Shrink eps size under Linux

When generate some pdf files using Inksape, sometimes it ends up a large file. However, you can follow some steps to reduce the size:
1. gs -r300 -dEPSCrop -dTextAlphaBits=4 -sDEVICE=png16m -sOutputFile=fig-reduce.pdf -dBATCH -dNOPAUSE fig.eps
2. convert fig-reduce.pdf fig-new.eps
3. import the fig-new.eps to Inkscape again, and save as fig-new.pdf.

The final file will be much smaller than the original one.

Add node to cluster

The operation system is CentOS.
1. Disable/turn off linux firewall on the headnode before installation
#/etc/init.d/iptables save
#/etc/init.d/iptables stop

Turn on Linux firewall on the headnode after installation
#/etc/init.d/iptables start
#bash ./iprules ;define iptables rules.

2. PXE boot
default root password: PASSWORD

3. check files:
/etc/resolv.conf
search headnode
nameserver xx.xx.xx.xx

/etc/sysconfig/ifcfg-eth0
DEVICE=eth0
BOOTPROTO=dhcp
DHCPCLASS=
HWADDR=XX:XX:XX:XX:XX:XX
ONBOOT=yes

/etc/hosts

/etc/fstab ; add the following line
XX.XX.XX.XX:/home /home nfs rw,sync 0 0

3. install NIS(YP) service
yum install ypserv

4. disable SELinux
/etc/selinux/config ;change "enforcing" into "disabled"
SELINUX=disabled

5. add/change lines in files:
/etc/nsswitch.conf
passwd: files nis nisplus
shadow: files nis nisplus
group: files nis nisplus
hosts: files nis dns

/etc/password ;add the following line at the end of this file
+======

6. restart node

7. modify the following files:
/etc/rc.d/rc.local ;add the following line to the end of the file
/bin/nisdomainname DOMAIN

/etc/yp.conf ; add the following line to the end of the file
ypserver headnode

/etc/sysconfig/network
NETWORKING=yes
NETWORKING_IPV6=yes
HOSTNAME=host
NIDDOMAIN=DOMAIN

/etc/sysconfig/authconfig
USENIS =no -> USENIS=yes

/etc/pam.d/system-auth
password sufficient pam_unix.so md5 shadow nullok try_first_pass use_authtok ->
password sufficient pam_unix.so md5 shadow nullok try_first_pass use_authtok nis

8. Activate NIS
#/etc/init.d/portmap start
#chkconfig --level 35 portmap on
#/etc/rc.d/ypbind start ; if some error, check /etc/yp.conf, and rerun "/etc/init.d/portmap start"
#chkconfig --level 35 ypbind on
#ypcat passwd

9. Install software:
#yum groupinstall "Development Tools"
#yum groupinstall "X Window System" "GNOME Desktop Environment"

Activate partition under Windows 7

DISKPART
LIST DISK
SELECT DISK # (for Windows 7 disk)
LIST PARTITION
select partition # (for Windows 7 partition)
active
exit

CentOS PXE server setup.

Here we use FTP server.
1. Install DHCP server
yum install dhcp
vi /etc/dhcpd.conf
We can use /usr/share/doc/dhcp-3.0.5/dhcpd.conf.sample as an example or check my last post.
2. Install TFTP server
yum install tftp-server
vi /etc/xinetd.d/tftp
change the line to be: disable = no
3.Create Network installation source
yum install vsftpd
mkdir –p /var/ftp/install/centos/x86_64/5.3/
mount –t iso9660 -o loop CentOS-5.3-x86_64-bin-DVD.iso /media/cdrom/
cp –avr /media/cdrom/* /var/ftp/install/centos/x86_64/5.3/
4.start the DHCP,TFTP, VSFTP servers
/etc/init.d/dhcpd restart
/etc/init.d/xinetd restart
/etc/init.d/vsftpd restart
5. Setup tftp boot files
cp /usr/lib/syslinux/pxelinux.0 /tftpboot
mkdir –p /tftpboot/images/centos/x86_64/5.3/
cp /var/ftp/install/centos/x86_64/5.3/images/pxeboot/vmlinuz images/centos/x86_64/5.3/
cp /var/ftp/install/centos/x86_64/5.3/images/pxeboot/initrd images/centos/x86_64/5.3/
6.Create PXE menu
cp /usr/lib/syslinux/menu.c32 /tftpboot
mkdir /tftpboot/pxelinux.cfg
touch /tftpboot/pxelinux.cfg/default
vi /tftpboot/pxelinux.cfg/default
This is a concise version. More details can be found through here.


Ubuntu PXE boot server setup.

