1) You have a file called fruit.txt containing the following lines:
<br />
apple<br />
dragonfruit<br />
cantaloup<br />
apple<br />
banana<br />
sort will order the rows of the input in alphabetical order. Likewise uniq will eliminate duplicate rows from the input (but only when they are adjacent). Both commands send their output to stdout.
Which of the following sequence of commands will produce a file called sorted_fruit.txt containing a sorted list of the items in fruit.txt where each item only occurs once?
(a) uniq fruit.txt | sort > sorted_fruit.txt
(b) sort fruit.txt | uniq > sorted_fruit.txt
(c) uniq fruit.txt > sort
(d) sort fruit.txt | uniq
2) Which shell command will show you the documentation for any other shell command? What other ways are there to get help using the shell?