Bash: text processing and scripts

Quiz: scripts

Question 9 of 9

Several correct answers

With no arguments, count.sh runs `echo "Usage: count.sh DIR" >&2` and `exit 2`. What is true for a run with no arguments?

./count.sh > out.txt writes the usage line to out.txt.
./count.sh > out.txt leaves out.txt empty.
echo $? right after the run prints 2.
./count.sh 2> err.txt shows the usage line on the screen.

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