How to export your X Display. It is possible to use your computer at home or in the labs to login to the CS machines and use cool graphical tools like xclock. The system that makes this possible is the X Windows System (X), it is the basis for all GUI application on the CS machines.
A credit monitoring service may be offered by your credit card company or bank. This service will send you an email alert or call you to notify you of any unusual charges to your credit account or credit report. Contact your credit card company or bank and ask to sign up for account protection. Show Comments.
Finding or Verifying Credit Card Numbers. With a few simple regular expressions, you can easily verify whether your customer entered a valid credit card number on your order form. You can even determine the type of credit card being used. Each card issuer has its own range of card numbers, identified by the first 4 digits. You can use a slightly different regular expression to find credit card numbers, or number sequences that might be credit card numbers, within larger documents.