File Transfer Time/Speed Calculator

Use this calculator to estimate file upload, download or transfer speed.  Actual transfer speeds may be a bit slower than these times due to reasons described below in web page

http://www.t1shopper.com/tools/calculate/downloadcalculator.shtml

Create a file of a certain size in Windows XP and later

If you need to create a file of a certain size and the file contents don’t matter, you can use the Fsutil command as follows

fsutil file createnew <filename> <filesize in byte>

For example,

fsutil file createnew d:\temp\1mbfile.txt 1000000

creates a 1MB file named 1mbfile.txt in the d:\temp folder. I used this command to create files of different sizes to make some local network speed test

Show hidden files in Leopard finder

from Terminal, write

defaults write com.apple.Finder AppleShowAllFiles YES

to view hidden files and

defaults write com.apple.Finder AppleShowAllFiles NO

to let files to be hidden

Beware that viewing hidden files can confuse, as you will see A LOT of files and folders!!

Leopard screenshot shortcuts

Shift-Command-3: full-screen
Shift-Command-4: selective screenshot

with selective screenshot, a crosshair appears, with coordinates of start point, and then dimension of selected screen portion