You might find your old PC data to have tons of random Locked files and folders in Mac OS X. Terminal comes to the rescue with chflags command that will help us unlock the file/folder by removing the locks in masses.

Since I have converted from PC to Mac I have missed the function in Windows that automatically locks the computer and prompt you back to the account login screen. There are various ways to do this on your Mac, however my requirements were the following:
1. Automatically lock the computer via idle time.
2. Prompt Fast user [...]