from me for you world

How to kill processes (application) in console mode

sugi — Thu, 02 Sep 2010 06:37:31 +0000

Actually this is my (late) response for my friend yalmove. Sorry friend.
To find out what process running in the memory/ computer through console mode is using ps x command.
Let say you use ubuntu, type this command in your console
#sudo ps x

Then you will see lots of processes running. The number in the left side is an unique number for an application. That number that we will use to shut off the application when it hang.

This is how to shut off the application in console, let’s say you have open office writer running , the ps x command will result something like this
4223 ? R+ 1:00 /opt/openoffice.org3/program/swriter

Kill it by typing this command
#sudo kill 4223

Then the application will close.

squid cache_dir performance

sugi — Thu, 02 Sep 2010 06:27:41 +0000

I m using squid in my ubuntu 9.10 server edition. I always try to look for the best configuration for my network. My server spec is Pentium III with 128 MB and 10 GB harddisk.

This is the part of the squid configuration in /etc/squid/squid.conf I use.

cache_mem 50 MB
cache_swap_low 60
cache_swap_high 70
cache_dir ufs /mnt/sda6/ 2960 10 256
access_log /var/log/squid/access.log squid

I divided the harddisk into 6 and 4 GB partition. The 4GB is special for the squid disk cache.
I always change the cache_mem and cache_dir size for maximum performance of my network.
Because I only have 128 MB in memory, I put 50 MB only for my squid and the rest for my server system.
Then limit the cache swap in 60 to 70%.
Finally the cache_dir, I use 2960 mean 2,9 GB of 3,7 GB (it should 4GB) or about 80% of the disk space I use for squid. I use 80% from the squid manual setting.
Then using this formula from a friend ((( x / y ) / 256 ) / 256 ) * 2 = L1
x is the size of the partition, in KB unit.
y is the size of object that 13KB average
L1 is the option in cache_dir means how many directory exist in the partition
L2 is the option in cache_dir means how many folder inside the L1 folder. Usually 256
So my calculation is this ((( 2960000 KB / 13 KB) / 256 ) / 256 ) * 2 = 6.9

Then the cache dir will be

cache_dir 2960 7 256

I still watch the performance of this setting. I don’t know is it still the best setting for the growing network in my office or not. But we’ll see about that.

Evolution-alarm-notify crash ubuntu 9

sugi — Fri, 27 Aug 2010 03:52:04 +0000

I got this message on one pc today.

“Failed to contact configuration server; some possible causes are that you need to enable TCP/IP networking for ORBit, or you have stale NFS locks due to a system crash. See http://projects.gnome.org/gconf/ for information”

According to a discussion in bugs.launchpad.net I will try a suggestion posted by a friend right there.

mv ~/.gconfd/saved_state saved_state.old”

Restart the computer and it works.

Canon LBP-3050 laser printer in Slackware 13

sugi — Wed, 18 Aug 2010 02:37:55 +0000

Try to install CAPT_Printer_Driver_for_Linux_V190_uk_EN.tar.gz that I downloaded from support-ph.canon-asia.com. You can download it here too.
Because there are only rpm files inside the Driver folder, we can change the rpm to tgz.
#su
#rpm2tgz *.rpm
Install them.
#installpkg *.tgz

Then edit /etc/ccpd.conf
#nano /etc/ccpd.conf
add this line

DevicePath /dev/usb/lp0

make file /var/ccpd/fifo0
#mkdir -p /var/ccpd/
#mkfifo /var/ccpd/fifo0
#chmod 777 /var/ccpd/fifo0
#chown root /var/ccpd/fifo0
#chmod -R a+rx /usr/share/cups/model

Restart cups
#/etc/rc.d/rc.cups restart

Type this command to add a printer to /var/ccpd/fifo0
#/usr/sbin/lpadmin -p LBP3050 -m CNCUPSLBP3050CAPTK.ppd -v ccp:/var/ccpd/fifo0 -E

Arrange the output of ccpd to /dev/usb/lp0
#/usr/sbin/ccpdadmin -p LBP3050 -o /dev/usb/lp0

Copy ccpd command to rc.d so it will restart everytime the computer boot
#cp /usr/sbin/ccpd /etc/rc.d/rc.ccpd

Restart ccpd
#/etc/rc.d/rc.ccpd restart

Check to your browser with http://localhost:631
There should be your LBP3050 right there. Print test page. Mine is work.

Slackware 13.1 already?

sugi — Mon, 16 Aug 2010 11:37:27 +0000

wow I missed this news. I don’t know if slackware now has gone through 13.1 version. Here is the news :
===
That’s right, another stable release of Slackware is finally ready to go. Slackware 13.1 is available in both 32-bit x86 and 64-bit x86_64 editions, and brings with it many major improvements, like KDE SC version 4.4.3, the 2.6.33.4 Linux kernel, a new toolchain, updated libraries, and major applications such as Firefox and Thunderbird.

More details may by found in the official announcement and in the release notes. For a complete list of included packages, see the package list.

Please consider supporting the Slackware project by picking up a copy of the Slackware 13.1 release from the Slackware Store. The discs are off to replication, but we’re accepting pre-orders for the official 6 CD set and the DVD. The CD set is the 32-bit x86 release, while the DVD is a special edition dual-sided disc with the 32-bit x86 release on one side and the 64-bit x86_64 release on the other. And, we still have T-shirts and other Slackware stuff there, so have a look around. Thanks to our subscribers and supporters for keeping Slackware going all these years.

Thanks are again due to the Slackware crew, the developers of slackbuilds.org, the community on linuxquestions.org, Slackware IRC channels, and everyone else who helped out with this release.

