QuestionA user is reviewing a script and comes across the code in one of the lines as follows. What is the line doing? #until ping -c1 "$1" &>/dev/null A.Set a variable.B.Set a loop.C.Nothing is executing.D.Prevent from writing to the terminal.
Question
QuestionA user is reviewing a script and comes across the code in one of the lines as follows. What is the line doing? #until ping -c1 "$1" &>/dev/null A.Set a variable.B.Set a loop.C.Nothing is executing.D.Prevent from writing to the terminal.
Solution
The line of code is setting up a loop. This loop will continue until the "ping -c1 "$1"" command is successful. The "&>/dev/null" part is redirecting all output (both stdout and stderr) to /dev/null, which discards it. This is often done to suppress output from a command. So, the correct answer is B. Set a loop.
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