Emulating a do-while loop in Bash

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Two simple solutions:

  1. Execute your code once before the while loop

    actions() {
   check_if_file_present
   # Do other stuff
}

actions #1st execution
while [ current_time <= $cutoff ]; do
   actions # Loop execution
done

  2. Or:

    while : ; do
    actions
    [[ current_time <= $cutoff ]] || break
done

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