Show and Hidden Files on Mac OS X

Mac OS X 10.8.5
I often edit. htacces, but when downloading or create files. htacces, the files hidden by Mac OS X, I’m currently using OSX 10.8.5. In Mac OS X, files with names that start with a dot (.) are hidden

I’m using Terminal command to reveal the hidden files in OS X  by making a change to the default behavior of Finder. Open Terminal app in Utilities folder (Go > Utilities), type following command :

defaults write com.apple.Finder AppleShowAllFiles TRUE

Press return, type following command to restart Finder

killall Finder

Press return and we could see hidden files.

I’m usually hide these files again because I don’t want hidden files clutter up Finder windows/desktop with extraneous items. Open Terminal app in Utilities folder (Go > Utilities), type following command :

defaults write com.apple.Finder AppleShowAllFiles FALSE

Press return, type following command to restart Finder

killall Finder

I had new domain alias setup in Google Apps before I encountered this error when was trying to send email to new domain alias

550-Please turn on SMTP Authentication in your mail client, or login to the
550-IMAP/POP3 server before sending your message

The error happened because DNS propagation, wait for 24 hours for server to resolve.