#!/bin/bash
MUSER="$1"
MPASS="$2"
MDB="$3"

mysql --user=$MUSER --password=$MPASS -BNe "show tables" $MDB | tr '\n' ',' | sed -e 's/,$//' | awk '{print "SET FOREIGN_KEY_CHECKS = 0;DROP TABLE IF EXISTS " $1 ";SET FOREIGN_KEY_CHECKS = 1;"}' | mysql --user=$MUSER --password=$MPASS $MDB

one problem they have has still not been fixed though: the client brings its own CA-Certificates… well… look at the list:

iso@iso-i7:~$ ls /opt/Citrix/ICAClient/keystore/cacerts/
BTCTRoot.crt  Class3PCA_G2_v2.crt  Class4PCA_G2_v2.crt    GTECTGlobalRoot.crt  Pcs3ss_v4.crt

this is just a bad joke – to fix it, just create a link to a reasonably filled list of CA-Certificates, e.g. from mozilla:
iso@iso-i7:/opt/Citrix/ICAClient$ cd /opt/Citrix/ICAClient/keystore/
iso@iso-i7:/opt/Citrix/ICAClient/keystore$ sudo mv cacerts cacerts_citrix
iso@iso-i7:/opt/Citrix/ICAClient/keystore$ sudo ln -s /usr/share/ca-certificates/mozilla cacerts
done, you may now connect to citrix servers which use secure gateway to encapsulate the ICA-traffic in HTTPS

http://pascal-schwarz.ch/gallery2/main.php?g2_itemId=7631

IMPORTANT NOTE: i can’t be held responsible for anything that this class does or does not, you’ve been warned :p

list of know issues:

• the methods floatUnderstandingFromLongValue() and floatUnderstandingFromDoubleValue() return WRONG FLOATS!
• maybe the method getMantissaBitsSignificanceString() is also not working correctly, especially with really small numbers (E=-126)
• code has gotten a little confusing
• things could probably be coded more efficiently

you can download the source from here:
http://pascal-schwarz.ch/stuff/FloatUnderstanding/FloatUnderstanding.java
http://pascal-schwarz.ch/stuff/FloatUnderstanding/TestRecalcMultiThread.java

if you have any feedback, please use the comment-functionality under this post.

Update (20.03.2011):

• better handling of denormalized values (getMantissaValue(), getMantissaSignificanceString(), getExponentValue(), …..)
• included a multithreaded recalcFloatValue-Tester
• the fabric-methods floatUnderstandingFromLongValue() and floatUnderstandingFromDoubleValue() ARE NOT FIXED yet

see here: http://dltj.org/article/ssh-as-socks-proxy/

• price with extending my contract another year at swisscom shop: about chf 750.-
• price with extending my contract another 2 years at mobilezone: about chf 730.-
• price WITHOUT CONTRACT at digitec: chf 690.-

strange eh?

• i’m living near olten (egerkingen)
• normally i work in aarau, so i have a subscription for egerkingen – aarau
• sometimes i have to visit clients around zurich

now you think: “easy, you’ll just have to buy a ticket from aarau to zurich”… but that isnt the case:
if the train stops in aarau (and its enough if it just stops, no need to change the train or something), you may buy a ticket aarau – zurich and won’t have any problem. but if the train goes directly from olten to zurich, without stop in aarau, you have to buy a ticket olten – zurich, or you’ll have to pay a monetary fine (CHF 80.-)…as if you would not have any ticket at all!

but…. what is the difference for sbb?

1. to allow the update, steps as described on this howtogeek post are needed.
2. the upgrade must be run from your running windows 7 rc installation, not from the cd or usb-stick
3. it will take around 30 minutes to complete

there were only a few problems after the upgrade;

• nvidia driver was still working, but no games had antialiasing nor anisotropic filtering – after upgrading the driver, this works fine again
• according to the upgrade compatibility check hamachi would have to be reinstalled, i just removed it
• tricky: daemon tools (sptd) has problems after the upgrade, however, this can be fixed like described on this blog

usually, when xrandr outputs the following:

(don’t ask me where dvi-0 comes from…)
one would think a simple xrandr --output VGA-0 --auto would activate the second monitor. however, this doesn’t change anything. instead, i have to use the following:

xrandr --output VGA-0 --auto --same-as LVDS
after closing the notebook lid, i get a picture on my monitor… but i may not turn off lvds or dvi-0, or the monitor (on vga) will turn off…

1. start the installer with a special option and killing all tries to compile the modules, as described in here: blog post by Sebastian Mogilowski
2. add the line export VMWARE_USE_SHIPPED_GTK=force to the file /etc/vmware/bootstrap, as described in this vmware thread (go to page 3)

i think it’s really time to change to virtualbox which is completely open, has better integration and works more reliable…

i’m backing up my citrix xenserver vm’s using the command

i write the backup directly to a cifs-mounted share on the network. however, i need to compress those images, ideally before i send them over the network. the problem is that the template-export command doesn’t support writing to stdout, which would allow me to pipe it through gzip.

fortunately, there’s a way which allows me to pipe it through gzip nevertheless. i’m using a fifo;
1st step: create a fifo

2nd: start gzip and let it wait for data from the fifo and write to another file (in my case on the cifs-share)

3rd: write your backup to the fifo, instead of the mounted volume

NHAAAA, just noticed that the template-export command doesn’t want to write to files that already exist… but the above works for other things as well ]]> http://pascal-schwarz.ch/blog/index.php/2009/08/28/compression-using-fifos/feed/ 3 http://pascal-schwarz.ch/blog/index.php/2009/08/15/problems-with-enigmail-after-updatereinstallation-of-ubuntu/ http://pascal-schwarz.ch/blog/index.php/2009/08/15/problems-with-enigmail-after-updatereinstallation-of-ubuntu/#comments Sat, 15 Aug 2009 08:11:21 +0000 iSO http://pascal-schwarz.ch/blog/?p=138 just had a little problem to fix;

when i opened an encrypted or signed message in thunderbird, the error “the enigmime service is not available” was shown. however, enigmail and thunderbird were installed and even setting the path to the gpg binary manually doesn’t fix the problem.

however, it’s not too difficult to fix;

this uninstalls enigmail, including global settings. it’s not enough however, you’ll have to open thunderbird and remove it using the extras – add-on’s dialogue. afterwards, you may reinstall enigmail and it works as always.

as I did this, and I want to help other admins, here is a link: Download HP Universal Print Driver 4.7.2 (PCL5, PCL6 and PS)

Note: I did not test the driver yet, but it was obtained from HP directly

Update: just changing the driver on the printserver did not help so far….

Update 2: seems like we could fix the problem by using the newly released specific driver for the hp color laserjet 5550 instead of the universal print driver