Roundtable

roundtable@muug.ca

2555 discussions

command line question, cat and dd
by millward 09 Aug '02

09 Aug '02

I'm trying to write the file eb-5.0.7-via-rhine.lzdsk to a floppy diskette in /dev/fd0. When I did the following command: cat /home/ed/eb-5.0.7-via-rhine.lzdsk /dev/fd0 the screen filled with zeros and wierd characters and stayed that way after the command supposedly had finished writting the file to the floppy. I had to boot <Ctrl> <Alt> <Delete> since the keyboard was useless. No harm done. Everything seems OK after the boot. Using another floppy, I tried: dd if=/home/ed/eb-5.0.7-via-rhine.lzdsk of=/dev/fd0 obs=18k No problems with dd. The copy seemed to work quicker. My question is, are the two commands, dd and cat, equivalent for writting data to a floppy? And why did cat screw up my keyboard?

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Edsger Dijkstra: RIP
by gedetil＠cs.umanitoba.ca 08 Aug '02

08 Aug '02

Another legend in the world of computer science passed away... http://www.theregister.co.uk/content/4/26585.html Old age considered harmful... -- Gilbert E. Detillieux E-mail: <gedetil(a)cs.umanitoba.ca> Dept. of Computer Science Web: http://www.cs.umanitoba.ca/~gedetil/ University of Manitoba Phone: (204)474-8161 Winnipeg, MB, CANADA R3T 2N2 Fax: (204)474-7609

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KGostView no print PDF RH 7.3
by millward 08 Aug '02

08 Aug '02

I'm running Red Hat 7.3. The KDE KGostView pdf viewer won't print pdf files. It gives the message: "The file format application/x-zerosize is not directly supported by the current system." KGostView asks: "KDE convert this file to application/postscript ?" So I agree, but it fails and says: "no appropriate filter" My printer is an Epson 640 which I loath but can't afford to replace. RH 7.3 with KDE prints text OK. I've even printed a couple of HTML pages using Konqueror.. Anyone know how I can get KGostView to print PDF? The problem is not the printer. My system is multi-boot so I booted into Slackware 7.1 Gnome and used the Gnome Ghostview 0.95 to print the PDF file, no problem. But I don't really like Gnome and KGostView should do the job in Red Hat 7.3. What have I failed to do in Red Hat 7.3 ?

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RealOne Player
by Mel Seder 05 Aug '02

05 Aug '02

I had to go to Windows 98 to listen to a live "the other ones" concert. The second show played tonight. The first show was played live at Alpine Valley Music Theatre, just outside Milwaukee, last night. The band is who the grateful dead used to be minus Jerry. After the internet broadcast I started playing around with the RealOne media player and found the games section. What a nice experience that RealOne was. I hope RealOne gets ported to Linux so that it will run on Red Hat Valhalla 7.3. ===== "The sooner you make five thousand mistakes, the sooner you will be able to correct them." - Kimon Nicolaides __________________________________________________ Do You Yahoo!? Yahoo! Health - Feel better, live better http://health.yahoo.com

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UPS
by Brock Wolfe 02 Aug '02

02 Aug '02

Well its time to get out of the procrastination easychair and upgrade my UPS. I've used APC 500 and 625 VA UPS's on various PC's in the past. However these UPS don't seem to last, with electronics and batteries failing. I am looking to replace the smalller individual units with a single larger unit around 3000VA to support a server/network cluster. While batteries can't be expected to last forever, I am looking to improve the lifetime and reduce long term costs of providing UPS. The current individual UPS's will be be spun out to cover less critical PC's. Anyone with suggestions, testimonials, or works of advice on larger UPS installations. Or does this plan have an achillies heel? Brock Wolfe ___________________________________________________________ "The problem is not that there are problems. The problem is expecting otherwise and thinking that having problems is a problem." - Theodore Rubin __________________________________________________________

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ReiserFS
by Tim J. Adams 30 Jul '02

30 Jul '02

I am looking at using ReiserFS on a RedHat Linux 7.3 installation as a data drive. Can anyone give me some info on the stability of this fs? Opinions on whether it is better/as good as ext3? Thanks. Tim Adams Manager, IS Client Services Pollard Banknote Limited 1499 Buffalo Place Winnipeg, Manitoba R3T 1L7 1-204-474-2323 Extension 273

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Writing backups to Pioneer DVR-A04 DVD-RW writer.
by Scott Balneaves 12 Jul '02

