preload
十一月 12

Action

apt-get command

aptitude command

Install foo

apt-get install foo

aptitude install foo

Search foo

apt-cache search foo

aptitude search foo

Remove foo

apt-get remove foo

aptitude remove foo

List reverse dependencies

apt-cache rdepends foo

aptitude ~D foo

Print information on priorities for foo

apt-cache policy foo

?

Download foo’s sources and build a binary .deb package

apt-get source –compile foo

?

How to upgrade your distribution
Find out current version of Debian that you are running:

cat /etc/debian_version

Example for upgrading sarge to etch or etch 4.0r1 to 4.0r2 …etc

aptitude update
aptitude dist-upgrade

來源:Aptitude – Debian Wiki

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十一月 12

因為用 Leopard 內建的 Python 在互動模式下中文有問題
所以來用 MacPorts 裝 Python 2.6,裝好之後出現
To fully complete your installation and make python 2.6 the default, please run

sudo port install python_select
sudo python_select python26

python_select:Switch the default python interpreter


指令照打沒效=.=

還是自己作連結比較保險

cd /usr/bin/
sudo ln -s /opt/local/bin/python python
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十一月 05
  • 頁尾插入「第 頁,共 頁」
  • Ctrl+F9,插入代碼:{page}、{numpages}
    • {page}該頁數
    • {numpages}總頁數
  • Alt+F9,更新代碼
  • 完成
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十一月 05

tchinese.py

#!/bin/python
print "Python是個酷玩意"
python tchinese.py
SyntaxError: Non-ASCII character '\xe6' in file tchinese.py on line 2, but no encoding declared; see http://www.python.org/peps/pep-0263.html for details

錯誤訊息中的連結到這篇文章:PEP 0263 — Defining Python Source Code Encodings
文中提到:

To define a source code encoding, a magic comment must be placed into the source files either as first or second line in the file, such as:

# coding=<encoding name>

or (using formats recognized by popular editors)

#!/usr/bin/python
# -*- coding: <encoding name> -*-

or

#!/usr/bin/python
# vim: set fileencoding=<encoding name> :

Example:

#!/bin/python
# -*- coding: utf-8 -*-
print "Python是個酷玩意"

Result:

Python是個酷玩意
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十一月 03

-h  ”Human-readable” output. Use unit suffixes: Byte, Kilobyte, Megabyte, Gigabyte, Terabyte and Petabyte.
-s  Display an entry for each specified file. (Equivalent to -d 0)
-d  depth
   Display an entry for all files and directories depth directories deep.


只列出目錄大小:

du -sh ~/Documents/EyeTV\ Archive/

3.2G /Users/name/Documents/EyeTV Archive/


列出目錄裡該層所有檔案大小:

du -sh ~/Documents/EyeTV\ Archive/*

4.0K /Users/name/Documents/EyeTV Archive/EyeTV Archive.xml
4.0K /Users/name/Documents/EyeTV Archive/EyeTVAutoTune.log
3.2G /Users/name/Documents/EyeTV Archive/熱帶魚 – 單元集單元劇.eyetv
25M /Users/name/Documents/EyeTV Archive/伊索動物劇場 – 第17集偶戲動畫卡通獅子和山豬.eyetv

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十一月 02

PHP 檔案處理

讀檔:

1.fopen

範例:

<?php
$handle = fopen("open_file.txt", "r");
if( $handle === FALSE)
{    
    echo "Open File Fail" . "<br>";
} 
else
{    
    echo "Open File Success" . "<br>";
    while (!feof($handle))
    {
        $current_line = fgets($handle);
        echo $current_line . "<br>";
    }
}
 
?>

2.file_get_contents

範例:

<?php
 
$handle = file_get_contents('open_file.txt');
echo $handle;
 
?>

=========================================================

寫檔:

1.fwrite

<?php
$handle = fopen('open_file.txt', 'w');
fwrite($handle, "test1");
fclose($fp);
?>

ps:fwrite 是沒有加換行字元,如果要換行必須加上 \n 處理

2.file_put_contents

<?php
    $handle = 'open_file.txt';
    $current_line = "line1\n";
    file_put_contents($handle, $current_line);
?>

source: PHP:檔案處理 @ 拉不拉多的夢幻世界 :: 痞客邦 PIXNET ::

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十月 26

方便的自動安裝

perl -MCPAN -e 'install full::module::name'

但我試了幾次很容易會在 fetch ftp 來源的 source code 時卡住,要重試幾次。

手動編譯

tar xzvf example-<version>.tgz
cd example-<version>
perl Makefile.PL
make
make test
make install

搜尋WP::UserAgent模組

cpan> d /LWP::UserAgent/

重新配置cpan

cpan> o conf init
cpan> reload index

 
驗證安裝了沒

perl -e 'require LWP::UserAgent'

update: 有時候,還是需要加個 sudo 確保有權限將檔案放入系統

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