Have fun, and enjoy the new stable release!

Pat and the Slackware crew

===

vino-server setting

sugi — Mon, 09 Aug 2010 01:28:33 +0000

Ubuntu 9.04 to 10.04 has application called vino. This is remote desktop application. But it has advance function compare to standard remote desktop that I usually use in System-Preferences-Remote Desktop menu.

Vino server could run in the background and put it in rc.local which will be executed every computer start. And it will display ubuntu login area so the remote control can choose which user he will be enter to.

But now the question is how to configure the setting of this vino, while the standard remote desktop application could be easily be set in the system menu.

We need to go to terminal session.
Application-Accesories-Terminal

Then type this command
#sudo vino-preferences

The vino will display the exact dialog box like standard remote desktop app.

Set the setting you want and click close. Now your vino will run even your standard remote desktop is off.

Minimum Requirements for Slackware 12.2

sugi — Wed, 04 Aug 2010 07:45:37 +0000

Just a little experiment. I wonder if I install slackware 12.2 into old pc, is it work or not. I have amd athlon processor with 128 mb memory, 40 giga of hard drive, foxcon motherboard with intel chipset and integrated vga and sound card. So I install the slack into it. It worked perfectly well.
Slackware has no problem to be installed in such machine. I even tried the kde. It worked fine but a little slow. But not that slow. I am satisfy with the result.

restore trash icon in dolphin – slackware 13

sugi — Mon, 02 Aug 2010 03:26:35 +0000

I accidentally remove trash icon again in dolphin. This is the second one.
I accidentally click on remove trash while I want to empty trash. The old one I just delete the .kde folder in /home/user to restore it. But it erased the mail setting in kmail too. Fortunately I have a backup in other folder.
Today I discover a good news in http://forum.kde.org/viewtopic.php?f=66&t=87237
and there is a guy who tell us about what to do.

edit ~/.kde4/share/apps/kfileplaces/bookmarks.xml
and add this line

1257057166/3
true

Now start dolphin, and the trash icon come back.

jwimagerotator – NextGen Gallery in my web doesn’t work

sugi — Sun, 25 Jul 2010 20:40:18 +0000

NextGen Gallery is one of the best plugin for displaying images in our site in better way. You can browse this plugin in your plugins menu in your wordpress. After installing it and trying to activate, there is a message said I need jwimagerotator that i should download somewhere and put imagerotator.swf file in my uploads folder. It is a standar folder for uploading something. Ow use cpanel or ftp software to upload to your web server.
When you finished with that then go back to wordpress and go to nextgen gallery setting, click option find slideshow. The slideshow function that need the jw image rotator. Download directly the jwimagerotator here.

In the wordpress nextgen gallery setting go to option and slideshow. Fill in the box of Path to the Image Rotator (URL) with this

http://mydomain.com/wp-content/uploads/imagerotator.swf

The important thing is to write down the imagerotor.swf. I made mistake before with guessing it was only need to fill with the directory path only. And the slideshow is not working.

After that, upload your image with nextgen menu. Put it in necessary album and gallery.
Then go to your post in Visual mode and add the nextgen media as an icon in your editing menu.
Choose your desire setting. Then test it.

Download the nextgen-gallery manually here.

Build wp-ecommerce plugin in wordpress

sugi — Wed, 14 Jul 2010 02:58:20 +0000

Wp-E commerce plugin is one of the best plugin in wordpress for commercial use. We can build online shop built in wordpress platform. This is how to use it. I made example on my localhost computer that ready for server use.
I m gonna start it with wordpress installation in the machine with the wordpress 2.9.2 version and wp-e-commerce version 3.7.6.1 and craftycart themes.

Unzip wordpress latest to /var/www/htdoc/
Copy /var/www/htdocs/wordpress/wp-config-sample.php to wp-config.php and edit it.

$cd /var/www/htdocs/wordpress
$cp wp-config-sample.php wp-config.php
$nano wp-config.php

Change these line

/** The name of the database for WordPress */
define(‘DB_NAME’, ‘database name’);
/** MySQL database username */
define(‘DB_USER’, ‘root’);
/** MySQL database password */
define(‘DB_PASSWORD’, ‘dbpassword’);
/** MySQL hostname */
define(‘DB_HOST’, ‘localhost’);

Open your browser and type localhost/wordpress/wp-admin/install.php
Then follow the instruction there.

Now download your e-commerce plugin here. Extract it to /var/www/htdoc/wordpress/wp-content/plugins
Change the permission of the /var/www/htdocs/wordpress/wp-content to 666
#chmod -R 666 /var/www/htdocs/wordpress/wp-content/

Wp-ecommerce plugin need to activate port 21.
It means we neet to activate ftp function.
edit /etc/inetd.conf
as root $nano /etc/inetd.conf
uncommented this line.
ftp stream tcp nowait root /usr/sbin/tcpd vsftpd

as root edit /etc/vsftpd.conf and uncomment local_enable=YES

Now install wp-e-commerce after ftp active
The extraction file contains wp-shopping-cart folder. Move it to /var/www/htdocs/wordpress/wp-content/plugins
Now the plugin is active.

Go to your wordpress dashboard. Usually in the web browser typing this

http://localhost/wordpress/wp-login.php

Log into.
Go to Plugins section on your left screen. Activate wp-e commerce. Edit it, add it to your web.
But remember only use appropriate themes for wp-e-commerce. Not all themes is suit to wp-e-commerce. One of them is this theme.
I hope this plugin is work for you.

done.