Wednesday, 23 March 2011

Garbage in, Garbage out

Why you should not accept data from users into a DB without checking it.

Exhibit A: "select manufacturer"

<OPTION value="FUJITSO">FUJITSO</OPTION>

<OPTION value="FUJITSU">FUJITSU</OPTION>

<OPTION value="FUJITSU SIEMENS">FUJITSU SIEMENS</OPTION>

<OPTION value="FUJITSU-SIEMEN">FUJITSU-SIEMEN</OPTION>

<OPTION value="FUJITSU-SIEMENES">FUJITSU-SIEMENES</OPTION>

<OPTION value="FUJITSU-SIEMENS">FUJITSU-SIEMENS</OPTION>

Monday, 21 March 2011

The saga of SAGA

for anyone who wishes to install a glite-WN without the overhead of SAGA, the magic voodoo on the command line is

yum --enablerepo dag groupinstall glite-WN --exclude \*saga\*

Friday, 18 March 2011

Makefile Faffage

I've inherited a piece of legacy code (an inirscript that needed bringing up to FHS and Fedora packaging guidelines) -- as part of the testing I realised I needed a noddy way to generate the tar.gz sources. There was already a Makefile in the package (for ETICS) but I hacked in the following to quickly build up a NVR-tarfile.

Not pretty, but if anyone fancies some Makefile golf, I'm open to suggestions:


dist:
echo ${package}-`sed \
-e '/^Version:/!d' \
-e 's/[^0-9.]*\([0-9.]*\).*/\1/' \
-e q \
${package}.spec` > .fname
-rm -rf `cat .fname`
cp -lvr src/ `cat .fname`
tar chzf `cat .fname`.tar.gz `cat .fname`
-rm -rf `cat .fname` .fname


and yes, it bears a striking resemblance to the GNU Complex Makefile Example

Overlaying SLURM job timings on Grafana plots

As you may have noticed, I'm quite fond of Grafana and use it at home and work. One of the dashboards I have at work is the general sta...