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Pierre Baco

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About Pierre Baco

  • Birthday 01/04/1958

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    anything, except brain transplant

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  1. No, that won't do: it requires a chgrp on the dirs. I want user admin to manage a dir just like user root would do, whatever the user and group owners of the dir are.
  2. Hi. I'm looking for a way to grant temporarily all rights to a user on a specific dir, like sudo lets a user run specific command with root privileges. In other words, I'd like to have an "admin" user able to cleanup the /home dir and only this one, e.g. read/write/delete anything. A kind of "sudo grant_all /home". Any idea ? Pierre
  3. Yep, you'll access your Linux server directories from your Linux workstations just like a Windows share, i.e. no permissions, no links, etc, + all the SMB hassle (including user/group mess for shares shared with windows users and poor basic features.) Linux to Linux: keep NFS. Why do you want to remove it ? Once set, it's much better and transparent.
  4. Ok. Looks like there's no feedback on this one. Never mind. Let's close it.
  5. /sbin/ifconfig -a If it displays a paragraph concerning "sit0" ipv6, then add the following line to your /etc/modprobe.conf file: alias net-pf-10 off Then reboot your machine (I've never been able to fully disable ipv6 without rebooting. Stopping/restarting the network is not enough).
  6. I had similar hard times once. Found it was a LAN/WAN problem with ipv6 (now disabled) and NFS (bad configuration). Firefox still gives me the same symptoms from time to time (freezing the whole machine for a few seconds while trying to access some poorly written sites). Looks like it's locked waiting for something or spinning in a tight loop). It could come from hard disks too. Have you seen something about "disabling DMA" or "spurious interrupts" in your logs ?
  7. 'llo guys. I'm looking for a hassle-free, fully recognized, well known and easy to find/purchase AMD 64 motherboard to build my new LE2005 machine. This machine will be my new main station: - 2 x 17" flat screens with xinerama (what I'm using now): no games, no 3D addiction. Don't need PCI Express or ultra powerful video. - 1 GB Ram (maybe 2) - 2 x 120 Go hard disks (SATA or IDE, not sure yet, as SATA support is often problematic). No RAID, simple initial dd + rsync twice a day. Full ext3 partitions (no dual boot). - 1 Gbits (LAN) + 1 100 Mbits (WAN) ethernet. - DVD + floppy (just in case) + 4 USB. No Firewire, no wireless LTSP to support 3 thin clients + Apache, Squid, Samba (3 other clients)) + development platform (PHP, C) + VMWare (one virtual XP ws). This machine will run 24/24 7/7. I've visited many forums to find the right AMD 64 socket 939 (I guess socket 754 won't be there for long) mobo for Linux. I've read many contradictory comments and now I'm lost. Don't want to spend a fortune (< 150/200€) for the mobo. Don't want to play with extra-special non free drivers. Don't need overclocking. Don't want to order it in deep Nebraska or Singapore. Now, I'm not even sure AMD64 is the right choice. Should I stick to 32 bits for a year or two, while 64 bits support is improving ? But is it still a good investment to buy a brand new 32 bits machine today ? So if you're the happy owner of a fully functional 64 bits Linux machine, describe your configuration. And if you're not happy, give your feedback too. Thanx Pierre
  8. Pierre Baco

    LTSP?

