1. find lines in a file that contained the word "abracadabra"? 2. encode words in a file, by changing some letters to numbers: a -> 4 o -> 0 (oh to zero) I -> 1 e -> 3 z -> 2 s -> 5 3. print a file on the printer - what command would you use (it won't work on our computer, since it is in a county office, and can't connect to the printer in our lab)? 4. list only the third and fifth field of each line in a file, when the fields are separated by a pipe symbol ("|") 5. Try looking up the following accounts in /etc/passwd. Make sure you find only the account asked for, and no others. kwan kwan1 hale bryan isaacs (What command would you use to do this, and how would you use it?)

The volume v and paper surface area a of a conical paper cup are given by where r is the radius of the base of the cone and h is the height of the cone. a. by eliminating h, obtain the expression for a as a function of r and v. b. create a user-de ned function that accepts r as the only argument and computes a for a given value of v. declare v to be global within the function. c. for v ! 10 in.3 , use the function with the fminbnd function to compute the value of r that minimizes the area a. what is the corresponding value of the height h? investigate the sensitivity of the solution by plotting v versus r. how much can r vary about its optimal value before the area increases 10 percent above its minimum value?

Which is a possible benefit of having a good credit history? having a checking account low interest rate on a car loan high interest rate on a credit card offer bankruptcy

Which of the following calculates the total from the adjacent cell through the first nonnumeric cell by default, using the sum function in its formula? -average -autosum -counta -max