Re: [CentOS] A new blog on the block for Linux newbies
I've created a blog to help newbies in the world of Linux. Can you people see it and tell what departments that I've to improve more to help the grate community of Linux. 1) The world has plenty of sites already catering to linux newbies. I just googled linux for newbies and got 330,000 results. 2) Why can you possibly help if you yourself are a newbie? It's just the blind leading the blind. 3) Your difficulty in grasping simple concepts like how to write an email reaffirms point 2 in my mind. 4) Your grasp of the English language is at best mediocre. This will add another barrier to conveying information to newbies. my recommendation is that you forget your website and devote that time into learning linux better yourself. Spend time on various forums, and read read read. A final point I'll note is that this is a CentOS list, aimed at helping people with CentOS. It's not a place to spam with ads for your website unless they are CentOS specific. -- Spiro Harvey Knossos Networks Ltd 021-295-1923www.knossos.net.nz ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] rc.local
Ric Moore wrote: I note that there are two 'rc.local' files. One is in /etc and the other in /etc/rc.d Which has precedence and is the one to use? Thanks, Ric if you do an 'ls -lad /etc/rc.local', what do you get? Mine's a symlink to rc.d/rc.local. The rc.d directory is where the startup stuff should all be for the bootup scripts. I don't know why one would be in etc, but if you've got two separate files, the one in /etc is probably going to be ignored (at least I would hope so). -- Spiro Harvey Knossos Networks Ltd 021-295-1923www.knossos.net.nz ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] strange httpd error page using apache
Ric Moore wrote: I get this error page re-direct while opening a local webpage on my server, which carries me to yahoo for the error page filled with adverts. I'd really like to know how this one got here, as I just installed centOS a few weeks ago. http://h.found-not-help.com/search?qo=www.wayward4now.netrn=3D9F6PY8wdYwGYXrg= I'm really not suicidal enough to click on that link.. what does the A HREF tag on your page that you're clicking on say? -- Spiro Harvey Knossos Networks Ltd 021-295-1923www.knossos.net.nz ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Unable to install CentOS 5.2 on New HP Intel Core 2 Quad
They stop on kernel startup when trying to boot the CentOS 5.2 boot CD. It is during ACPI. Fedora 10 Live will not but up either. I am using Fedora 9 from Live and DVD Install to teach a fall class and it works fine. Are the CentOS and fed 10 DVDs of a similar type, and different to the DVD you used with fed 9? Or is your CentOS on CDs? A common problem I have is that some DVD drives really don't like some brands of disc. Some have issues with DVD-R's, some have issues with DVD+R's, some seem to be completely random. ymmv, but if the failing discs are the same brand, it's probably your cheapest quickest solution to reburn on a different brand and see if that helps. -- Spiro Harvey Knossos Networks Ltd 021-295-1923www.knossos.net.nz ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] yum provides on centos 5.2
Include the path:
Doesn't that defeat the purpose? My favourite use of the whatprovides
feature of yum is could find things that aren't on my system. I'd prefer
not to go on a wild path chase. :)
This looks like a bug to me.
