Bash Intermediate Quiz 1

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Quiz 1
1. Which operator redirects standard output and standard error together?
2. What command exits immediately on a non-zero status?
3. What parameter expansion provides a default value for unset variables?
4. Which syntax creates an array in Bash?
5. What syntax accesses the total element count of an array?
6. What does double-parentheses notation perform?
7. Which command is used to send signals to processes?
8. How do you redirect standard error into standard output?
9. What keyword terminates a case statement?
10. What is the purpose of the trap command?
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