Wednesday, June 29, 2011

[Level 1] How to install Jython on Ubuntu.

You have two way to install jython on Ubuntu:
1. Use apt-get:
# sudo apt-get -y install jython
# jython --version
2. Download source:
# cd /tmp
# wget http://sourceforge.net/projects/jython/files/jython/2.5.2/jython_installer-2.5.2.jar/download
# mv ./download ./jython.jar
# java -jar ./jython.jar
... following the wizard.
# export PATH=$PATH:/opt/jython/bin # (if you installed Jython in /opt/jython)
# jython --version
Wish this helps.
regards,
Stanley Huang

[Level 1] How to install Scala on Ubuntu.

You have two way to install it.
1. Use apt-get:
# sudo apt-get -y install scala
2. Download source: (browse http://www.scala-lang.org/downloads first)
# cd /opt
# wget http://www.scala-lang.org/downloads/distrib/files/scala-2.9.0.1.tgz
# tar -C /opt zxf ./scala-2.9.0.1.tgz
# export PATH=$PATH:/opt/scala-2.9.0.1/bin
# scala -version
Wish this helps.
regards,
Stanley Huang

Tuesday, June 28, 2011

[Level 2] Enable wireless of network-manager in Ubuntu 11.04

Once you upgrade Ubuntu from 10.04 to 11.04, and you will find out the network-manager won't manage wireless any more. But you still could change NetworkManager.conf to enable it.
# sudo vi /etc/NetworkManager/NetworkManager.conf
and change "managed" attribute from "false" to “true“ and restart it.
# sudo /etc/init.d/network-manager restart
Wish this helps.
regards,
Stanley Huang

Wednesday, June 22, 2011

[Level 1] How to set ntp client in Ubuntu.

If you want to sync time with time server in Ubuntu,
you could use command ntpdate + time_server.
And don't forget write date into bios too.
ntpdate time.stdtime.gov.tw && hwclock -w
Wish this helps.
regards,
Stanley Huang

Wednesday, June 15, 2011

[Level 1] How to grep in file.

Just use -P and '\t' with grep command.
Ex.
# grep -P '\t' /etc/passwd 
Wish this helps. regards, Stanley Huang

Wednesday, June 1, 2011

[Level 1] MP3 editor in Ubuntu.

If you want to modify mp3 in Ubuntu,
you could use "audacity".
And you could download it from reposity.
The commands as the following.
# apt-cache search audacity
create-resources - shared resources for use by creative applications
audacity - fast, cross-platform audio editor
audacity-data - fast, cross-platform audio editor (data)
audacity-dbg - fast, cross-platform audio editor (debug)
vamp-plugin-sdk - audio analysis and feature extraction plugins (SDK)
# apt-get -y install audacity

After for a while, I heard a good tool to convert mp4 to mp3 call avidemux
# apt-cache search avidemux
libavidemux0 - a free video editor - shared libraries
avidemux - a free video editor - GTK version
avidemux-cli - a free video editor - command line version
avidemux-common - a free video editor - Internationalization files
avidemux-plugins-cli - a free video editor - CLI plugins
avidemux-plugins-common - a free video editor - common files for plugins
avidemux-plugins-gtk - a free video editor - GTK plugins
avidemux-plugins-qt - a free video editor - Qt plugins
avidemux-qt - a free video editor - QT version
# apt-get -y install avidemux

Wish this helps. regards, Stanley Huang