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Debian

Journal Journal: Linode config

First of all, aptitude-upgrading, the debian image still has the random number gen. vulnerability. I went for lenny so i have a recent git and postgresql 8.3

Did tzsetup, and aptitude installed locales
added a normal user

Linode configures with DHCP his servers. Might have advantages but i prefer a static one

iface eth0old inet dhcp

iface eth0 inet static
        address (...)
        netmask 255.255.255.0
        gateway (...)
        dns-nameservers 207.192.69.4 207.192.69.5

and put a name in /etc/hostname

Then installed arno-iptables-firewall.
Opened ports 80 443 (it's gonna be a server)
FULL_ACCESS_HOSTS="(my machine domain name)"
FIREWALL_LOG=/var/log/firewall
LOGLEVEL=debug

then
touch /var/log/firewall

in /etc/syslog.conf kern.* must be changed to kern.!=debug
and the following added:
      # Logging for iptables
      kern.=debug -/var/log/firewall

then /etc/init.d/sysklogd restart

and restart arno firewall

To prevent firewall messages on lish console out add to /etc/init.d/klogd:

KLOGD="-c 4"

And restart that one too.

Better use logrotate too, see
http://linuxgazette.net/114/keeling.html

in /etc/logrotate/logrotate.d /var/log/firewall {
                      rotate 7
                      daily
                      compress
                      notifempty
                      create 0640 root adm
                      delaycompress
                      create
}

and start logrotate to see if it kinda works /usr/sbin/logrotate /etc/logrotate.conf

Rails server:
installed exim4-daemon-light postgresql lighttpd ruby ruby1.8-dev irb liberb-ruby libpgsql-ruby1.8 libredcloth-ruby1.8 rdoc1.8 libfcgi-ruby1.8 rubygems rake

then:
gem install rails
(wait)

make sure the correct version for your app is present, too
gem install -v=2.0.2 rails

Postgres users need postgres gem
aptitude install postgresql-server-dev-(version) make

gem install postgres

lighty-enable-module to add fastcgi and ssl
but then removed the entries in conf-enabled dir


# Debian lighttpd configuration file
#

############ Options you really have to take care of ####################

## modules to load
# mod_access, mod_accesslog and mod_alias are loaded by default
# all other module should only be loaded if neccesary
# - saves some time
# - saves memory

server.modules = (
        "mod_fastcgi",
                        "mod_access",
                        "mod_alias",
                        "mod_accesslog",
                        "mod_compress",
                      "mod_rewrite",
# "mod_redirect",
# "mod_evhost",
# "mod_usertrack",
# "mod_rrdtool",
# "mod_webdav",
                      "mod_expire",
# "mod_flv_streaming",
# "mod_evasive"
)

## a static document-root, for virtual-hosting take look at the
## server.virtual-* options
server.document-root = "/var/www/"

## where to upload files to, purged daily.
server.upload-dirs = ( "/var/cache/lighttpd/uploads" )

## where to send error-messages to
server.errorlog = "/var/log/lighttpd/error.log"

## files to check for if .../ is requested
index-file.names = ( "index.php", "index.html",
                                                              "index.htm", "default.htm",
                                                              "index.lighttpd.html" )

## Use the "Content-Type" extended attribute to obtain mime type if possible
# mimetype.use-xattr = "enable"

#### accesslog module
accesslog.filename = "/var/log/lighttpd/access.log"

## deny access the file-extensions
#
# ~ is for backupfiles from vi, emacs, joe, ...
# .inc is often used for code includes which should in general not be part
# of the document-root
url.access-deny = ( "~", ".inc" )

##
# which extensions should not be handle via static-file transfer
#
# .php, .pl, .fcgi are most often handled by mod_fastcgi or mod_cgi
static-file.exclude-extensions = ( ".php", ".pl", ".fcgi" )

######### Options that are good to be but not neccesary to be changed #######

## Use ipv6 only if available.
#include_shell "/usr/share/lighttpd/use-ipv6.pl"

## bind to port (default: 80)
# server.port = 81

## bind to localhost only (default: all interfaces)
server.bind = "(server's IP)"

## error-handler for status 404
#server.error-handler-404 = "/error-handler.html"
#server.error-handler-404 = "/error-handler.php"

