वर्तनी की दृष्टि से

Which command is used to display the contents of a file in Linux?

How do you check the exit status of the last executed command in a shell?

What does #!/bin/bash at the start of a script mean?

Which character is used to denote a single-line comment in a shell script?

Which command is used to combine the contents of multiple files?

Which command displays the manual page for another command?

Which of the following is the syntax for an `if` statement checking if a variable `NUM` is numerically equal to 5?

Which command safely iterates over filenames that may contain spaces and newlines in a shell script?

How do you access the value of a variable named `USERNAME` in a shell script?

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