Il blog di Gas

A friend of mine, Christian, has released PixieLive, a slax based live linux distro build with gentoo.
It’s one of the few live distributions that support Intel GMA500, popular on netbooks like some Asus EEEPC.

PixieLive

A proper transcode must have a lossless audio format as a source, a good one is flac ,stands for Free Lossless Audio Codec, because it does the job well and has a good licence ( BSD and GPL ).

If you have some flacs and want them in mp3 format (you need lame and flac) you can use this one liner:
for FILE in *.flac; do flac -cd "${FILE}" | lame - "${FILE/.flac/.mp3}"; done

the above line decodes every file that ends in .flac to the standard output (screen) and pipes it to lame that will encode it. “${FILE/.flac/.mp3}” will be the output file, in bash that means: take the variables “$FILE” (that is the original filename), remove “.flac” and substitute “.mp3″.

Nowadays I transcode quite often to 320 kbit/s constant bit rate (CBR)

• achieving the best quality for an mp3 and still being highly portable, some players don’t like variable bitrate of high quality ( like the V0 preset)
• doing something unefficient since mp3 is not a good codec for that quality but if your stereo reads just mp3 you don’t have any choices

I simply need to use lame with the proper switches , the above one liner becomes:
for FILE in *.flac; do flac -cd "${FILE}" | lame --cbr --preset insane - "${FILE/.flac/.mp3}"; done

To rip my compact discs and encode my music in flac I use a program for windows called Exact Audio Copy (EAC), my Wine build doesn’t like it for some reasons and Virtualbox has historical problems in handling cdroms correctly, the solution was VMWare. The native solution is RubyRipper

Today I found the usual chinese trying to get in my smtp to send his spam to the world and I realized that fail2ban wasn’t working because the regexp used to match the offender is wrong.

This is the log entry (/var/log/mail)
Aug 21 22:45:30 myserver postfix/smtpd[12071]: warning: unknown[xxx.xxx.xxx.xxx]: SASL LOGIN authentication failed: authentication failure

and this is the regex that work , just remove the part after “authentication failed” (/etc/fail2ban/filter.d/sasl.conf)

failregex = (?i): warning: [-._\w]+\[\]: SASL (?:LOGIN|PLAIN|(?:CRAM|DIGEST)-MD5) authentication failed

Test it:
fail2ban-regex /var/log/mail.log /etc/fail2ban/filter.d/sasl.conf

if you are on a slow server or on a big mail server use /var/log/mail.err instead

Update

emerge --ask -C `eix -C kde-base --only-names --installed`

nano /etc/make.conf

and delete kde from the USE flags, remove qt3support and qt4 also if you don’t need them anymore

emerge -uavtqND world"

Now you should have just a few kde packages in the list you got as an output of that command, it’s your choice to leave them or unmerge them manually, with unmerge -pv –depclean you can see what packages pulls in your atom.

Ogni qualvolta ci si collega ad internet viene assegnato un indirizzo ip pubblico al proprio computer/router, in Italia quasi tutte le connessioni adsl private hanno un ip dinamico che camba tutte le volte che ci si riconnette. Può tornare comodo conoscere questo ip per poter raggiungere il proprio computer dall’esterno ( lavoro, università ) e per evitare di doverselo scrivere su un “post it” tutte le volte che si accende il modem è possibile utilizzare un dns dinamico .

Razionale

1. iscriversi ad un servizio di dns dinamico, si potrà scegliere un dominio di terzo livello ( terzolivello.secondolivello.it) a cui associare l’indirizzo ip del computer.
2. iscriversi a dnsomatic che provvederà a fornire a tutti i servizi che si usano (come i servizi di dns dinamico ma anche altri come opendns) l’indirizzo ip del computer
3. usare un client che al cambio dell’indirizzo ip avvisa dnsomatic