## to help the rc.scripts
server.pid-file = "/var/run/lighttpd.pid"

##
## Format: .html
## -> ..../status-404.html for 'File not found'
#server.errorfile-prefix = "/var/www/"

## virtual directory listings
dir-listing.encoding = "utf-8"
server.dir-listing = "disable"

## send unhandled HTTP-header headers to error-log
#debug.dump-unknown-headers = "enable"

### only root can use these options
#
# chroot() to directory (default: no chroot() )
#server.chroot = "/"

## change uid to (default: don't care)
server.username = "www-data"

## change uid to (default: don't care)
server.groupname = "www-data"

#### compress module
compress.cache-dir = "/var/cache/lighttpd/compress/"
compress.filetype = ("text/plain", "text/html", "application/x-javascript", "text/css")

#### url handling modules (rewrite, redirect, access)
# url.rewrite = ( "^/$" => "/server-status" )
# url.redirect = ( "^/wishlist/(.+)" => "http://www.123.org/$1" )

#
# define a pattern for the host url finding
# %% => % sign
# %0 => domain name + tld
# %1 => tld
# %2 => domain name without tld
# %3 => subdomain 1 name
# %4 => subdomain 2 name
#
# evhost.path-pattern = "/home/storage/dev/www/%3/htdocs/"

#### expire module
# expire.url = ( "/buggy/" => "access 2 hours", "/asdhas/" => "access plus 1 seconds 2 minutes")

#### rrdtool
# rrdtool.binary = "/usr/bin/rrdtool"
# rrdtool.db-name = "/var/www/lighttpd.rrd"

#### variable usage:
## variable name without "." is auto prefixed by "var." and becomes "var.bar"
#bar = 1
#var.mystring = "foo"

## integer add
#bar += 1
## string concat, with integer cast as string, result: "www.foo1.com"
#server.name = "www." + mystring + var.bar + ".com"
## array merge
#index-file.names = (foo + ".php") + index-file.names
#index-file.names += (foo + ".php")

#### external configuration files
## mimetype mapping
include_shell "/usr/share/lighttpd/create-mime.assign.pl"

## load enabled configuration files,
## read /etc/lighttpd/conf-available/README first
include_shell "/usr/share/lighttpd/include-conf-enabled.pl"

#### handle Debian Policy Manual, Section 11.5. urls
## by default allow them only from localhost
## (This must come last due to #445459)
## Note: =~ "127.0.0.1" works with ipv6 enabled, whereas == "127.0.0.1" doesn't
$HTTP["remoteip"] =~ "127.0.0.1" {
        alias.url += (
                "/doc/" => "/usr/share/doc/",
                "/images/" => "/usr/share/images/"
        )
        $HTTP["url"] =~ "^/doc/|^/images/" {
                dir-listing.activate = "enable"
        }
}

# lighttpd.conf entry to transparently add ssl
#$SERVER["socket"] == "(your server's IP):443" {
# ssl.pemfile = "/var/www/ ... /key-cert.pem"
# ssl.ca-file = "/var/www/ ... /cacert.pem"
# ssl.engine = "enable"
#}

$HTTP["host"] =~ "(^|\.)hostname$" {

server.error-handler-404 = "/dispatch.fcgi"
server.document-root = "/var/www/ railsapp /public/"

server.errorlog = "/var/www//log/lighttpd.error.log"
accesslog.filename = "/var/www/ railsapp /log/lighttpd.access.log"

url.rewrite = ( "^/$" => "index.html", "^([^.]+)$" => "$1.html" )

compress.filetype = ( "text/plain", "text/html", "text/css", "text/javascript" )
compress.cache-dir = "/var/www/ railsapp /tmp/cache"
expire.url = ( "/favicon.ico" => "access 3 days",
                                                          "/images/" => "access 3 days",
                                                          "/stylesheets/" => "access 3 days",
                                                          "/javascripts/" => "access 3 days" )

fastcgi.server = ( ".fcgi" => ( "localhost" => (
    "min-procs" => 1,
    "max-procs" => 1,
    "socket" => "/var/www/ railsapp /tmp/sockets/fcgi.socket",
    "bin-path" => "/var/www/ railsapp /public/dispatch.fcgi",
    "bin-environment" => ( "RAILS_ENV" => "production" )
) ) )

