I have a piece of very good music in an MP4 video file and I’d like to listen over and over to it. With mplayer, I can single cycle this file with option -loop 0. Moreover, I want just play the audio but not the video, so I search the man page of mplayer and find this:...... Read more
We know that scp is a command for secure copy. It copies file between hosts on a network. Normally, we follow the below two examples to copy a file from/to localhost to/from a remote machine:...... Read more
There is an extremely old machine in our lab and today I want to use it as a node in our Hadoop cluster. There was a Fedora 8 on it. But I’d like to change it to a new CentOS 5.7. The problem I met, was that our machine was too old, and that neither the CD-ROM nor the USB ports work well....... Read more
实验室有台非常老的机器，今天被我翻出来打算当作我们Hadoop集群中的一个节点。这台机器上原有一个Fedora 8可以用，不过我还是想给它安装一个全新的CentOS 5.7。不过有个问题，就是这台机器太老了，光驱和USB接口竟然全都坏掉了。...... Read more
The first issue I met, after I logged in to my newly installed Arch Linux, is that I have to change the MAC address to gain access to our campus network. I wrote a short essay about how to change the MAC address in Linux before (see this). In that article, I introduced how to change the MAC address temporarily using ifconfig and permanently editing the network configure file in Red Hat/CentOS/Fedora or Debian/ubuntu. But I found no ifconfig available in my new Arch Linux (I must had missed some essential package that contains ifconfig during the installation.). So I have to find another method, and fortunately, there is an “Arch Way”....... Read more
In this post we talk about how to install Puppy Linux to portable hard drive from Linux, with GRUB as the Boot Loader....... Read more
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