Crucial Exams

CompTIA Linux+ XK0-006 (V8) Practice Question

Consider the following Bash script, saved as configure.sh, which is executed with bash configure.sh from a shell where neither FOO nor BAR are currently defined:

#!/usr/bin/env bash
FOO=one

hello() {
  local FOO=two      # scoped only inside the function
  BAR=three          # ordinary shell variable
  export BAR         # mark BAR for export
}

hello
unset FOO            # remove the global FOO

echo "${FOO:-default}-${BAR}"

What output is produced when the script runs?

  • default-

  • default-three

  • one-three

  • two-three

CompTIA Linux+ XK0-006 (V8)
Automation, Orchestration, and Scripting
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