12 Jul '02

Hello all, Here's one I can't figure out. Downloaded cdrtools-1.11.dvd.tar.gz, and compiled. Nice and clean worked like a champ. Wrote about 70 megs to the drive. Worked great. Here's the rub. I've got a 4.7 gig RW disk in the drive, and I'm trying to write 2.7 gigs or so of data. My output's below. Am I doing something wrong here? It says the data won't fit on the disk. Huh? Script started on Fri Jul 12 13:07:14 2002 [root@gandalf dump]# df -k Filesystem 1k-blocks Used Available Use% Mounted on /dev/hda1 505605 290572 188929 61% / none 127568 0 127568 0% /dev/shm /dev/hda5 7408260 2638208 4393732 38% /usr /dev/hda2 4127108 94856 3822604 3% /var /dev/hdb1 19694836 2533728 16160664 14% /dump [root@gandalf dump]# ls -al total 2533729 drwxr-xr-x 3 root root 4096 Jul 12 13:07 . drwxr-xr-x 20 root root 1024 Jul 12 11:07 .. drwxr-xr-x 2 root root 16384 Jul 12 11:06 lost+found -rw-r--r-- 1 root root 2591981568 Jul 12 11:16 usrdump.iso [root@gandalf dump]# /opt/schily/bin/cdrecord -v -dao dev=0,0,0 -data usrdump.isoo Cdrecord 1.11a08 (i686-pc-linux-gnu) Copyright (C) 1995-2001 Jörg Schilling TOC Type: 1 = CD-ROM scsidev: '0,0,0' scsibus: 0 target: 0 lun: 0 Linux sg driver version: 3.1.20 Using libscg version 'schily-0.5' atapi: 1 Device type : Removable CD-ROM Version : 0 Response Format: 2 Capabilities : Vendor_info : 'PIONEER ' Identifikation : 'DVD-RW DVR-104 ' Revision : '1.20' Device seems to be: Generic mmc2 DVD. Using generic SCSI-3/mmc DVD-R(W) driver (mmc_mdvd). Driver flags : SWABAUDIO BURNFREE Supported modes: PACKET SAO Drive buf size : 1638400 = 1600 KB FIFO size : 4194304 = 4096 KB Track 01: data 2471 MB Total size: 2838 MB (281:14.88) = 1265616 sectors Lout start: 2839 MB (281:16/66) = 1265616 sectors Current Secsize: 2048 Trying to clear drive status. /opt/schily/bin/cdrecord: Drive needs to reload the media to return to proper status. ATIP start of lead in: -150 (00:00/00) Disk type: unknown Manuf. index: -1 Manufacturer: unknown (not in table) /opt/schily/bin/cdrecord: Data will not fit on any disk. /opt/schily/bin/cdrecord: Cannot write CD's >= 100 minutes. [root@gandalf dump]# exit Script done on Fri Jul 12 13:09:10 2002 Weeeiiird. Any hints? Redhat 7.2 with current set of patches hosts the drive. Scott -- Scott L. Balneaves | "The mark of an immature man is that he wants Unix Administrator | to die nobly for a cause, while the mark of a Legal Aid Manitoba | mature man is that he wants to live humbly sbalneav(a)legalaid.mb.ca | for one." -- William Stekel

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Re: Contents of Roundtable digest...
by Quinn Wilson 12 Jul '02

12 Jul '02

Is there anything funny about the files in question? Do you have permissions on them? Are they regular files or special devices? Can you list them here? ~ ~ :qwilson@midworld.org - Lunky C++; Lunky do {;} > > Message: 1 > Date: Thu, 11 Jul 2002 08:38:21 -0700 > From: Brock Wolfe <obwolfe(a)shaw.ca> > To: "roundtable(a)muug.mb.ca" <roundtable(a)muug.mb.ca> > Reply-to: Wolfe <obwolfe(a)shaw.ca> > Subject: [RndTbl] stuck in tar > > After cloning a hard disk I discovvered missing files on the target hard > drive. After looking around it seems that tar did not include files from > multiple locations on the source hard drive. In a specific case it failed > to include 6 files from the /sbin directory. > The tar command used (login as root) on the source disk ( RH 7.1, ext2 ) > was : > > tar cvplf /var/tmp/root.tar / > > Repeating this exercise on a (RH 6.2 ext2) box did not duplicate the > problem of missing 6 files. > > Repeating the following command on the orginal source disk (RH7.1 ext2) > reproduced the problem of missing 6 files.. > > tar cvplf /var/tmp/sbin.tar /sbin > > I would just move these 6 files over by other means but there are too many > files in other partitions missing to make this practical. > > Any ideas on the source of the problem? > > > > > > > Brock Wolfe > ___________________________________________________________________ > "Obstacles are those frightful things you see when you take your eyes off > your goal." > --- Henry Ford > ___________________________________________________________________

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RE: stuck in tar
by Brock Wolfe 11 Jul '02

11 Jul '02

Well after more digging found that the files not included in tar archive were tied to hard links. Displayed by find command: find . -type f \! -links 1 -prinff "%i %n %p\n" | sort -n Now I need a solution to cloning a partition that clones hard links correctly. - tried drivecopy ( died on CRC error ) - dd incorrectly writes one less sector than read on partions with odd numbered sectors Brock Wolfe ___________________________________________________________________ "Obstacles are those frightful things you see when you take your eyes off your goal." --- Henry Ford ___________________________________________________________________

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stuck in tar
by Brock Wolfe 11 Jul '02

11 Jul '02

After cloning a hard disk I discovvered missing files on the target hard drive. After looking around it seems that tar did not include files from multiple locations on the source hard drive. In a specific case it failed to include 6 files from the /sbin directory. The tar command used (login as root) on the source disk ( RH 7.1, ext2 ) was : tar cvplf /var/tmp/root.tar / Repeating this exercise on a (RH 6.2 ext2) box did not duplicate the problem of missing 6 files. Repeating the following command on the orginal source disk (RH7.1 ext2) reproduced the problem of missing 6 files.. tar cvplf /var/tmp/sbin.tar /sbin I would just move these 6 files over by other means but there are too many files in other partitions missing to make this practical. Any ideas on the source of the problem? Brock Wolfe ___________________________________________________________________ "Obstacles are those frightful things you see when you take your eyes off your goal." --- Henry Ford ___________________________________________________________________

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