}

Postgresql
# su - postgres
now, a user same name of your linux user who own the app
$ createuser (username) -P (give him no special privileges)
$ createdb -E UTF8 (dbname)

edit pg_hba.conf (somewhere in /etc/postgresql/...)
# Put your actual configuration here
# ----------------------------------
#
# If you want to allow non-local connections, you need to add more
# "host" records. In that case you will also need to make PostgreSQL listen
# on a non-local interface via the listen_addresses configuration parameter,
# or via the -i or -h command line switches.
#
host (dbname) (www-data = username) 127.0.0.1 255.255.255.255 trust

Tried copying the rails app(s) to /var/www and work under user www-data

to make changes effective restart postgresql and lighttpd

Debian

Journal Journal: quick and dirty postgresql update- tutorial

Note, this procedure involves some downtime for the server.
First dump existing databases, e.g.

# su - postgres -c 'pg_dump -C my_database > /tmp/my_database.sql'

If you have user putting content into database this step could be done later, just before importing the sql in the new cluster. Remember to take down db clients if you care for db consistency.

Then install new version, e.g.

# aptitude install postgresql-8.3

when one installs a new version of postgres under debian, the old version stays installed and a new cluster is automatically created. The new version server is configured for an alternative port (5433). Watch for the messages/logs from the package manager.

Then import old users into the new cluster, take into account the listening port run the updated client as the bash command "psql" defaults to the old version.

# su - postgres
# createuser a_user --port 5433

Then copy or update the pg_hba.conf settings to the one in the new cluster in /etc/postgresql/8.3/main/pg_hba.conf

Do not forget to reload the settings.
# /etc/init.d/postgresql-8.3 reload

Then import the databases
# su - postgres
$ /usr/lib/postgresql/8.3/bin/psql --port 5433

Then configure the new server for the existing server port, e.g.
# /etc/init.d/postgresql-8.3 stop
edit /etc/postgresql/8.3/main/postgresql.conf:
    port=5432

Then stop the db clients (eg. it's downtime for my dynamic sites hosted with lighttpd), take down old db, take up new one, restart db clients /etc/init.d/lighttpd stop /etc/init.d/postgresql-8.2 stop /etc/init.d/postgresql-8.3 start
    netstat -nat /etc/init.d/lighttpd start

test the db clients (restart your browser for webapps to avoid using stale session data), if all is well we must remove old postgresql else at reboot it is restarted, conflicting with the newest server version.

Since the debian remove scripts assume the server is up we must take the old server back up- we need to configure the old server for an alternative port so both versions can be up at the same time, e.g.

edit /etc/postgresql/8.3/main/postgresql.conf:
    port=5434

# /etc/init.d/postgresql-8.2 start
# aptitude purge postgresql-8.2

This is all.
Note. It is better to upgrade incrementally than doing it say, from 8.1 to 8.3
There might be ways to reduce downtime, with WAL for example.

User Journal

Journal Journal: Rails: typo (todo)

apt-get install sqlite3 libsqlite3-dev
gem install sqlite3-ruby
of course all ruby dev and rails stuff must be already installed

