file IO tuning, iotop

To check File IO, this iotop is one of best solution.
“Linux has always been able to show how much I/O was going on (the bi and bo columns of the vmstat 1 command).

Iotop is a Python program with a top like UI used to show of behalf of which process is the I/O going on. It requires Python ≥ 2.5 and a Linux kernel ≥ 2.6.20.”

For Suse 11
Simply type “yum install iotop”.

Iotop’s homepage

Create MS-DOS Bootdisk. without HIMEM

When we flash bios or do something simple, we still using old MS-DOS.

but how we can create MS-DOS bootable disk with windows xp or vista?

well answer is we can create one from format option of xp or vista. but what if you like to have windows 98 MS-DOS bootable disk.


this is how to do.


Get image form

follow instruction how to do at


few bios update program hate HIMEM support. avoid MS-DOS load HIMEM,

edit config.sys to not load HIMEM.

Download BitTorrents on linux/unix pure console

Downloading BitTorrent on Linux without GUI.

1. Install BitTorrent

$ yum -y install bittorrent

2. get torrent that you want to download

3. let start download bittorrent

$ bittorrent-curses ‘[222].torrent’


$ bittorrent-curses ‘some_file[222].torrent’ 


Requirements :

You must have Python 2.3 above.

to check version of Python simply type python -V from command line


Software :

Virtualmin domain(s) configuration files

When you setup domain with virtualmin, sometime you want to change after while.

eg., administrative username

modify domain(s) without re-setup entire domain(s), edit following file.

1. [[email protected] ~]# cd /etc/webmin/virtual-server/

2. [[email protected] virtual-server]# cat sample.local.act

change sample.local as your domain name

3. see where it says domains=117160406314152

remember number of domains.

4. [[email protected] virtual-server]# cd domains/

5. [[email protected] domains]# vim 117160406314152 number you find before.

6. edit and save. done!

Install php 5 on CentOS 4

How to install php 5 on CentOS 4.

1. Modify vi /etc/yum.repos.d/CentOS-Base.repo 

#additional packages that extend functionality of existing packages
name=CentOS-$releasever – Plus
enabled=1 ←Change it to 1
#contrib – packages by Centos Users
name=CentOS-$releasever – Contrib
enabled=1 ←Change it to 1


2. yum -y update php or yum -y update

3. if no error, it done.

Dictionary Trainer (Mac OS X)

How to stop Dictionary Trainer on Mac OS X.

1. Open /home/library/Preferences/ com.appple.JapaneseAnalysis / DictionaryTrainer / Trainer.dict

with koetori register words.

2. import file into any user specified dictionary.

3. delete processedMail file on /home/library/Preferences/ com.appple.JapaneseAnalysis / DictionaryTrainer /

4. Restart your mac and Done