On CentOS 5.1 (yum 3.0.5):
# yum provides uname | awk '/i386|noarch/ {print $1}'
uucp.i386
man-pages-de.noarch
man-pages-de.noarch
bash.i386
kdevelop.i386
kdevelop.i386
kdevelop.i386
man-pages-ja.noarch
man-pages-ja.noarch
man-pages-ko.noarch
man-pages-ko.noarch
coreutils.i386
coreutils.i386
python-tools.i386
man-pages-fr.noarch
man-pages-es.noarch
kdewebdev.i386
man-pages-ru.noarch
man-pages-cs.noarch
epic.i386
man-pages.noarch
man-pages.noarch
man-pages.noarch
man-pages-it.noarch
inn.i386
man-pages-pl.noarch
man-pages-pl.noarch
man-pages.noarch
bash.i386
coreutils.i386
on CentOS 5.2 (yum 3.2.8), No Matches found
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Re: [CentOS] yum provides on centos 5.2
Steve Tindall wrote: Looks like the new “feature� went a bit too far the other way. Roger that. From too much to not enough. We must bring balance back to the force. -- Spiro Harvey Knossos Networks Ltd 021-295-1923www.knossos.net.nz ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] nash on centos 5.2
ln -sf /sbin/nash sleep sleep 5 nash cannot open 5: no such file or directory Why doesnt that work? for the same reason that running nash 5 won't work. the first parameter of nash is expected to be a script name. if you want to feed sleep 5 into nash, you would give: sleep 5 | /sbin/nash man nash is your friend. -- Spiro Harvey Knossos Networks Ltd 021-295-1923www.knossos.net.nz ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Re: gcc editor for newbie (Emacs or vim or ?)
Edlin aarrgh my eyes... I don't know who to credit the quote to, but I think it's best described by: Windows. From the company that brought you edlin. -- Spiro Harvey Knossos Networks Ltd 021-295-1923www.knossos.net.nz ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] df to get total disk usage on all filesystems?
Sean Carolan wrote: Is there a flag for the df command to get the total disk space used on all filesystems as one number? I have a server with a lot of mounted shares. I'm looking for a simple way to measure rate of data growth across all shares as one total value. You've had a few replies as to the actual command(s) to use to achieve this, but what about looking at it from a different perspective? Is having one number useful for different data volumes? If one is a SQL database that remains static, and another is a shared disk used by the marketing department and its usage changes by gigs a week, then you're not really able to judge when a particular disk is going to need more capacity. One overall number has very limited use. Of course maybe that really is what you're after, in which case all this is redundant.. :) But another way to measure usage would be to feed the data daily (or weekly, or hourly, or whatever) into something like RRD Tool. Then it will come up with some pretty graphs of usage per disk. Then you can also calculate the total as well as another field, but I believe that separate data volumes warrant measuring separately. RRD Tool can be a bit complex to talk to directly, but if you use something like Cacti (http://www.cacti.net/), then I think you will get more value out of your data. I've never used Cacti myself, but it looks like a very nice package. And it makes talking to RRD Tool much easier. That and you can produce lots of pretty graphs for management that prove you need upgrades and more imortantly, *where*. :) -- Spiro Harvey Knossos Networks Ltd 021-295-1923www.knossos.net.nz ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Yum
You'd think that, however there seems to be a growing (or at least their users are complaining more vocally on irc) number of VPS providers using a very stripped down version of centos. They ship it without yum, which would imply that folks are not able to get basic security updates via the normal route (if at all). Perhaps it's the high cost of CentOS driving people into the competitions' arms. Maybe it's time we looked at dropping the cost, especially with the inevitable christmas rush. -- Spiro Harvey Knossos Networks Ltd 021-295-1923www.knossos.net.nz ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Ideas for stopping ssh brute force attacks
iptables -N SSHSCAN iptables -A INPUT -p tcp --dport 22 -m state --state NEW -j SSHSCAN iptables -A SSHSCAN -m recent --set --name SSH iptables -A SSHSCAN -m recent --update --seconds 300 --hitcount 3 --name SSH -j DROP hey, this is awesome. we're currently filtering log files looking for multiple failed connections, then adding them to iptables for a few minutes. this is much cleaner. :) thanks. -- Spiro Harvey Knossos Networks Ltd 021-295-1923www.knossos.net.nz ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Spamassassin as root and pyzor