gem install typo /to be continued
    517 mkdir blog
    518 cd blog/
    519 typo config .
    520 typo config . database=postgresql
    521 ls
    522 ls -a
    523 typo install --help
    524 rm ./* -rf
    525 typo install .
    526 typo stop .
    527 cat installer/lighttpd.conf.example
    528 typo config . database=postgresql
    529 typo config . web-server=external
    530 nano config/database.yml
    531 echo edit pg_hba.conf
    532 echo createdb typo -E UTF8
    533 rake db:migrate
    534 nano config/database.yml
    535 cp ../GaraTiro/config/database.yml config/database.yml
    536 nano config/database.yml
    537 rake db:migrate
    538 echo edit lighttpd.conf
    539 echo "$HTTP["host"] =~ "typo.jasonhoffman.org" {
server.document-root = "/home/jah/apps/typo/trunk/public/"
server.error-handler-404 = "/dispatch.fcgi"
server.indexfiles = ( "dispatch.fcgi")
server.errorlog = "/home/jah/logs/error.typo.log"
    fastcgi.server = ( ".fcgi" =>
          ( "localhost" =>
              ( "socket" => "/home/jah/tmp/typo-jah.socket",
                                                        "min-procs" => 2,
                                                        "max-procs" => 2,
                  "bin-path" => "/home/jah/apps/typo/trunk/public/dispatch.fcgi",
                  "bin-environment" => ( "RAILS_ENV" => "production" )
    )))
}
"
    540 ls
    541 ls log/
    542 touch log/lighttpd.error.log
    543 typo config . port=80
    544 typo config . rails-environment=development
    545 typo config .
    546 chown marcello:www-data .
    547 #change lighttpd user as same as app

Debian

Journal Journal: Compiz fusion (gnome) for intel X3100

As root:

edit /etc/X11/xorg.conf

If no extensions section add one, see below. Add the option anyway.

Section "Extensions"
                Option "Composite" "Enable"
EndSection

and in Section Devices add

        Option "XAANoOffscreenPixmaps" "true"

add to /etc/apt/sources.list
#compiz
deb http://download.tuxfamily.org/osrdebian unstable compiz-fusion-git

download the pgp key
wget http://download.tuxfamily.org/osrdebian/61B8DB62.gpg -O- | apt-key add -

install:

apt-get remove --purge compiz*
aptitude dist-upgrade
apt-get install -t unstable compiz-core compiz-gnome compizconfig-settings-manager compiz-fusion-plugins*

maybe it is needed the following too:
aptitude install 915resolution

As the logged in user, with the graphical desktop already running:
SKIP_CHECKS=yes compiz --replace

One can also install emerald and emerald-themes, possibly purging and reinstalling at every update.

Debian

Journal Journal: Packet writing

Verify you have the modules (recent 2.6 kernel needed stock lenny works)
modprobe -v udf
modprobe -v pktcdvd

aptitude install udftools
put your cdrom device in /etc/default/udftools
e.g. dev/hdX /etc/init.d/udftools restart

cdrwtool -d /dev/hda -q for a cdrw
dvd+rw-format /dev/hdd
and mkudffs /dev/hdd for dvd+rw

mount -t udf -o noauto,noatime,sync,rw,users /dev/pktcdvd/0 /mnt/

Now root is able to write on device, adjust permissions.

Debian

Journal Journal: Debian netboot

A spare laptop with no working cdrom and seemingly unable to boot from usb... but with a realtek boot agent. So it's netboot time. Another option is using wuby and install ubuntu right on the ntfs partition along with windows, but then you're back to square one if something happens to the windows installation.

On a debian box used as server:
aptitude install tftpd-hpa dhcp3-server
if you have another dhcp server installed skip dhcp3-server but you have to find the proper config yourself.

edit /etc/default/tftpd-hpa

RUN_DAEMON="yes"
OPTIONS="-l -s /var/lib/tftpboot"

from your fave debian mirror in dists/etch/main/installer-i386/current/images/netboot/

downloaded netboot.tar.gz, expanded it in /var/lib/tftpboot

For /etc/dhcp3/dhcpd.conf let's assume the tftpd box is in 192.168.0.1, I have to specify "filename" and "next-server" options- all other options depend on your subnet:

subnet 192.168.0.0 netmask 255.255.255.0 {
    range 192.168.0.5 192.168.0.15;
        filename "pxelinux.0";
        next-server 192.168.0.1;
    option subnet-mask 255.255.255.0;
    option routers 192.168.0.1;
    option broadcast-address 192.168.0.255;
    option domain-name-servers [ put here DNS addresses, space separated];
}

Then restart the services to make changes effective /etc/init.d/tftpd-hpa restart /etc/init.d/dhcp3-server restart

Make sure machines on the subnet can freely access the net to download packages, else the installation won't be very straightforward.

