Linux

The performance of Xen’s Dom0 is important for the overall system. The disk and network drivers are running on Dom0. I/O intensive guests’ workloads may consume lots Dom0′s CPU cycles. ... read more »

How to jailbreak Apple iPod touch in Linux will be introduced in this article. We use Spirit to jailbreak iPod touch. Spirit[1] is an untethered jailbreak for iPad, iPhone, and ... read more »

I don’t use xdm, gdm or kdm… I prefer my Linux booting to init 3. I like logging in to the command-prompt and starting X manually with startx. In my ... read more »

The NVIDIA video card driver in Linux will display the NVIDIA logo by default during booting the X server after we successfully installed the driver. If we don’t like to ... read more »

MAC stands for Media Access Control which is a six byte number, usually expressed as a twelve digit hexadecimal number. IPs in LAN are translated to MAC address by the ... read more »

How to set date, time and timezone on Linux/Unix box will be introduced in this post. Unix time, or POSIX time which is a system for describing points in time is ... read more »

mplayer/mencoder are powerful tools. This is a list of useful mplayer/mencoder commands. Extract the audio, convert it to PCM and write the resulting wave file to audio.wav: mplayer -vo null -hardframedrop -ao ... read more »

The ports used by NFS server can be dynamically assigned by rpbind to any higher number. We need to fix the ports used by NFS server to configure firewall or ... read more »

We may not want to update kernel on a stable server while updating the application in the system. If we use “yum update”, we may install the new kernel. In ... read more »

I believe many users are using pidgin and google apps. Google apps support Google Talk. Can we use it in Pidgin? The answer is yes. How to use Google apps ... read more »

How to set up eCryptFS in Linux will be introduced in this post. We can store encrypted files in one eCryptFS directory. The content can be seen only after it ... read more »

tmpfs has blazing speed. Why not set up a high speed NFS server on top of tmpfs? A little trick is required for setting NFS server on top of /dev/shm. If ... read more »

Firefox can be much faster on Linux! Let’s speed up Firefox on Linux system. Part 1 and 2 only config firefox, so it can also be used on other platform ... read more »

How to query installed files from a package and query which package one installed file is in will be introduced. Query installed files from a package $ rpm -ql package_name Query which package ... read more »

Please refer to Xen solution for the latest stable Xen Dom0 solution. ========================================== In this post, the detailed tutorial for setting up Xen 3.4.1 dom0 on top of Fedora 12 with kernel 2.6.29 ... read more »

The Linux Gnome style that I like is Shiki-color + Gnome colors icon theme. It looks pretty and professional and it is fast. The screen shots: How to install them: Gtk engine: # yum ... read more »

Twitter’s API is easy to use: curl -u username:password -d status="Tweeting msg" http://twitter.com/statuses/update.xml or curl -u username -d status="Tweeting msg" http://twitter.com/statuses/update.xml Then type in password. I have written a script twitter: #!/bin/bash username=USERNAME password=PASSWORD curl -u $username:$password -d status="$*" ... read more »

We can use sshfs to mount remote folder through SSH tunnel securely over network. Install sshfs $ sudo yum install sshfs Mount folder on sever to local folder sshfs username@server:/path/to/folder /path/to/mount/point Unmount it $ fusermount -u ... read more »

ffmpeg can do this well. It can grab X11 input and create an MPEG at specific fps with the specific resolution: ffmpeg -f x11grab -s 1280x1024  -r 25 -i :0.0 -sameq ... read more »

Guake is very fast while stable enough for using! It’s the excelent quqke like drop-down terminal for gnome. I used yakuake on KDE. It’s professional but a bit slow. I used ... read more »