Multiple choice technology

Command to rescan the line by the shell

  1. echo

  2. export

  3. eval

  4. exec
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

eval forces the shell to rescan and reparse its arguments, effectively executing the command twice. This allows for dynamic command construction and variable indirection. echo only prints, export sets environment variables, exec replaces the shell process.

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