On the box that needs the reinstall chose net boot (usually selectable in the bios and or among boot options menu).

If all goes well the debian boot installer prompt should appear. Only after installation is complete you can stop tftpd server.

BTW on the laptop HAL had to ignore the broken device: put this in /etc/hal/fdi/preprobe , as this blog entry says

<?xml version="1.0" encoding="UTF-8">
<deviceinfo version="0.2">
<device>
<match key="block.device" string="/dev/[DEVICE]">
<merge key="info.ignore" type="bool">true</merge>
</match>
</device>
</deviceinfo>

Debian

Journal Journal: Wireless setup with wpa supplicant - incomplete

I already had the setup for 802.11b with my home lan

Note this setup is quite sub-optimal as the password is saved in plaintext
The wext driver is for recent 2.6 kernels, works for my ndiswrapper

add to /etc/network/interfaces:

iface wlan0 inet dhcp
                wpa-driver wext
                wpa-ssid "ZyXEL XXXYYY"
                wpa-psk [password plaintext]
# wpa-bssid 00:1a:2b:3c:4d:5e -> not necessary but likely safer
                wpa-key-mgmt WPA-PSK
                wpa-pairwise TKIP CCMP
                wpa-group TKIP CCMP
                wpa-proto WPA RSN

Debian

Journal Journal: Quick and dirty subversion to git repository migration

while git-svnimport can be used for proper subversion repositories, I had issues with it and a personal svn repository which didn't follow the traditional svn layout with trunk branches tags (shame on me). Well why not simply iterate over the revisions and importing them? Seems to work. Here's how I did it:

first run
svn info [URL of the svn repository you want to migrate]
to discover how many revisions it has till now.

then let's get the commit messages so we can recycle them:

for i in `seq 1 [number of revisions]`; do svn log -r $i [URL of svn repository] > /tmp/svnlog$i.txt; done

then:
svn co --revision 1 [path to the svn repository you want to migrate]
so that a dir with a working copy is created, we'll call it [target git repository]. Now let's migrate all changes:


cd [target git repository]/
git-init
echo *.svn >> .git/info/exclude
for i in `seq 1 [number of revisions]`; do cd .. ; svn co --revision=$i [URL of source svn repository] ; cd $OLDPWD ; git add . ; git-commit -a -F /tmp/svnlog$i.txt; done

That should do it. Better do a
git-gc --prune --aggressive
(Do it when nobody else is accessing the new git repository!!!) so that you save space on disk, and a
git clean -d
to get rid of now useless .svn dirs.

User Journal

Journal Journal: stv680 cam and mplayer

The cam (an old trust spycam 300) worked under ekiga or gqcam without problems, once the proper stv680 kernel module is installed.

for mplayer one must use the v4l driver specifying outfmt width and height, like this example

mplayer tv:// -tv driver=v4l:device=/dev/video1:outfmt=bgr24:width=320:height=240

Well the pic is upside down, can use -flip option or dunno turn the webcam upside down :)

"webcam" package is quite useful as a poor man cctv. here's a sample config

[ftp]
host = localhost
user = nobody
pass = xxxxxx
dir = /tmp
file = webcam.jpg
tmp = imageup.jpg
local = 1

[grab]
device = /dev/video1
width = 320
height = 240
delay = 1
wait= 1
norm = pal
quality = 75
trigger = 0

For complex stuff zoneminder.com ought to be the choice.

Debian

Journal Journal: [ITA] Empire Pen Dual TV - su Debian Etch

Nota: lascio libero chiunque di copiare modificare e riutilizzare il seguente articolo, che rilascio nel pubblico dominio. E' probabile che sul sito del produttore (www.empiremedia.it) si trovino ulteriori informazioni.