    I use LTSP a lot, on debian and mandrake. At home, I've 3 thin clients (fanless, pxe boot). I've recently installed a primary school with 18 thin clients (and/or recycled PCs) around a debian+ltsp server. Works like a charm. For this number of clients, a 100/1000 switch and server network board is recommended. Really easy to setup (except network sound and USB on clients)
  9. Too late: human rights are already patented.
  10. Thanks. I'm gonna exclude /sys just like I did with /proc and give a try to reboot with the spare disk after a full rsync. Pierre
  11. Hi guys (and girls). I'm working on a simple script to mirror my partitions on a spare disk using rsync, and I've a question about the /sys dir: should I rsync it or just exclude it ? What I want is a spare disk I could swap with the original one in case of serious trouble. Both disks (hda and hdc) have the same size. I've just 2 partitions (/ and /home) on hda. I've done a first dd if=/dev/hda of=/dev/hdc to duplicate the whole disk including MBR. Now I want to run a rsync script every night to update hdc, something like mount /dev/hc1 /mnt/sync_dir rsync -uravH --delete --exclude-from=exclude_root.lst / /mnt/sync_dir umount /mnt/sync_dir mount /dev/hc2 /mnt/sync_dir rsync -uravH --delete --exclude-from=exclude_home.lst /home /mnt/sync_dir umount /mnt/sync_dir It works fine (0 errors) for /home but I get a rsync error 23 ("some files could not be transfered") while rsync'ing / when /sys is not in the exclude_root.lst file, which looks like: /proc /mnt /home /etc/fstab /tmp I know /sys has something to do with udev and hotplugging. Is it safe to exclude it ? (i.e. Will the spare disk boot correctly if /sys has not been updated ?). Thanx in advance for your (always appreciated) input.;) Pierre
  12. In France, we begin to have a significant number of schools (primary or colleges) using Linux solutions. Here, I'm currently installing a primary school with the "AbulEdu" linux based suite See http://www.abuledu.org. The "pro" (latest) version is debian based, while the community version is Mandrake (7 & 8) based. Config I'm working on: 18 thin clients (cyrix boxes, no disk, no cdrom, no floppy, no fan, 17'' flat screens) connected to a 'big' server (Pentium 2 Ghz, 1.5 Gb ram, 2x80 Gb HD + external disk for backup). Not a single Windows PC! The solution is based on top of LTSP (so you can use old-recycled PCs too). Pupils use the WinMaker light interface (but you can still choose the others). Admin (for teachers) is managed thru a nice and easy HTML interface (PHP). Contains tons of educational software (all levels, incuding Gcompris etc), web access and mail for everybody, Squid protection and firewall, intranet/internet server, USB support on thin clients, automatic updates, tech support and assistance, etc. May even accept Windows (domain) and Mac clients. Total cost (complete harware, network stuff, install, service): less than 15000 Euros. For 18 virus-proof and hassle-free stations, not too bad!
  13. Could be a hardware problem (heat or flaky ram). Check your BIOS settings for power saving, ACPI and "advanced features". Try to start with a "safe configuration", disabling overclocking and other special features. It might help. And when you find a "stable" configuration, then try to re-enable BIOS options one at a time.
  14. I've used these PM 8 DOS diskettes to repartition my old Compaq laptop, and it worked nicely. PM reduced the XP partition to 50% of the total disk size, and I used the free space to install MDK 10.0. And yes, PM does move data to shrink the partition. However, I remember another experience with PM 8 on a laptop running XP. First, it failed to reduce the XP partition, and the only reason it gave was something about "not able to move non movable files". So I rebooted XP, switched off virtual memory, and rebooted again to make sure pagefile.sys has been deleted (this non movable file usually sits at the end of the main XP partition). Then I booted with the PM 8 diskette and this time it did it. Then I booted XP again, switched on virtual memory and the pagefile.sys file was recreated at the end of the resized NTFS partition. I always keep these PM 8 diskettes. There are also very useful to convert NTFS to FAT32 (and back). But be careful when running PM 8 on a system with ext3 or jfs partitions, as it may suggest you to fix "a problem" found in Linux partition identification. Just reply "No". In other words, I never had a problem with PM 8 tempering with Windows partitions, but I would not use it to play around with Linux partitions. Linux has plenty of good tools to do it by itself! Anyway, EVERY update of the partition table should begin with a backup of your valuable data!
  15. Could you give more information about the "system crash", any message showing up on your screen ? Which version of Mandrake have you installed ? After the LILO menu, does it show a progress bar ? Have you tried to hit ESC to get full boot messages instead ? Write down any message you can get. It will help to find why you have this problem.
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