Developing HTML email newsletter and problem with images cache? If you are getting an html email with images and that image file is changed on the server mail is not updating the image. It is obviously looking to a cache file then going back to the server to pull the new image.

Easy way to force Apple Mail to reload all images from server

1. Close Mail
2. In terminal: rm ~/Library/Caches/com.apple.mail/Cache.db
3. Open Mail, all images will be refreshed

Other way to fix mail cache

You could download OnyX to clear all apps cache and also tune up other aspects of the MacOSX.

Refreshing Apple Mail images is a post from: My MacOS X

To uninstall developer tools/Xcode type in the following command in the terminal

sudo /Developer/Library/uninstall-devtools –mode=all

The system will ask you root password and process will take about 5 mins.

But beware, this completely removes Xcode and once it is gone, it’s gone. Of-course you can always reinstall it. So be sure of what you are doing.

My experience was 8GB from macbook pro.

Note: You can find Terminal in you Mac by going to Applications >> Utilities. (no need to uninstall XCode for that!)

How To Uninstalling Xcode in Snow Leopard is a post from: My MacOS X

So you’re a designer or a developer and you daily need to deal with code and text snippets: that’s very likely to happen. From CSS to HTML, from Javascript to Ruby, you just can’t remember every piece of code everyday: you need a good solution to store and easily retrieve them.

Snippet is a way for developers to quickly save and search their snippets of code to use later on future projects. Store all sorts of code and notes, and sync across multiple macs with MobileMe.

Features:

• Easily create Snippets from selected text anywhere.
• Sync Snippet with MobileMe so you always have your snippets.
• Creating new snippets only takes seconds.
• Search your snippets instantly with a few keystrokes.
• Never have to leave the keyboard.

Price: Free to try (15-day trial); $12.95 to buy

Snippet your code and notes is a post from: My MacOS X

The MacPorts Project

To install the software, first install Apple’s Xcode Developer Tools (available on your Mac OS X installation disc) and the X11 windowing environment (included by default in 10.6.* “Snow Leopard”, 10.5.* “Leopard”, but available on your Mac OS X installation discs for 10.4.* “Tiger” and 10.3.* “Panther”), then download the MacPorts DMG (disk image), mount the disk image and run the installation package.

After the installation has completed, reopen any Terminal windows to reload PATH settings updated by the installation, then run the following command to update the MacPorts software:

Detailed usage instructions can be found in the MacPorts Guide, but the basic commands are:

Install a package:

Uninstall a package:

Delete intermediate files created while a port was built:

List all installed packages:

List all packages available:

Search all packages available:

MacPorts | Compile and install Linux commands is a post from: My MacOS X

This can go in your .vimrc or in a global location such as /usr/share/vim/vimrc.
I would be interested in what other command line and vim users do to improve Snow Leopard.

step 1. Add following code to /usr/share/vim/vimrc

set nocompatible " Use Vim defaults
set bs=2 " backspacing over everything in insert mode
set ai " Auto indenting
set history=100 " keep 100 lines of history
set ruler " show the cursor position

set viminfo='20,\"200 " keep a .viminfo file

syntax on " syntax highlighting
set hlsearch " highlight the last searched term

filetype plugin on " use the file type plugins

" When editing a file, always jump to the last cursor position
autocmd BufReadPost *
\ if ! exists("g:leave_my_cursor_position_alone") |
\ if line("'\"") > 0 && line ("'\"") <= line("$") |
\ exe "normal g'\"" |
\ endif |
\ endif

step 2. Make alias vi = vim

open ~/.bash_profile and add following code

alias vi=vim

VIM: Making it Work on Leopard is a post from: My MacOS X

The following ipfw rules will limit connections from Mac to ISP’s mail server to 100K per second only for outgoing smtp connections:

sudo ipfw pipe 1 config bw 100Kbit/s
sudo ipfw pipe 1 tcp from me to smtp.west.cox.net 25

Obviously, the rate can be tailored to anything you like, and the rule is specific enough not to get in the way of any other connections going on.
to remove the pipe from the port

sudo ipfw delete 1

Another example could be for webdevelopers

You should see how long it takes modern sites to load on 56k…

Create a pipe that only allows up to 15KB/s

sudo ipfw pipe 1 config bw 15KByte/s

Attach that pipe to the outgoing traffic on port 80

sudo ipfw add 1 pipe 1 src-port 80

Delete the pipe when finished

sudo ipfw delete 1

Bandwidth Throttling is a post from: My MacOS X

Tidy Service is a OS X Service that cleans up markup using the powerful HTML Tidy library originally created by  Dave Raggett. The version of HTML Tidy used in this build corresponds to the binary version released on February 11th, 2007.

HOW DO INSTALL IT?

1. Download Tidy Service
2. Copy TidyService.service file to /Users/<your home directory>/Library/Services/
   Note: You may need to create the directory “Services” if it does not already exist.
3. Logout and then login  again (or restart systyem).
   Note: Tidy Sevice will not appear in the Services menu until you logout, then login
4. Create settings for TidyService.
   create /Users/<your home directory>/TidyService.conf
   and insert following settings to TidyService.conf

   indent: yes
   indent-spaces: 4
   wrap: 72
   markup: yes
   output-xml: no
   input-xml: no
   show-warnings: no
   numeric-entities: no
   quote-marks: yes
   quote-nbsp: yes
   quote-ampersand: no
   break-before-br: no
   uppercase-tags: no
   uppercase-attributes: no
   doctype: omit
   show-body-only: yes
   output-html: yes
   tidy-mark: no
   

   A detailed listing of options can be found at http://tidy.sourceforge.net/docs/quickref.html

5. Set a shortcut to easy access to Tidy Service. Open Leopard -> System Preferences -> Keyboard -> Keyboard Shortcuts. Select Services in left box and set find “Tidy Markup” in list.
   

HOW TO USE

Tidy Service can be used to clean up HTML markup in any application that supports services by selecting (Coda, SubEthaEdit, Tumult HyperEdit, or TextWrangler) the markup in question and choosing one of the Tidy menu items from the Services menu.

Currently, there are two processing options: Tidy Markup and Tidy to XHTML. Tidy to XHTML instructs the Tidy engine to  generate valid XHTML, while Tidy Markup does not.

Valid HTML and Apply Source Formatting is a post from: My MacOS X