State the output (or behavior) of each of the following commands. 3.1. i. ii. iii. iv. echo echo hello world echo 'echo hello world' echo "echo hello $world" echo 'echo hello world echo (echo hello world) V. 3.2. i. ii. iii. echo 'hello world' | echo 'hello world' > echo 'hello world' 2> cat cat cat 3.3. i. ii. iii. echo a && echo a ; echo a & echo b echo b echo b There is a file 'members.txt'. Assume it is in the following form: Name: John NetId: j22 email: john@nyu.edu Name: Amy NetId: a123 email: amy@nyu.edu Try to use a pipeline (a shell command that uses a pipe) for each of the following tasks: To output the first 100 names in this file. (Hint: you may want to compose the following commands: grep "Name:[a-zA- Z']\+$", head -n100, cut -d':' -f 2) To identify the first 100 names by alphabetical order, and then (in one command) output them (as above) and write them to a file called 'names.txt'. (Hint: you may want to use: sort, tee names.txt.)