La usb pen mi funziona subito come analogico, dopo un po' funziona anche la parte digitale. Presumo sia una questione di caricare il firmware piu' adatto (v. sotto) o di aspettare che il driver maturi.

Per avere a disposizione la usb pen sotto linux bisogna compilarsi i moduli relativi. Quello disponibile con il kernel di etch non la riconosce.

Ho seguito le istruzioni in inglese su
http://www.marcushellberg.com/pages/projects/digital-tv-in-linux.php

Se non lo si sa, scoprire con
    uname -r
quale versione del kernel si sta usando, nel mio caso
    2.6.18-4-686

Usare questa informazione per scaricare la versione giusta degli headers:
    aptitude install mercurial linux-headers-2.6.18-4-686 build-essential

Fare copia di sicurezza dei moduli attualmente installati, casomai qualcosa andasse storto

    tar zcvf modulesbackup.tgz -C /lib/modules/ 2.6.18-4-686/

Scaricarsi e installare i moduli aggiornati usando mercurial

    mkdir dvbdriver
    cd dvbdriver/
    hg clone http://mcentral.de/hg/~mrec/v4l-dvb-kernel
    cd v4l-dvb-kernel/v4l/
    make
    sudo make install

Scaricarsi il firmware dal sito http://konstantin.filtschew.de/v4l-firmware/ (non va aggiornato il firmware della penna, va solo scaricato, viene usato dal modulo), a me va anche la versione 4, teoricamente andrebbe la versione 3.

una volta scaricato, scompattarlo in /lib/firmware, es:

    tar xvzf firmware_v4.tgz -C /lib/firmware/

a questo punto riavviare il PC inserendo la usb pen: i messaggi, ottenibili anche col comando dmsg, dovrebbero annunciare che la penna e' riconosciuta ed i moduli relativi caricati, ad esempio:

(...)
em28xx v4l2 driver version 0.0.1 loaded
em28xx new video device (eb1a:e310): interface 0, class 255
em28xx: device is attached to a USB 2.0 bus
em28xx: you're using the experimental/unstable tree from mcentral.de
em28xx: there's also a stable tree available but which is limited to
em28xx: linux =2.6.19.2
em28xx: it's fine to use this driver but keep in mind that it will move
em28xx: to http://mcentral.de/hg/~mrec/v4l-dvb-kernel as soon as it's
em28xx: proved to be stable
em28xx #0: Alternate settings: 8
(...)
EEPROM ID= 0x9567eb1a
Vendor/Product ID= eb1a:e310
AC97 audio (5 sample rates)
500mA max power
Table at 0x04, strings=0x226a, 0x0000, 0x0000
tuner 0-0061: chip found @ 0xc2 (em28xx #0)
attach inform (default): detected I2C address c2 /root/dvbdriver/v4l-dvb-kernel/v4l/tuner-core.c: setting tuner callback
tuner 0x61: Configuration acknowledged /root/dvbdriver/v4l-dvb-kernel/v4l/tuner-core.c: setting tuner callback /root/dvbdriver/v4l-dvb-kernel/v4l/xc3028-tuner.c: attach request! /root/dvbdriver/v4l-dvb-kernel/v4l/tuner-core.c: xc3028 tuner successfully loaded
attach_inform: tvp5150 detected.
cs: IO port probe 0x100-0x3af: clean.
cs: IO port probe 0x3e0-0x4ff: clean.
cs: IO port probe 0x820-0x8ff: clean.
cs: IO port probe 0xc00-0xcf7: clean.
cs: IO port probe 0xa00-0xaff: clean.
tvp5150 0-005c: tvp5150am1 detected.
Loading base firmware: xc3028_init0.i2c.fw
Loading default analogue TV settings: xc3028_BG_PAL_A2_A.i2c.fw
xc3028-tuner.c: firmware 2.7
ANALOG TV REQUEST
em28xx #0: V4L2 VBI device registered as /dev/vbi0
em28xx #0: V4L2 device registered as /dev/video0
em28xx #0: Found MSI DigiVox A/D
em28xx audio device (eb1a:e310): interface 1, class 1
em28xx audio device (eb1a:e310): interface 2, class 1
usbcore: registered new driver em28xx
usbcore: registered new driver snd-usb-audio
em2880-dvb.c: DVB Init
Loading base firmware: xc3028_8MHz_init0.i2c.fw
Loading default dtv settings: xc3028_DTV8_2633.i2c.fw
xc3028-tuner.c: firmware 2.7
Sending extra call for Digital TV! /root/dvbdriver/v4l-dvb-kernel/v4l/xc3028-tuner.c: attach request!
DVB: registering new adapter (em2880 DVB-T)
DVB: registering frontend 0 (Zarlink ZL10353 DVB-T)...
Em28xx: Initialized (Em2880 DVB Extension) extension
(...)

