The diagnostic test automatically executed when a

What does $# represent in a shell script?

If a program needs to read data from a file, which system call would it typically use?

Which operator enables process substitution?

In bash, what does trap 'echo Exit' EXIT do?

Which symbol is used to comment a single line in shell scripts?

Which symbol is used in shell scripting to reference a positional parameter, e.g., the first argument passed to a script?

Which signal is sent by default when using kill without arguments?

Which operator is used for string equality comparison within `test` or `[` commands in shell scripting?

How can you pass command-line arguments to a shell script?

Which construct allows embedding a block of text in shell scripts as input?