(That’s a lower-case-L following the GREP)

Quite powerful, and fairly fast. Now, if you have some spare time, and want to see what it can really do, try this:
su root
cd /
grep -lr “text to find” *
This will tell the OS to find the “text to find” in every file in every directory, all the way down through the tree. The -r flag tells grep to recursively search directories.

Of course, OS X has something like 6,000 files, so this can take a very long time!

wget -l2 -r -p -k -E http://www.example.com/

This can be overcome by the use of an internet proxy server or using a router with built in bandwidth throttling. If none of these option are available then I create some filters on my computers firewall which limit the bandwidth on my computer.

Advanced OS X users know that Darwin comes with ipfw, which can be used to set up a custom firewall. This same service however can be used to also limit bandwidth on specific ports.

Example:

sudo ipfw pipe 1 config bw 150KByte/s

creates a pipe that only allows up to 150KB/s to go through.

Then:

sudo ipfw add 1 pipe 1 src-port 80

will attach that pipe to the outgoing traffic on port 80, effectively limiting the outgoing traffic of the web server.

sudo ipfw delete 1

will remove the pipe from the port.

OR you try this nice little tool here
SpeedLimit.prefPane

http://www.amazon.com/kindlepublishing.

1. Download the KindleGen.zip to your PC in a location such as your home(~) directory.

2. Unzipitunder’~/KindleGen’.

3. Open a command prompt and type’ ~/KindleGen/kindlegen’.

4. You will see instructions on how to run KindleGen.

5. To convert a file called book.html, go to the directory where the book is

present, e.g., ‘cd Desktop’, and type ‘~/KindleGen/kindlegen book.html’; if successful, you will see a successful conversion and a new file on your Desktop called ‘book.mobi’.

Run the above commands without quotes.

In order to create Amazon Kindle files using KindleGen, you will need to have a single HTML file that represents the entire book, or you will need to provide IDPF spec 1.0 or 2.0 compliant files. You can look at the IDPF’s OPF spec here: http://www.idpf.org/doc_library/epub/OPF_2.0_latest.htm.

Using the IDPF spec, you can create a Kindle book with multiple HTML files and a single OPF file that links all of them together.

What is a Symbolic Link?
If you’ve ever made an “Alias” to a file in classic Mac OS, or a “Shortcut” to a file in Windows, you will easily be able to understand the UNIX equivalent (where “aliases” and “shortcuts” came from in the first place!), called a “Symbolic Link”. The easiest definition to understand is directly from the man page, “[A Link] is useful for maintaining multiple copies of a file in many places at once without using up storage for the ‘copies’; instead, a link ‘points’ to the original copy.” (If you want to read more about it, type man ln in the Terminal.)

I want to create a link to my installation of mysql installed with XAMP on osx

To create a link, simply type the following:
cd /
ln -s /Applications/XAMPP/xamppfiles/bin/mysql/ mysql
That’s it. ln -s makes a new file called mysql which points to /Applications/XAMPP/xamppfiles/bin/mysql/. To see that this worked, you can simply type
ls -la | more
(note the “|” character is called “pipe” and is found above the “Return” key). You should see a line with the following text:
mysql -> /Applications/XAMPP/xamppfiles/bin/mysql/
The arrow shows you exactly what you did… A file named mysql points to /Applications/XAMPP/xamppfiles/bin/mysql/.

To delete or remove a symbolic link type the following:

sudo unlink mysql

Thankfully, it was really easy to fix:

1. Turn the MacBook off
2. Wait
3. Turn the MacBook on

Sometimes you need to reset your PRAM to correct the issue. To do this, follow these instructions:

1. Cold Reboot your computer (turn it off, wait, turn it on)
2. As soon as it begins to power up, hold down the following keys at the same time:
   • Command
   • Option
   • P
   • R

If you open the PDF in Preview, you can reduce the file size by doing a “Save As…” and choosing, appropriately, Reduce File Size from the Quartz Filter menu. Often, that will be fine. But the way that it reduces the file size is by saving all images as JPEGs of middle quality. Sometimes that qualitywill not be enough.

How to create a compressed PDF with decent quality :
Open your existing PDF in preview, or Print any document using “Open PDF in Preview” from the PDF pop-up menu in the Print dialog
Choose Save As in the File Menu, then choose PDF as format, and one of the “Reduce to XXX dpi …” Quartz filters, and click Save.

Mac.prefPane
Internet.prefPane

I ran this command from the terminal

sudo rm -R -f /System/Library/PreferencePanes/MobileMe.prefPane

### = your username
- delete, move or rename ~ /Users/###/Library/Safari/History.plist
- start Safari again

If you want to stop safari from recording the address bar history then do the following:

Choose History: Clear History, and then quit Safari.

In your user folder, go to Library/Safari and locate the history.plist file.

Select the file, choose File: Get Info, and then click on the Locked option.

Now close the window.

When you relaunch Safari, autocompletion will still work as expected on bookmarks, and it will also work for URLs you visit in the current session.

But the next time you quit and restart Safari, the autocompletion data will vanish — it can’t be written to the locked .plist file.

To return to normal autocompletion, deselect the Locked option in the history.plist file’s Get Info dialog box.

Mac OSX 10.4 and below

lookupd -flushcache

Mac OSX 10.5 and above

However a Mac OSX 10.5 Leopard user will tell you this command will no longer work. In Mac OSX Leopard a new command has been used to replace flushcache. To clear DNS cache in Leopard, use the following command:

dscacheutil -flushcache