Ideally I would like a link to a webpage entitled How I learnt to stop worrying and run spamass-milter as root. We've got a few boxen running spamd as non-privileged user, but spamassassin milter runs as root with no problems. On the flip-side to your query, I haven't found anything that states spamass milter shouldn't be run as root. Also, a related question: is it worth installing pyzor, or will spamassassin on its own be enough? I ask because pyzor doesn't seem to be in any of the main repositories. Don't know about Pyzor specifically, but we use Vipal's Razor with success. Our situation is that we're an ISP, so we like the extra checking to be as absolutely sure as possible that we're only rejecting real spam. of course a few spams still trickle through but we haven't had a single false positive. -- Spiro Harvey Knossos Networks Ltd 021-295-1923www.knossos.net.nz ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Understanding iptables
Could you post /etc/sysconfig/iptables? /etc/sysconfig/iptables doesn't necessarily reflect what is running right now, and you can't include the counters with it. I'm not interested in the counters I want to see how the rules are I think he's trying to tell you that any changes made since the *last* write to /etc/sysconfig/iptables won't be reflected in that file. Or rather, what if that file has been written to, but not read from? The fact remains that iptables -L is more useful because it is a live state. In fact, I've got a few machines where all my rules are only kept in running memory. They're all activated/reactivated/modified using scripts. No state is stored on disk. [snip] Chain RH-Firewall-1-INPUT (2 references) target prot opt source destination ACCEPT all -- anywhere anywhere [/snip] What are we accepting here? All packets? If this is the case then there is no need for the rest of the rules in this chain. depends on the INPUT rule that references this. but yes, once a packet has been filtered to get here, then it will be accepted. see? you can read this output. -- Spiro Harvey Knossos Networks Ltd 021-295-1923www.knossos.net.nz ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Understanding iptables
P.S.: Once again: although it's great that you are digging into the problem, using iptables, and learning a lot on the process, you should *REALLY* consider ditching rsh/rlogin and sticking to SSH. I would consider using rsh/rlogin instead of SSH today about the same as using gopher instead of the WWW these days (for those of you who still remember it). what are you talking about? I'm writing a Tor wrapper that funnels all my http requests thru gopher for extra security. It's called Gor. And I'm writing it in GW-BASIC! we don't need no steenkin new fangled tecnomologies. next you'll be telling me our internets shouldn't use tubes. -- Spiro Harvey Knossos Networks Ltd 021-295-1923www.knossos.net.nz ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] share folder as USB mass storage device
Maybe I'm just being silly here, but I'm wondering if anybody has ever used their computer for sharing files over USB. That is, the computer pretends to be a USB mass storage device. Surely, somebody must have thought of this before :-D Yes, Apple thought of it years ago. Plug a Mac/laptop to another Mac via Firewire (and I think USB too), boot it while holding down the T key (I'm pretty sure it's T), and it boots as a slave drive. This was a standard feature used when you upgraded hardware and wanted to migrate your data across. Not sure if it works on Intel Macs, but don't see why it wouldn't. However, this feature also relied on the BIOS. PCs don't have this. And if you just plugged two PCs together via USB, each end would be connected to a motherboard, or a PCI host card, not an actual device. I have never seen this done in PC land, and it would probably require hardware/BIOS changes before someone implemented this in Linux. -- Spiro Harvey Knossos Networks Ltd 021-295-1923www.knossos.net.nz ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Message size rejected
SMTP error: 552 5.3.4 Message size exceeds fixed limit Reporting-MTA: dns; borg2.lydgate.lan I presume that this is a configurable limit, but I'm not sure where to look. Since it says MTA I'm thinking that it's probably postfix. Can someone please tell me what parameter I'm looking for? Thanks postfix (main.cf): message_size_limit=numberOfBytes sendmail (sendmail.mc): define(`confMAX_MESSAGE_SIZE', `numberOfBytes') sendmail will need a 'make' to be run in the conf dir (probably /etc/mail) -- Spiro Harvey Knossos Networks Ltd 021-295-1923www.knossos.net.nz ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Re: CentOS 5.2 kernel [2.6.18-92.1.1.el5] crashes on dual-PIII Compaq ProLiant 3000
