24 Jun 2009 Howto decompose a SWF Adobe Flash file
This post describes howto decompose a SWF Flash-file using linux and a program named swfextract. The post came to life because I had to do some changes to one of my flash presentations but I had deleted all the source files. After searching the Internet i doscovered swfextract.
SWF Tools is a collection of SWF (Flash) manipulation and creation utilities like pdf2swf, jpeg2swf, png2swf, gif2swf, font2swf, wav2swf, swfcombine, swfdump, swfstrings, swfbbox and swfc. But I’m only going to use swfextract in this post.
If you don’t have it installed on your system, download it and install the deb-package
# wget http://http.us.debian.org/debian/pool/main/s/swftools/swftools_0.8.1-2.1_i386.deb # dpkg -i swftools_0.8.1-2.1_i386.deb
The swftools package depends on several packages like libgif4 libt1-5 and they should be installed before swftools
# aptitude install libgif4 libt1-5
I was interested in extracting the image files in my Flash presentation and did the following to determine what was in the presentation file
# swfextract flashfile.swf Objects in file flashfile.swf: [-i] 5 Shapes: ID(s) 1, 3, 5, 7, 9 [-j] 4 JPEGs: ID(s) 2, 6, 8, 10 [-f] 1 Frame: ID(s) 0
As we see above there are 4 JPEG-files I'm interested in extracting and their IDs.
I did the following to extract the image files
# swfextract -i 2 -j 2,6,8,10 flashfile.swf
Result files
output.swf pic10.jpg pic2.jpg pic6.jpg pic8.jpg
If you don't use the -i switch you will end up with only one output.jpg file.
You are now ready to recreate the Flash presentation using the extracted image files.
Source
http://www.swftools.org
SWF Tools
Tags: adobe, decompose, extract, Flash, howto, SWF, swfextract
Posted by Hans-Henry Jakobsen
23 Jun 2009 HowTo use lftp as a sftp client
lftp is a file transfer program that allows sophisticated ftp, http and other connections to other hosts. If site is specified then lftp will connect to that site otherwise a connection has to be established with the open command.
Basic usage
- lftp sftp://[domain name]
- lftp sftp://example.com
Use a different user name than the one you are currently using
- lftp sftp://[user name]@[domain name]
- lftp sftp://username@example.com
Use a different port and different user name
- lftp sftp://[user name]@[domain name]:[port number]
- lftp sftp://userName@example.com:2222
Recursive download/upload
lftp> mirror directory_to_download lftp> mirror -R directory_to_upload
For more lftp options type the following command in a console window
# man lftp
Posted by Hans-Henry Jakobsen
17 Jun 2009 Using DynDNS to access a server with dynamic IP-addresses
This post describes how you can access your server using a host name instead of the dynamic IP addresses (from DHCP) it has assigned at the moment. I’m going to describe how to use DynDNS, but this also applies to other services like EasyDNS, DSLreports.com and ZoneEdit. This tutorial has been tested on my Ubuntu 9.04 home server. You need to create an account at DynDNS if you are planning to to this.
First you have to install the ddclient package and in debian and Ubuntu you run the command
# aptitude install ddclient
To reconfigure ddclient
# dpkg-reconfigure ddclient
You should validate the config file /etc/ddclient.conf to make sure your settings are right.
This is the content of my config file
# Configuration file for ddclient generated by debconf # # /etc/ddclient.conf pid=/var/run/ddclient.pid protocol=dyndns2 use=if, if=eth2 server=members.dyndns.org login=username password='mysecretpassword' hostname.dyndns.org
You can see that I user network interface eth2 as my internet connection and my login and password is the information I registered at DynDNS.com
Restart the ddclient daemon if you do any changes to the config file
# /etc/init.d/ddclient restart
You are now able to connect to your server using the hostname you defined in the server line in the config file, in my case hostname.dyndns.org
Posted by Hans-Henry Jakobsen
12 Jun 2009 Replace specific HTML tags using sed and regular expression
In this post I would like to replace all <embed> HTML tags in a HTML file with a <strong> tag.
# sed -e 's/<embed[^>]*>/<strong>/g' filename.html > newfile.html
And if you would like to remove the <embed> tag altogether
# sed -e 's/<embed[^>]*>//g' filename.html > newfile.html
To remove all HTML tags in a file
# sed -e 's/<[^>]*>//g' filename.html > newfile.html
The result file newfile.html is now without any < HTML tags >.
Tags: html, regexp, replace, sed
Posted by Hans-Henry Jakobsen
05 Jun 2009 Howto install Skype on a 64bit Ubuntu 9.04
This post describes how to install Skype, the popular VOIP and video conference program on a 64bit Ubuntu 9.04 (Jauty Jackalope) system.
# sudo apt-get install ia32-libs lib32asound2 libqt4-core libqt4-gui # wget -O skype-install.deb http://www.skype.com/go/getskype-linux-ubuntu # sudo dpkg -i --force-architecture skype-install.deb
The application should now be located under Applications -> Internet -> Skype.
Tags: 9.04, Jaunty Jackalope, skype, Ubuntu
Posted by Hans-Henry Jakobsen
