envio land » life

XL award 2011

envio — Thu, 29 Dec 2011 00:55:46 +0000

Linux Free Up Cache Memory

envio — Mon, 07 Nov 2011 02:54:06 +0000

For my personal note :p

drop_caches

Writing to this will cause the kernel to drop clean caches, dentries and inodes from memory, causing that memory to become free.

To free pagecache:

echo 1 > /proc/sys/vm/drop_caches

To free dentries and inodes:

echo 2 > /proc/sys/vm/drop_caches

To free pagecache, dentries and inodes:

echo 3 > /proc/sys/vm/drop_caches

Source : http://www.linuxinsight.com/proc_sys_vm_drop_caches.html

Silly Yahoo Messenger Preference

envio — Thu, 15 Sep 2011 05:23:30 +0000

I just try new version of yahoo messenger, after couple minute try, I feel not comfortable with it, the response very rather my old version. Then I decide to uninstall it and re-install my old version.

After the old install, I lost my yahoo preference. My favourite silly preference is display yahoo messenger name every time I did enter/send message. The default preference only display my Yahoo ID on first message.

I have search on Yahoo Messenger setting and found nothing. Then after couple minute browsing, I found way to change the setting. I use CTRL+SHIFT+ 0 / 1 / 2

Finally my favourite silly setting is back hahahhahah

Export data from MySQL “View”

envio — Thu, 04 Aug 2011 02:56:53 +0000

Recently I need dump some data from my database, since I am not the developer of the application I have to study first about data structure. I found the application use “view” , actually I have no experience with view

I did export using phpMyAdmin as usual, I did export view as regular table, and export it to SQL file. After review the SQL file result, I found the SQL file was not as I expected

Finally I found the way how to export data, I change the export output to “CSV” not SQL and the method work fine hahahhaha

Epson T13 General Error

envio — Wed, 29 Jun 2011 11:43:48 +0000

When T13 printer is turned on, the printer will do a track test, card ridge will move to the right and left. At that time, when card ridge can not reach the maximum point in the right or the left it will be considered as “general error”. Make sure no objects are blocking when card ridge track test.

Very Slow DVD Burning

envio — Fri, 03 Jun 2011 09:44:58 +0000

It’s long time for me to not back up data on my laptop to DVD, this afternoon I decide to backup my data on DVD. When I complete do compilation with nero and start burning the data, a annoying happen, It’s need more than 30 minute to pass burning 700Mb file on 8X speed what a very-very slow burning speed. T,T

I though my DVD writer on my laptop is bad or damage since it’s has 3 year server me, then I decide to find out on google. I found information that the DVD drive randomly change the data transfer mode to PIO only.

I check my “device manage” on my XP, go to IDE ATA /ATAPI Controller I double click Primary IDE controller , Advance Setting and found the transfer mode now is PIO only T,T that the source of my burning trouble T,T woooaahh ….

I change the transfer mode to DMA if available and click okay … woallah my burning process speed increase dramatically …..

Silly first slide on bxSlider

envio — Mon, 30 May 2011 02:01:04 +0000

Recently I use bxSlider on my web project, it’s nice and cool jQuery content slider with many option, I like it so much When I implement it on my web, a silly problem happen, at first the first slide is always cut off on the right side and pieces of content appear in the left.

The solution for that silly thing is add some CSS code, I found this on bxSlider example page, and implement it on my CSS code.
* { margin:0; padding:0; outline: 0; }

IBM x3250 M3, SATA as IDE

envio — Tue, 03 May 2011 01:49:57 +0000

Recently I am disappointed with my IBM x3250 M3 run CentOS linux, the performance is very bad. After investigate I found my SATA drive ( I use two SATA hard drive , 250GB and 500GB) detected by CentOS as IDE drive, as hda and hdb. When I test read and write speed used “hdparam”, the result was terribel , it’s below 10MB/s

Today I re-check the BIOS configuration, under System Setting the only option of SATA drive is “configure SATA as IDE” and I try change the mode from “Compability Mode” to “Native Mode”. I save the BIOS configuration and reboot the server, and the result is very fantastic, now my two harddrive detected as SATA, it recognized as sda and sdb , I am very right now. I test with “hdparam” the speed impressive

/dev/sda:
Timing cached reads: 27160 MB in 1.99 seconds = 13620.52 MB/sec
Timing buffered disk reads: 338 MB in 3.02 seconds = 112.07 MB/sec

How To Install svn on centos (64bit)

envio — Thu, 23 Sep 2010 08:06:46 +0000

When you try to install svn on 64 centos linux you will get some error, perl(URI) is missing. The solution is very simple, download the perl-URI rpm package from address below:

http://mirror.centos.org/centos/5/os/i386/CentOS/perl-URI-1.35-3.noarch.rpm

Install it manually using rpm -ivh perl-URI-1.35-3.noarch.rpm

After it finish, then we can install svn by using this command

yum install subversion

Yup , that’s it

YET Another Gumblar

envio — Fri, 27 Aug 2010 14:47:48 +0000

Today I have deal with my client to clean all chaos caused by Gumblar virus, It’s seem his root password was stolen and all web data infected with code. The virus code snippet is like this:

var D;if(D!='' && D!='X'){D=''};var U=new Array();var p="";function u(){var aY=new Date();

The condition , all index file , index.html or index.php was injected. The virus code injected on last line of file. After couple hour browse I didn’t find any solution to this problem and this make me confused, it will horrible if I have to remove the virus code one by one.

After two hour doing experiment finally I found the way how to remove the virus, just use bash script , using “grep” , “find” , “cut” , “grep” , “xargs” and “sed”.