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→LINUX PRACTICE QUESTIONS
3. <span style="font-family:courier;font-weight:bold">grep "^[+-]?[0-9]" ~murray.saul/uli101/numbers.txt</span><br> (Why?)
6. <span style="font-family:courier;font-weight:bold">6. egrep "^[+-]?[0-9]+[.]?[0-9]+$" ~murray.saul/uli101/numbers.txt</span>