Note of Aptitude

Reference:
http://wiki.ubuntu-tw.org/index.php?title=Aptitude
http://man.ddvip.com/linux/debian/aptitude/index.html

• Package status

State	Description	Note
p	(p)urged	The package is not installed
i	(i)stanlled	The package is installed
u	(u)npacked	The package is unpacked but not installed
v	(v)irtual	Tha package is a virtual package
c	(c)onfig remains	The package is removed, but there are still configuration files
C	half (C)onfigured	The package is configured, but the configuration process is not complete
B	(B)roken	The package is broken because dependency can't be satisfied
E	(E)rror	Internal error

• Package Action
  

Actions	Description	Note
h	(h)old	The package will be hold in current version
p	(p)urge	The package will be purged
d	(d)elete	The package will be deleted (config will remain)
i	(i)install	The package will be installed
r	(r)einstall	The package will be reinstalled
u	(u)pgrade	The package will be upgraded
A	(A)utomatic	The package is automatically installed

• Some key binding

Key	Decription	Note
+	Install	Mark the package to be installed
-	Remove	Mark the package to be removed
_	Purge	Mark the package to be purged
=	Hold	Mark the package to be hold to prevent future upgrade
M	Auto	Mark the package as automatically installed. It will be removed if there are no long package depends on it
m	Manual	Mark the package as manually installed
:	Cancel	Cancel pending actions to the package
g	Go	Execute pending actions
b	Break	Search break packages
C	ChangeLog	See changelog of the package
d	Depends on	See dependencies of the package
r	Relate to	See packages depends on the given package
f	Forget new	Clear packages shown as new
/	Search	Search the package
\	Backward search	Search the package backward
Ctrl+u	Recover	Recover last action
Ctrl+t	Menu	Move to menu bar

• Command line

Actions	Description
install	Install the package. You can also specify flags such as _,-,+,M... For example, you can use the command "aptitude install A+ B- C_ D+M" to install A, remove B, purge C, and install D and mark D as auto
remove	To remove a package
purge	To purge a package
update	To update package list
safe-upgrade	Upgrade currently installed packages
full-upgrade	Upgrade the whole system
clean	Clean the cache
auto-clean	Clean unnecessary .deb in the cache
download	Download .deb package

• Search Pattern

Please refer to Table 2.1 in the aptitude manual
Here are some examples in Chinese.

wine setting

The link details wine setting.
There is also solution to chinese display in it.
resource: http://www.ubuntu-tw.org/modules/newbb/viewtopic.php?topic_id=21674&forum=14

Grub 2 guide

http://ubuntuforums.org/showthread.php?t=1195275
https://help.ubuntu.com/community/Grub2

HTML encoder

To post HTML code on your blog, you should first HTML encode it.
That will escape interpretation of blog.

http://www.opinionatedgeek.com/dotnet/tools/htmlencode/Encode.aspx

Blogspot remove table blank

To remove the big blank in blog spot, you wrap you table like this:

<style type="text/css">.nobrtable br { display: none }</style><br /><div class="nobrtable">


Your Table...


</div>

Ubuntu component summary

Ubuntu has four components, they are grouped according to License Policy.

• Main component contains free software and fully supported by Ubuntu.
• Universe component contains free softwares from open source world. They are not guaranteed with fixed by Ubuntu.
  
• Restricted component contains popular software which is not completely free. Ubuntu team supports the software. (The support may not complete because the license may prohibit Ubuntu from modifying for the bug fix.)
• Multiverse component contains non-free software

Here is a summay table.

	Free software	non-free software
Offical Support	main	restricted
Unofficial	universe	multiverse

Reference documents:
http://wiki.ubuntu.com/Ubuntu/ForDebianDevelopers
http://http://www.ubuntu.com/community/ubuntustory/components

Download deb file by apt-get

Use apt-get -d install PACKAGE-NAME
The deb package will be put on /var/cache/apt/archieves

ubuntu-9.10 and JDK-5

Because JDK6 is removed by Ubuntu-9.10 (Karmic)
We need to add the following line to /etc/apt/sources.list

deb http://us.archive.ubuntu.com/ubuntu/ jaunty multiverse
deb http://us.archive.ubuntu.com/ubuntu/ jaunty-updates multiverse

NAND flash and NOR flash

Reference: http://en.wikipedia.org/wiki/NOR_flash

NOR Flash

• Random access
• Large block size
  
• Long erase/program time

NOTE: 1->0 by byte basis, 0->1 by block basis

NAND Flash

• Block access
• Small block size
  
• Fast program/erase time