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The last day to take the Final Exam is 5/02/25.  I understand that I have an entire week to schedule and complete this exam.  If I wait until the day of the due date, I am putting myself at risk of technical difficulties impeding my completion of this exam.  I know that I should take this exam a couple of days before the due date to ensure completion of the exam.  Please mark this date in your calendar. There are no extensions or retakes for this exam.  

Write the command to sort a file called file1 in descending order and save the result in the same file name (in one command).

Display all lines that end with the word test in the file called file1. 

Display all lines that start with uppercase letters in the file called file1.

You would like to list only files that have 4 or 5 or 6 in the last character of their names. Write the command.

Write a shell script to ask the user to enter a name and append the name to a file called file1. Ask the user to continue or not. If the answer is yes, the same process must repeat.

Write the command to sort a file and then show the first two lines of the file (in one command).

What is the idea behind regular expressions? 

312 x 9 (Do not use a comma when you type your answer.) _______

28÷4 _______