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Info
00:00.0 Host bridge: Intel Corporation Mobile PM965/GM965/GL960 Memory Controller Hub (rev 03)
00:01.0 PCI bridge: Intel Corporation Mobile PM965/GM965/GL960 PCI Express Root Port (rev 03)
00:1a.0 USB Controller: Intel Corporation 82801H (ICH8 Family) USB UHCI Controller #4 (rev 03)
00:1a.1 USB Controller: Intel Corporation 82801H (ICH8 Family) USB UHCI Controller #5 (rev 03)
00:1a.7 USB Controller: Intel Corporation 82801H (ICH8 Family) USB2 EHCI Controller #2 (rev 03)
00:1b.0 Audio device: Intel Corporation 82801H (ICH8 Family) HD Audio Controller (rev 03)
00:1c.0 PCI bridge: Intel Corporation 82801H (ICH8 Family) PCI Express Port 1 (rev 03)
00:1c.1 PCI bridge: Intel Corporation 82801H (ICH8 Family) PCI Express Port 2 (rev 03)
00:1c.3 PCI bridge: Intel Corporation 82801H (ICH8 Family) PCI Express Port 4 (rev 03)
00:1d.0 USB Controller: Intel Corporation 82801H (ICH8 Family) USB UHCI Controller #1 (rev 03)
00:1d.1 USB Controller: Intel Corporation 82801H (ICH8 Family) USB UHCI Controller #2 (rev 03)
00:1d.2 USB Controller: Intel Corporation 82801H (ICH8 Family) USB UHCI Controller #3 (rev 03)
00:1d.7 USB Controller: Intel Corporation 82801H (ICH8 Family) USB2 EHCI Controller #1 (rev 03)
00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev f3)
00:1f.0 ISA bridge: Intel Corporation 82801HEM (ICH8M) LPC Interface Controller (rev 03)
00:1f.1 IDE interface: Intel Corporation 82801HBM/HEM (ICH8M/ICH8M-E) IDE Controller (rev 03)
00:1f.2 SATA controller: Intel Corporation 82801HBM/HEM (ICH8M/ICH8M-E) SATA AHCI Controller (rev 03)
00:1f.3 SMBus: Intel Corporation 82801H (ICH8 Family) SMBus Controller (rev 03)
01:00.0 VGA compatible controller: ATI Technologies Inc Mobilitiy Radeon HD 3400 Series
01:00.1 Audio device: ATI Technologies Inc RV620 Audio device [Radeon HD 34xx Series]
02:00.0 Network controller: Intel Corporation PRO/Wireless 3945ABG Network Connection (rev 02)
03:00.0 Ethernet controller: Marvell Technology Group Ltd. Unknown device 4355 (rev 12)
0a:01.0 FireWire (IEEE 1394): O2 Micro, Inc. Firewire (IEEE 1394) (rev 02)
0a:01.2 SD Host controller: O2 Micro, Inc. Integrated MMC/SD Controller (rev 02)
0a:01.3 Mass storage controller: O2 Micro, Inc. Integrated MS/xD Controller (rev 01)

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Nowadays it seems that superkaramba works well, in the past it was heavy and buggy and I used to have conky. There are no particular reasons that made me switch to superkaramba , other than moving from Gnome to Kde.

My superkaramba monitor is based on the dual cpu monitor by Loacoon, I changed it a little to show some useful stuff , some of them gentoo specific ( last sync, last emerges, currently emerging….. genlop is a dependency).

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I decided to keep ubuntu even if I don’t like this new release ( hardy ) at all. When it came out it used to hang for no reason , the new kernels seem to have solved the issue.

I had two big problems, I couldn’t hibernate/suspend and I couldn’t switch to the ttys with Alt+F1 for example.

Starting from the latter I realized that the nvidia-glx package instead of the nvidia-glx-new does the job. Since I don’t know the difference between the two packages and I really don’t care to have the newest nvidia driver I consider this problem fixed.

Now suspend works and not sometimes or just one time like it used in the past, I had to change some config options in /etc/default/acpi-support

SAVE_VBE_STATE=false
POST_VIDEO=false
SAVE_VIDEO_PCI_STATE=true

Hiberating is still a problem or better waking up from hibernation is a huge deal on my laptop. It does hibernate and it tries to wake up during next boot but when X starts everything freeze. It seems a kernel or xorg problem because I can’t turn on/off the capslock led. Here’s the bug I’ve filled, hopefully someoene will look at it.

Rapper: Spitty Cash
Titolo:Difficoltà nel ghetto