on other packages too, the stuff that should have been rm'd and hasn't will pretty quickly fill the small partition I've mounted as $(chroot)/var. Possible explanations welcome. -- Thanks, Dan _______________________________________________ main(a)lists.alug.org.uk http://www.alug.org.uk/ http://lists.alug.org.uk/mailman/listinfo/main Unsubscribe? See message headers or the web site above!

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Gentoo kernel installation hangs while removing something under /var
by Dan Hatton 12 Jun '09

12 Jun '09

Dear All, Any idea what might be going on in the following, please? I'm installing Gentoo from the latest (20090606, IIRC) installation CD, on a new machine. I followed the handbook as far as attempting to install a kernel with emerge tuxonice-sources (I also tried the more standard emerge gentoo-sources, with the same symptoms). The emerge process (or rather, a process started by it) hangs just after applying patches to the kernel. top reveals that almost all the CPU is being taken up by an attempt to rm something under $(chroot)/var. the exact pathname of the "something" scrolled off-screen before I could catch it, but it looked like it was probably a directory full of patches. When I killed the rm process, emerge carried on nicely, and put a kernel source tree where I'd expect it, in $(chroot)/usr/src. That kernel configured OK, and at least started to compile OK before I had to leave it to go do my day job. So what's the problem, apart from that it's kind of inelegant for an install process to hang and need special measures by the user? If this sort of thing happens on other packages too, the stuff that should have been rm'd and hasn't will pretty quickly fill the small partition I've mounted as $(chroot)/var. Possible explanations welcome. -- Thanks, Dan

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Long UTF-8 message in Subject!!!
by Ted.Harding＠manchester.ac.uk 12 Jun '09

12 Jun '09

Greetings, Folks! This morning I received a message from the local Police via the Cambs "ECops" mailing list (which I subscribe to -- it's a sort of community bulletin board for local policing matters). The message itself was in effect empty -- just the statutory "footers" that appear in every such message. The subject-line (as displayed on my mailer) just said: =?UTF-8?B?RS1Db3BzIC0gVGl0bGUgLSBBY3Qgbm93IGFuZCBhdm9pZCBhICdjYX But then I opened up the full headers. Lo and behold, there was a massive Subject: therein! It would seem that the sender had typed the entire message into the subject-line! However, not only does it claim to be UTF-8, but is also somehow encoded. I can't make it out. So your puzzle for the weekend is to find out what it says! It's unsuitable (lines too long, and some already broken anyway) to paste into the body of this message, so I'm attacheing it as a plain-text file (but exactly as it came up on my screen) subject.txt Any takers? Ted. -------------------------------------------------------------------- E-Mail: (Ted Harding) <Ted.Harding(a)manchester.ac.uk> Fax-to-email: +44 (0)870 094 0861 Date: 12-Jun-09 Time: 09:57:13 ------------------------------ XFMail ------------------------------

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Re: [ALUG] AV manipulation
by Mark Rogers 11 Jun '09

11 Jun '09

nev young wrote: > I use Avidemux and find it will do just about anything. > Re-sync is a bit more complex than just <- and -> as you have to enter > a signed number for the millisec time shift. Does that make it a case of trial & error (shift the audio a bit, play the new video, shift the audio a bit more, etc)? > It's fairly fast, on my PC using the copy mode with a time shift will > do a 1hr divx file in about 40 seconds. To be honest I don't really care if it takes a couple of hours to do the actual conversion (although I'd expect something quick, like you suggest). It's the trial & error bit that's the bit I'm trying to make simple; the problem is I don't know how many millisec I need to shift the audio, I just know that it's wrong at the moment! -- Mark Rogers // More Solutions Ltd (Peterborough Office) // 0845 45 89 555 Registered in England (0456 0902) at 13 Clarke Rd, Milton Keynes, MK1 1LG

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AV manipulation
by Mark Rogers 09 Jun '09