Per vedere se c'e' l'audio della TV:

arecord -l

  (...)
  card 1: Device [USB 2881 Device], device 0: USB Audio [USB Audio]
      Subdevices: 1/1
      Subdevice #0: subdevice #0

Si può regolare il volume con:

  alsamixer -c 1

premendo tab per scegliere l' input screen

A questo punto la scheda e' pronta, usando ad esempio mplayer, dopo aver verificato che mplayer funzioni con un file video (scelta del -vo adatto, verifica dei permessi per sentire l'audio ecc), per vedere la tv si usa

mplayer -vo xv tv:// -tv chanlist=italy:driver=v4l2:input=0:norm=2:device=/dev/video0:alsa=yes:audiorate=48000:amode=0:forceaudio=yes:adevice=hw.1,0:volume=80:immediatemode=0

(attenzione, inserire tutto su una riga e da chanlist= in poi senza spazi, in caso di dubbi vedersi l'help di mplayer- c'e' anche in italiano)

e usare h e k per provare tutti i canali fino a trovare qualche emittente.

Dopo qualche minuto di ricezione segnale analogico che a quanto pare sblocca la situazione, si puo' provare con il digitale. Consiglio di installare kaffeine, che ha una funzione di scansione canali. L'antennina in dotazione non ha fatto molto per me, collegando all'impianto antenna di casa (n.b. mai adattato al digitale terrestre) invece spuntano i canali, se la zona è servita.

Kaffeine permette di fare pausa del segnale video, registrarlo in mpeg2 (serve spazio su disco), e a quanto mi pare registrare un canale e vederne un'altro purche' appartenga allo stesso "stream".

Una stranezza, appena avviato kaffeine il segnale e' piu' debole, cambiando canale un po' la ricezione migliora. Ritengo sia qualche problema con i comandi dati al sintonizzatore.

Per la tv analogica riesco con mplayer a registrare in divx a 2000kbit e qualche filtro per incrementare la qualita' con un celeron a 1.7 giga. Registrando in mpeg2 o salvando direttamente lo stream (mai provato) si ha minor consumo di cpu e lievemente maggior qualità a scapito della dimensione del file.

Debian

Journal Journal: Processing.org installation on debian etch x86

first i checked that update alternatives (same as the checks performed with ibm-sdk for ppc installation script in the java journal entry) point to sun-java5-* related stuff.

then i downloaded and untarred processing.tgz

then i "aptitude installed" libstdc++5 and jikes (but the default jikes is supplied with processing.org, check it works with ./jikes -v in its directory)

then started the environment with ./processing

User Journal

Journal Journal: Vsftpd

Occasionally I need ftp to transfer big files without the hassle.

I chose vsftp because it seems easy to configure

in /etc/vsftp.conf i made sure the listen and listen_ipv6 are NO so it doesn't get started at boot, and made a copy of vsftp.conf and changed/added these options

listen=YES
anonymous_enable=NO
local_enable=YES
write_enable=YES
dirmessage_enable=YES
xferlog_enable=YES
connect_from_port_20=YES
secure_chroot_dir=/var/run/vsftpd
pam_service_name=vsftpd
rsa_cert_file=/etc/ssl/certs/vsftpd.pem
listen_port=(non standard port)
userlist_enable=YES
userlist_deny=NO

created a couple users for ftp only gotta prevent login

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