Check before you act

Goal

Your script is started with one argument, a path, like sh answer.sh testdata/report.txt. Print found: PATH when that path is an existing file, and missing: PATH when it is not.

Example

If testdata/report.txt exists, then sh answer.sh testdata/report.txt prints:

found: testdata/report.txt

If testdata/nothing.txt does not exist, then sh answer.sh testdata/nothing.txt prints:

missing: testdata/nothing.txt

In both cases PATH is the argument exactly as it was given, including any spaces.

Rules

• Edit answer.sh. The path is the first argument, $1.
• Use an if with the -f test inside [ ], and an else for the other case.
• Print exactly one line, using printf: found: or missing: followed directly by the path.
• Put double quotes around $1 everywhere you use it. A path like testdata/my notes.txt contains a space and must stay in one piece. The test creates that file for you when it runs.
• The brackets need a space after [ and before ].
• A folder is not a file. If the path names a folder, print missing: PATH. The -f test already behaves this way.
• Do not print anything else, not even a blank line.

What you'll practice

if, else, fi, the -f test inside [ ], $1, and quoting.

Run it

gonomicon fetch week-1/04-03-shell-conditions-and-tests
cd 04-03-shell-conditions-and-tests
gonomicon test
gonomicon submit

Hints

1. The -f test succeeds when a path is a regular file. It goes inside brackets with spaces around everything: [ -f "$1" ].
2. Use if [ -f "$1" ]; then ... else ... fi. Keep the double quotes around $1 so a path with spaces stays one item.
3. if [ -f "$1" ]; then printf 'found: %s\n' "$1"; else printf 'missing: %s\n' "$1"; fi, written across several lines.