Unix/Linux

Part 1. Self Test 1 from the textbook. 1) What is the effect of each of the following commands? A) sort filel file B) WC filel file2 C) grep filel file D) who I sort > abc E) cat filel file2 file3 2) What command results in a reverse sorting of all lines in the /etc/passwd file that contain a zero somewhere on the line? 3) What would be in the file filel in each of the following? A) echo filel >> filel B) cat filel 4) How can you access virtual terminal 3? 5) What command reads its arguments and writes them to output