Here I use HTTP server for the PXE boot.
1. Install Ubuntu 9.04 server.
2. Install DHCP server and modify the configure file.
apt-get install dhcp3-server
vi /etc/dhcp3/dhcpd.conf

The new dhcpd.conf should look like:

option domain-name-servers 145.253.2.75, 193.174.32.18;

default-lease-time 86400;
max-lease-time 604800;

authoritative;

subnet 192.168.0.0 netmask 255.255.255.0 {
    range 192.168.0.10 192.168.0.49;
    next-server 192.168.0.1;
    filename "pxelinux.0";
    option subnet-mask 255.255.255.0;
    option broadcast-address 192.168.0.255;
    option routers 192.168.0.1;
}

2. Install TFTP server

apt-get install tftpd-hpa
vi /etc/default/tftpd-hpa

change the line to be: RUN_DAEMON=”yes”

mount -t iso9660 -o loop Ubuntu-install.iso /media/cdrom/

cp -r /media/cdrom/netboot/* /var/lib/tftpboot/

vi /var/lib/tftpboot/pxelinux.cfg/default

3.Install APACHE2 server:

apt-get install apache2

mkdir -p /var/www/install/ubuntu/9.04/

cp -r /media/cdrom/* /var/www/install/ubuntu/9.04/

4. Start all the servers

/etc/init.d/dhcpd restart

/etc/init.d/tftpd-hpa restart

/etc/init.d/apache2 restart

Now, we can install the ubuntu 9.04 through 192.168.0.1.

Notice: when the installation comes to select a mirror, go to the first line and input the server information for 192.168.0.1.

Ubuntu 8.04下ppstream的安装

早就听说ppstream出了linux版本，一直没有尝试。今天终于有空试一下，这里的Linux版本是Ubuntu 8.04(Hardy Heron)，现在虽然9.04已经出来了，不过觉得这个版本还是用得比较舒服，也就懒得升级。
闲话少说，最开始是在ppstream官网上下载了安装包，的确能用，但是没有给playlist，就那么几个片子，很是无聊。于是google了一下，ubuntu论坛上讨论了安装Totem插件的形式，可以参考这个连接http://forum.ubuntu.org.cn/viewtopic.php?f=74&t=223582&start=0。实际上可以到：http://people.freedesktop.org/~jinghua/distfiles/gst-plugins-pps-0.0.15.12.tar.gz下载打包好的几个Deb安装文件。可惜的是，在湛卢的机器上安装后，又由Totem自动搜索安装了ffmpeg等软件包，还是不能播放rmvb格式的url。
后来想到6park上有人贴过比较详细的安装笔记，赶紧上去看看，找到了链接：http://pop.6park.com/know1/messages/32181.html。按照此文的方法，本想安装Totem插件，于是先安装了git，再
＃git clone git://anongit.freedesktop.org/~jinghua/gst-plugins-pps，
可惜运行到
＃./autogen.sh
的时候出错了，原来缺少好几个包，automake, libtool, gstreamer开发程序包，于是逐一apt-get install。最后都安装好了，于是
＃./configure --prefix=/usr
＃make
＃sudo make install
可惜的是运行的时候还是说没有RealMedia的codecs。于是又google了一下，似乎大家都说要安装w32codecs，可惜现在这个包已经是找不到了。
还好，http://pop.6park.com/know1/messages/32181.html上面还介绍了mplayer下面的安装，这里不再详细叙述，就是下载http://ppshell.googlecode.com/files/pps-mplayer_install.tar.gz，然后解压、安装。
为了更方便可以下载http://ppshell.googlecode.com/files/ppshell.py，然后chmod +x ppshell.py 然后在命令行运行 ./ppshell.py，

使用方法：

进入菜单后，

1. 输入数字进入对应选项的子菜单，或者选择某个视频并显示其tvod地址(并添加到playlist.txt中)
2. b 返回上一级菜单
3. r 刷新当前级菜单的临时缓存
4. p 调用pps播放playlist.txt列表中的视频
5. a 将当前菜单中的所有视频添加到播放列表（在分类菜单中无效）
6. s 搜索视频，格式为 "s 搜索字符串"，支持正则表达式

这样就可以在命令行下面使用ppstream。

MSN under Windows XP 64bit.

1) Download the full installer from Microsoft:
http://download.live.com/?sku=messenger

It should be named "wlsetup-all.exe" (not the web version "wlsetup-web.exe), try several times then you will get it.

2) Use this patcher at your own risk :-) I tried it and works..

http://oss.netfarm.it/wlm.php

3) Launch the patched installer

4) Enjoy...
Source(s):
http://www.techspot.com/blog/129/how-to-run-windows-live-messenger-on-windows-xp-x64/

http://oss.netfarm.it/wlm.php