Not on this one! ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos Yes it does. :) That URL has a link to the archives. -- Spiro Harvey Knossos Networks Ltd 021-295-1923www.knossos.net.nz ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Can't run a bash script from USB drive
How can I control this (i.e., allow 'exec' on my USB drive(s))? either: mount /media/usb -o remount,exec or more preferable, add exec into the /etc/fstab entry for your usb drive (you might have to create one). It'll look something like: /media/usb /dev/sdb1 vfatexec,user0 0 /media/usb is the point you will mount to, and /dev/sdb1 is the actual usb device. vfat is the filesystem type, and may be something else if you've formatted the stick; but if it's an actual hard drive, it could be something like ntfs. man fstab has a list of all the filesystems. user will let non-root mount it. -- Spiro Harvey Knossos Networks Ltd 021-295-1923www.knossos.net.nz ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Re: To upgrade or not
5.1 is not a different distro than 5.2. If you update 5.1 it becomes 5.2. You don't go out and say update to 5.2, you just yum update, and it becomes 5.2. Think of it in Windows terms as Centos 5 sp1 (service pack 1) or Centos 5 sp2. If you want to stay with 5.1 you no longer get updates. are you speaking as an official representative of CentOS? -- Spiro Harvey Knossos Networks Ltd 021-295-1923www.knossos.net.nz ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Awk help
I have csvde dump from active directory I process on my postfix mta.
It takes output like this:
CN=Curtis xxx,OU=Domain Users,OU=xxx xxx,DC=xxx-xxx,DC=local,X400:c=US\;a=
\;p=xxx xxx xxx\;o=Exchange\;s=xxx\;g=xxx\;;SMTP:[EMAIL PROTECTED]
and should return a relay_recipient map in the form of:
[EMAIL PROTECTED] OK
Everything up to the awk is working, it drops the smtp: but its putting OK's
all over the darn place.
Anyone familiar enough with awk and printf that can suggest why this happens?
you can simplify that line down to:
awk 'BEGIN { FS=: } /(smtp|SMTP)/ { printf %-30sOK\n, $NF }' $1
the -30 will make sure that everything aligns, because with just a tab
to separate the email addresses, you'll end up with a wonky OK column.
-30 pads out the first column to 30 characters.
also, I recommend changing the /(smtp|SMTP)/ to just /SMTP/ because if a
program is producing output like this from AD or LDAP, then the SMTP
will always be caps. You risk matching other lines in the log file that
don't match this format.
basically, this script separates a line by colons ':' and prints the
last field if the line fed to it contains 'smtp' or 'SMTP'. The $NF is
Number of Fields, so effectively prints the last field.
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Re: [CentOS] Re: CentOS 5.2 is ***NOT*** here!
I'm running Centos-5.1 but am a complete Centos newbie. What is the best way of installing Centos-5.2 ? Is a fresh installation recommended, or can one do a yum upgrade? Or is there any other way of proceeding? wait for the announcement. all the info will be available at that time. -- Spiro Harvey Knossos Networks Ltd 021-295-1923www.knossos.net.nz ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Directory compare
I have 2 drive sets that are supposed to be identical [I use CentOS 5]: A: 1.6Tb B: 1.49Tb I need to find the differences, any suggestion? diff will do it. diff -q /dir-a/ /dir-b/ the -q will just tell you what files are different, not what's different inside the files. -- Spiro Harvey Knossos Networks Ltd 021-295-1923www.knossos.net.nz ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Directory compare
I would like to do the same among two, several boxes, that is take thier dir listing to a certain depth, and compare it for differences as an integrity check that they have the same installation files? then, maybe run a find to extract all filenames, then feed each one into sha1sum or md5sum to get a list of checksums. rinse and repeat on other server, then compare the two resulting sets of data. I can't think of a single tool to do this all rolled into one. -- Spiro Harvey Knossos Networks Ltd 021-295-1923www.knossos.net.nz ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
