Install Notes Oracle Enterprise Linux 6.1

Download the ISO image from edelivery.oracle.com.

Install with "Desktop" pre-configured installation.
And remove Oracle's unbreakable enterprise kernel (uek): yum erase kernel-uek*

• *kernel-devel (for VirtualBox driver compilation)
• gcc-c++
• make

Apache2 PHP Ubuntu User Directory

1. cd /etc/apache2/mods-enabled
2. sudo ln -s ../mods-available/userdir.load .
3. sudo ln -s ../mods-available/userdir.conf .
4. sudo apache2ctl restart
5. The items in ~/public_html should be accessible from http://host/~username

By default, PHP is disabled in user directories. To enable it:

1. Edit /etc/apache2/mods-enabled/php5.conf
2. Delete/comment out the lines related to disabling the user directory execution.

CentOS 5 Configurations

Apache httpd
• yum install httpd
• Append one line in /etc/sysconfig/iptables if it is not there: -A RH-Firewall-1-INPUT -m tcp -p tcp --dport 80 -j ACCEPT

GNOME
• yum install xorg-x11-server-Xorg gnome-desktop gdm

Blender Python Study Notes

The environment has:
C: handle to Blender context
__builtins__: Built-ins of Python 3
bpy: Top level Blender Python API module

Ubuntu Server 10.04 As Desktop Use

(A modified version of previous installation guide, focusing on 10.04 LTS)

Configure Medibuntu source: https://help.ubuntu.com/community/Medibuntu

To disable installing recommended packages, create /etc/apt/apt.conf and put APT::Install-Recommends "false"; in it.

Desktop - system

xserver-xorg
gnome-core
gdm
gnome-themes-selected
humanity-icon-theme
dmz-cursor-theme

Desktop - apps


alacarte (menu editor)
file-roller
evince
gnome-screensaver
gksu
gcalctool
flashplugin-installer
chromium-browser
firefox (Chrome not able to display XML files with a XSL stylesheet)
language-support-??
brasero (ISO burner)
gnome-utils (including baobab -- a disk usage analyser, gnome-dictionary, gnome-search-tool, gnome-system-log, and gnome-screenshot)
gnome-bluetooth
*jockey-gtk (the proprietary driver manager)
*network-manager
*network-manager-openconnect (for Cisco AnyConnect VPN)
*kchmviewer
*gconf-editor

Development:
g++
gdb
openjdk-6-jre
*freeglut3-dev
*dia
*mysql-server
*libmysql-java (the JDBC driver)
*mysql-admin
*python-mysqldb
*apache2
*php5
*php5-mysql
*php5-sqlite
*libqt4-dev
*libqt4-opengl-dev
*libqt4-sql-sqlite
*qt4-doc
*qt4-dev-tools
*qt4-designer

Remote access
vinagre (the client; you might want to disable the keyboard shortcuts in the preferences menu)
vino (the server)

Media
alsa-base
alsa-utils
gnome-codec-install
audacious
libdvdcss2
non-free-codecs
*vlc
*mozilla-plugin-vlc
*banshee
*banshee-extension-soundmenu (for ubuntu 11.04)
*totem

Gaming
playonlinux (front end of wine)

Printing
system-config-printer-gnome
cups
*smbclient (for Windows shared printing)
*hplip (HP printer drivers)

Configuration

• Enable audio:
  1. alsamixer
  2. Press "M" to (un)mute channels
• Clear screen when logout:
  1. ~/.bash_logout
  2. insert single command clear
• Disable Ctrl-Alt-Del:
  1. /etc/init/control-alt-delete.conf
  2. comment out the actual command line
• Let vim display line numbers:
  1. sudo echo set nu >> /usr/share/vim/vimrc (if there is no such line)
• Secure login/out logs:
  1. sudo chmod 640 `sudo find /var -name ?tmp`
• NetworkManager system tray icon:
  1. edit /etc/NetworkManager/nm-system-settings.conf
  2. make the line read managed=true
  3. sudo /etc/init.d/network-manager restart
• Stop GDM from auto starting:
  1. /etc/init/gdm.conf
  2. comment out all "start on" stuff
• Configure GRUB:
  1. /etc/default/grub
  2. update-grub
• MySQL
  1. Add line default-storage-engine=INNODB to /etc/mysql/my.cnf
  2. to reset root password: sudo dpkg-reconfigure mysql-server-5.1
• Remote login
  1. vino-preferences

KDE on Ubuntu Server 11.04

Configure Medibuntu source: https://help.ubuntu.com/community/Medibuntu

Packages

Desktop

• kde-plasma-desktop (xserver-xorg and kdm included)
• chromium-browser
• flashplugin-installer
• language-support-??
• kchmviewer
• network-manager-kde
• jockey-kde

Development

• g++
• make
• gdb
• openjdk-6-jre
• qt4-dev-tools

Media

• amarok

Configuration

NetworkManager

• edit /etc/NetworkManager/NetworkManager.conf
• make the line read managed=true
• sudo service network-manager restart
  

Python Notes

os.wait() will return the oldest finished jobs

Vim Recording

Ref: http://www.thegeekstuff.com/2009/01/vi-and-vim-macro-tutorial-how-to-record-and-play/

Start recording by pressing q, followed by a lower case character to name the macro
Perform any typical editing, actions inside Vim editor, which will be recorded
Stop recording by pressing q
Play the recorded macro by pressing @ followed by the macro name
To repeat macros multiple times, press : NN @ macro name. NN is a number

32-bit and 64-bit packages in CentOS 5 x86_64

yum -y remove *.i386 *.i486 *.i586 *.i686

*Not recommended but you can prevent yum from installing 32-bit software by adding this line to section [main] in /etc/yum.conf:
exclude=*.i386 *.i586 *.i686

MySQL (RHEL5)

chkconfig mysqld on
/etc/init.d/mysqld start
Login mysql
CREATE USER 'user1'@'localhost' IDENTIFIED BY 'passpass'; (passpass is the password you use to login)
DROP USER 'user2'@'localhost'
GRANT ALL ON *.* TO 'user1'@'localhost'; (wildcard % is allowed for * match)
USE mysql
UPDATE user SET password=PASSWORD("passpass") WHERE User='user1';
FLUSH PRIVILEGES;

Modify MySQL configuration file (/etc/my.cnf for Fedora-based linux; /etc/mysql/my.cnf for Debian-based linux), so it looks like this:

[client]
max_allowed_packet=1024M
[odbc]
max_allowed_packet=1024M
[mysqld]
max_allowed_packet=1024M
slave_transaction_retries=128
default-storage-engine=INNODB
datadir=/mnt/MD_1000/mysql
user = mysql
socket = /var/run/mysqld/mysqld.sock
port = 3306

Open port 3306 for remote administration:
/sbin/iptables -A INPUT -i eth0 -p tcp --destination-port 3306 -j ACCEPT
Or if the only allowed client (e.g. your web server) is 10.5.1.3, then:
/sbin/iptables -A INPUT -i eth0 -s 10.5.1.3 -p tcp --destination-port 3306 -j ACCEPT

Save iptables rules:
service iptables save

Backup/dumping with limited rows (e.g. to build a sample database from a large one)
mysqldump -u [username] -p [databaseName] --where="true limit 100" > dump.sql