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Bode and Nyquist diagrams using GNU Octave

Using GNU Octave is easy to plot Bode and Nyquist diagrams, as follows: bode(zp([], [-1*i, i, -1], 1)) nyquist(zp([-0.5], [0.

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Bacula mail changer script (aka poor man's autoloader)

I enjoy Bacula for automated home backups on DLT and DDS tape drives. Being used at home there’s no – obviously – big-dollar-company-manager to ask for

Some applications using I²C
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Some applications using I²C

Parallel and serial ports are disappearing from today’s pc making life harder for the people who wants to connect their home-made devices to a

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Nagios nrpe and sudo: "NRPE: Unable to read output"

On CentOS 5 (and RedHat EL as well), you can encounter the following behaviour when configuring an nrpe plugin with sudo: [andrea@feyd ~]$ /usr/lib/

Tags: Linux, Nagios, Sudo, Unix
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Using samba with autofs on Fedora 9

Mount a samba share on the fly without having it mounted statically at boot via the /etc/fstab file can bring you the advantage of

Tags: Linux, Samba
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Bash delirium (delirio in bash)

f1() { :; }; f0() { f$((${#1}==0)) "${1:1}"; echo -n "${1:0:1}"; }; f0 'dlrow olleh'; echo

Tags: Delirium
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MusicBrainz not working with Amarok on Fedora 8

On my Fedora 8 system with Amarok I was trying to fill an mp3’s tag header using MusicBrainz, getting the following error: Tunepimp (MusicBrainz

Tags: Amarok, Linux
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SSH X11 forwarding issue

Recently I’ve been in an awkward situation with ssh and X11 forwarding, where ssh using the classic -Y or -X option wasn’t working

Tags: Linux, ssh, Unix, X11
Solaris 10 si3124 backport (workaround for bug #6566207)
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Solaris 10 si3124 backport (workaround for bug #6566207)

Do you think you can get a fast cheap SATA mass storage at home with Solaris 10 and ZFS just plugging a cheap si3124 controller?

Tags: sata, Solaris
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seq equivalent

On platforms without seq (MacOSX, Solaris), you can emulate it using dc as follows (note the upper bound and the lower bound): echo '[1+

Tags: Solaris, Unix