09 Jun '09

I have two AV tasks I need to perform, which are otherwise unrelated... 1. I have some video for which the sound is out of sync. The video files use an XviD codec (not sure what sound codec). I'm looking for a tool to allow me to correct them. Ideally I want something I can just use left/right arrow keys to jog the sound a small amount ahead or behind the video until it's correct, then hit save to create a new file. It all ought to be pretty quick (no recompression needed, just re-synchronising). Any suggestions? 2. I want to take some audio files and slow them down (quite a lot) without changing their pitch. I'm trying to learn to play the guitar and I can't play fast enough to play alongside anything yet unless I can slow it right down! My desktop is Ubuntu 9.04 if that's relevant. -- Mark Rogers // More Solutions Ltd (Peterborough Office) // 0845 45 89 555 Registered in England (0456 0902) at 13 Clarke Rd, Milton Keynes, MK1 1LG

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Printing suddenly changed to monochrome only
by Barry Samuels 07 Jun '09

07 Jun '09

I have recently changed over to CUPS in my Debian system although I don't think that caused the problem. I have an HP Colour LaserJet 4500 which will happily print a test page from the printer menu which includes colour so no problem there. However in the CUPS setup the only options I get are 'Grayscale' or 'Inverted Grayscale'. The driver selected is 'HP Color LaserJet 4500 - CUPS+Gutenprint v5.2.3 (en)' and the printer will print only in monochrome. Any ideas? -- Barry Samuels http://www.beenthere-donethat.org.uk The Unofficial Guide to Great Britain

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Eee and root
by Anthony Anson 07 Jun '09

07 Jun '09

To install a program I presume I have to be root. I can't remember ever giving the Eee a root password, nor for that matter, ever being asked for one. I want to put a link to Thunderbird on the 'Internet' page, but I can't drag the icon (kicking and screaming, or not), nor can I copy and paste the icon. Unfortunately, I've filed the book of destructions 'somewhere safe'... HELLLLLP! -- Tony

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Globbed search for filenames in website
by Ted.Harding＠manchester.ac.uk 07 Jun '09

07 Jun '09

Greetings! I'm looking for a way to find out what files for a particular wild-card form exist at a certain directory depth on a website. For example: www.some.web.page/*/*.png for all PNG files 1 below the top level. The results to be listed (stored in a file) along the lines of what you would get from ls */*.png if you were at the top level on the server. A browser won't do it (won't accept wild-cards). I've looked at wget, but this doesn't seem to have a simple listing option (except under ftp mode, which the remote site won't respond to). Any suggestions? With thanks, Ted. -------------------------------------------------------------------- E-Mail: (Ted Harding) <Ted.Harding(a)manchester.ac.uk> Fax-to-email: +44 (0)870 094 0861 Date: 07-Jun-09 Time: 08:41:32 ------------------------------ XFMail ------------------------------

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fcron or anacron
by Peter Alcibiades 04 Jun '09

04 Jun '09

Have you ever used either of these? I want to use fcron to run a command every 20 or 30 hours of machine uptime, but cannot figure out exactly where to put the command or how to get it there. Peter

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Re: [ALUG] MySQL Joins
by Jim Rippon 03 Jun '09

03 Jun '09

Mark, >What I have so far is: >SELECT tbl1.email AS email1, tbl2.email AS email2 >SELECT IF(tbl1.email IS NOT NULL, tbl1.email, tbl2.email) as email >FROM tbl1 LEFT JOIN tbl2 USING (email) > >.. which will get me all the addresses from tbl1, with the matching >address from tbl2 in email2 or NULL if there is no match. > >What I want is to also get all the addresses in tbl2, with NULL against >email1 where there is no match. That is what I thought an OUTER join did >but it seems I'm wrong. An OUTER join can be a LEFT or RIGHT join like this: SELECT tbl1.email AS email1, tbl2.email AS email2 FROM tbl1 LEFT OUTER JOIN email2 USING (email); will show you all the records from the left table (in this case tbl1) and NULL for any records that didn't appear in the right table (tbl2). Perhaps what you want is a union query: SELECT DISTINCT email FROM tbl1 UNION SELECT DISTINCT email FROM tbl2 ORDER BY email; This should give you one result for each distinct entry between the two tables, if I understand it correctly. Worked for my (admittedly very small) test db. Hope this helps, Jim

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