Planet of NCCUCS

Tag: Linux

debain / ubuntu rubygems problem

作者:Dlackty on 三月.03, 2009 Posted in RSS |

這個問題也是我今天踩了一整天的地雷,從debian一路踩到Ubuntu,後來終於發現問題之所在。

測試平台:
debian 5.0 lenny / ubuntu 8.10 server

問題簡述:
在debain或是Ubuntu下執行apt-...

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在linux環境下如何掛載與卸載光碟機

作者:Anderson on 二月.06, 2009 Posted in RSS |

目前較新的版本已經可以自動掛載了,不過手動掛載指令如下
#先建立掛載目錄# mkdir /mnt/cdrom
#掛載光碟# mount -t iso9600 /dev/cdrom /mnt/cdrom
#卸載光碟# umount /dev/cdrom

#先建立掛載...

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如何傳遞signal @@

作者:Anderson on 十月.24, 2008 Posted in RSS |

還不太能講清楚說明白的東西 @@先暫存一下 持續補筆記
GTK透過GDK來處理事件,GDK會將每個接受到的XEvent轉換為GdkEvent,然後傳播給GtkWidget,引發一個與事件相對應的事件Signal,再透過Call...

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什麼是gpio ?

作者:Anderson on 十月.21, 2008 Posted in RSS |

wiki : gpio
General (GPIO) is a acronym of General Purpose Input/Output.
A microprocessor, microcontroller or interface device may have one or more GPIO connections, to interface with the outside world.
//中文介紹有點拗口,...

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什麼是memory mapping ? 談 mmap

作者:Anderson on 十月.21, 2008 Posted in RSS |

wiki : mmap
In computing, mmap is a POSIX-compliant Unix system call that maps files or devices into memory. It is a method of memory-mapped file I/O. It naturally implements demand paging, because initially file contents are not entirely read f...

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什麼是 ioctl (Input/output control) ?

作者:Anderson on 十月.19, 2008 Posted in RSS |

wiki : ioctl
ioctls are typically employed to allow userspace code to communicate with hardware devices or kernel components.
ioctl是應用程式用來和驅動程式溝通的function,讓應用程式可以對某個裝置下命令在unix...

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Ubuntu 8.10倒數!

作者:Peachwa & Neversay on 十月.19, 2008 Posted in RSS |

終於,等待了許久的Ubuntu 8.10終於要釋出了,這版本的Ubuntu主要改進許多桌面應用的地方,下載點有:Asiahttp://ftp.jaist.ac.jp/pub/Linux/ubuntu-releases/ (Japan)http://debian.nctu.edu.tw/ubuntu-releases/ (Taiwan)ftp:/...

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什麼是 i2c (Inter - Integrated Circuit) ?

作者:Anderson on 十月.19, 2008 Posted in RSS |

wiki : i2c
I²C (Inter - Integrated Circuit)是內部整合電路的稱呼,是一種串列通訊匯流排,使用多主從架構,由飛利浦公司在1980年代為了讓主機板、嵌入式系統或手機用以連接低速週邊裝置而...

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簡單介紹 GNU Debugger (GDB)

作者:Anderson on 十月.19, 2008 Posted in RSS |

wiki : gdb
GNU 除錯器(GNU Debugger,縮寫:GDB),它是GNU 軟體系統中的標準除錯器,此外GDB也是個具有移攜性的除錯器,經過移攜需求的調修與重新編譯,如今許多的類UNIX作業系統上都可以...

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What is V4L(Video4Linux) ?

作者:Anderson on 十月.17, 2008 Posted in RSS |

wiki : Video4LinuxVideo4Linux or V4L is a video capture API for Linux.
about v4l + v4l2

v4l
is the original video capture/overlay API of the linux kernel. It appeared late the 2.1.x development cycle in the linux kernel.

v4...

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