Ikke's Blog

Category: Networks

Aug 31
Virtual Reality in 2015

What will the Internet look like in 2015? What are giants like Microsoft and Google up to? Who are the other players?

Find the (possible) answer on these and other questions here (requires a Flash player, unfortunately).

Complete nonsense? A bit of truth? Maybe even worse than presented here? Let me know in the comments!

Thanks to Bram ;-)

May 17

I wrote a little Bash script this morning, which gives a quick overview of your system.
As mentioned in the help text, this can be very usefull for server administrators, eg allowing you to let an overview be sent to your mailbox every 24h using a cronjob.

This is a sample of the current output:

* System statistics for:        foo.baar.be
* Generated on:                 Tue May 17 15:00:49 CEST 2005
* Running as:                   root

=================== Uptime =====================================
* Uptime:                       4 days, 04:37:29
* High score:                   151 days, 19:15:18
* Load average:                 0.32 0.24 0.22

=================== Users ======================================
* Active users:                 2
* User information
        USER     TTY        LOGIN@   IDLE   JCPU   PCPU WHAT
        someone pts/0     12:15    2.00s  0.62s  0.05s sshd: ntrangez [priv]
        someone pts/1     13:30    5:19   1.17s  0.05s sshd: ntrangez [priv]

=================== Tasks ======================================
* Number of running tasks:      62
* Running programs:
agetty          events/0        kjournald       lockd           portmap         sh
aio/0           fcron           kseriod         mysqld          ps              sshd
apache2         init            ksoftirqd/0     mysqld_safe     rpc.mountd      su
bash            kblockd/0       kswapd0         nfsd            rpc.statd       syslog-ng
boa             khelper         kthread         pdflush         rpciod/0        uptimed

* CPU load:                     2%
* Process state:
        Running:                1
        Sleeping:               60
        Zombie:                 0
        Stopped:                0

=================== Networking ================================
* Routing table:
        Destination     Gateway         Genmask         Flags Metric Ref    Use Iface     wifi.vtk.ugent.   UG    0      0        0 eth0     *        U     0      0        0 eth0
        loopback        webvtk.vtk.ugen       UG    0      0        0 lo
        default         fire.vtk.ugent.         UG    0      0        0 eth0

=================== Hard Disc =================================
* Disk Information:
        Filesystem            Size  Used Avail Use% Mounted on
        /dev/hdc4             4.5G  3.2G  1.1G  75% /
        /dev/hdc5              14G   11G  2.4G  82% /var/www

* Mounts:
        /dev/hdc4 on / type ext3 (rw,noatime)
        none on /proc type proc (rw)
        none on /sys type sysfs (rw)
        none on /dev type ramfs (rw)
        none on /dev/pts type devpts (rw)
        /dev/hdc5 on /var/www type ext3 (rw,noexec,nosuid,nodev,noatime,acl)
        none on /dev/shm type tmpfs (rw)
        nfsd on /proc/fs/nfs type nfsd (rw)

=================== MD5Sum Check ==============================
* Checking MD5 Sums
        /etc/passwd:                            [OK]
        /etc/shadow:                            [OK]
        /etc/group:                             [OK]

* Brought to you by Ikke - http://www.eikke.com

A TODO is included in the script source.

I made the script available here (enscript version here). If you use it, please let me know something :-) Or even better, if you add more support, please send me a patch so everyone can make use of it :-)

It has no special dependencies, next to Bash and some standard utilities like wc, bc, tail, md5sum, awk and grep.
The "record uptime" is only displayed if you got uprecords (/usr/bin/uprecords) installed.
Make sure you check the md5sum part, can be very usefull :-)

May 2

Karel, why oh why did you this? People seem not to understand I'm not intending to run MSN7 as my default Messenger at all, just trying to solve some little annoyance? Do they actually read what I wrote?

Just tried amsn-cvs. It crashed when I tried to start a normal conversation with someone, then worked fine. I did not try videochat support yet though, none of my contacts owning a webcam came online untill now.

May 1
MSN7 under Linux

(thumbnail is link to full size screenshot)

I want MSN Video Chat (receipt) working. Under Linux. As soon as possible. So I tried getting MSN Messenger working under Wine.

As you can see, it works. But only a little. This is the bloated version 7 of the official client, and Wine seems to be unable to handle it properly. It's using non-standard windows (actually, it are clipped standard windows) etc. I did not try the webcam feature either.

Has anyone got an installer for MSN Messenger 6.x for Windows 98/Me? I'd like to try that one too, but only "beta" version 7 is available on the official website. A commercial software vendor only offering beta versions of it's software to the users... :roll:

Maybe I should just run a stripped Windows session under that great version 5 of VMWare Workstation as RubenV just suggested, and take the easy way ;-) Or try aMsn which should get videochat support soon (it's already in CVS I heard, Scapor?), but I hate that Tcl/Tk interface :-(

Apr 30

I just installed Kolab on my desktop machine, just to play around with it, and I must say I'm impressed. This is the most integrated groupware-like suite I've ever worked with.
Based on existing open source solutions like

  • Postfix
  • Cyrus Sasl
  • SpamAssassin
  • Amavis
  • Apache
  • Cyrus IMAP
  • Mysql
  • OpenLdap
  • Sieve
  • PHP

and others, you get a completely integrated mailserver, userbase, calendars,... with a nice webinterface for administration purposes.

I installed Horde as user frontend, which took some time, but now it's working almost well. Using Horde the user gets a well-integrated web interface to his email, calendars, address books, Sieve mail filters, notes and tasks etc.

This is definately something we should look into at VTK. When using Horde as user interface, we could even allow our users to access their Eduserv email from the same interface etc, which would be really nice. The implementation could easily be done in a multiple steps: first get all email stuff working, then addressbooks, then calendars,...
I wonder whether it could be possible to extend the "standard" Kolab "User" LDAP object so it can also be used for Samba3 LDAP authentication? If that'd be possible, this is definately the application to use on our new server :-)

Screenshots might follow later ;-)

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