Repeat a task for each item

Goal

Your script is started with some words as arguments, like sh answer.sh red "blue green". Print each argument on its own line as item: WORD, then print each line of testdata/notes.txt as line: TEXT.

Example

Started as sh answer.sh red "blue green", with a testdata/notes.txt that holds:

first note
second  note

the script prints:

item: red
item: blue green
line: first note
line: second  note

"blue green" is one argument, so it gets one item: line. A line from the file keeps its own spaces, including two spaces in a row.

Rules

• Edit answer.sh. It gets the words as arguments and reads the file testdata/notes.txt.
• Print the item: lines first, in the order the words were given, then the line: lines in file order.
• Use a for loop over "$@" for the words. Keep the double quotes so a word with spaces stays in one piece.
• Use a while loop with IFS= read -r line for the file, and feed it with < testdata/notes.txt after done.
• Print with printf, using %s for the word or line.
• If no words are given, print no item: lines. If the file is empty, print no line: lines. Both can happen at once, and then your script prints nothing at all.
• A blank line in the file prints line: with nothing after it.
• Every line in the file ends with a newline. Do not edit testdata/notes.txt; your script only prints.
• Do not type the sample words or sample lines into the script. The test uses different ones.

What you'll practice

for loops over "$@", while with read, IFS= and -r, redirecting a file into a loop, and printf with %s.

Run it

gonomicon fetch week-1/04-04-shell-for-and-while-loops
cd 04-04-shell-for-and-while-loops
gonomicon test
gonomicon submit

Hints

1. You need two loops, one after the other. A for loop goes over "$@" (the arguments). A while loop reads the file.
2. For the file, use while IFS= read -r line; do ... done < testdata/notes.txt. The < file goes after done. IFS= and -r keep the line exactly as written.
3. for word in "$@"; do printf 'item: %s\n' "$word"; done, then while IFS= read -r line; do printf 'line: %s\n' "$line"; done < testdata/notes.txt, written across several lines.