Question

30

Store output of command into the array

rated 0 times [ 30] [ 0] / answers: 1 / hits: 131056 / 3 Years ago, tue, may 4, 2021, 4:35:01

This is command: pdc status -a 2>&1 | grep 'okay' It gives the following output

[okay     ]: you are currently listening: 33

[okay     ]: you are currently listening: 22

[okay     ]: you are currently listening: 11

I have written this command in shell scrip file. But I want to store the output of this command into the array for some processing on each of the index value in the array.

How can I store the output of this command into the array?

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iething

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2 Years ago

answered 3 Years ago tialmes · Accepted Answer

If you just want the numbers at the end of each line:

numbers=( $(pdc ... | grep -oP 'okay.+?Kd+$') )

If you want to store each line into the array

mapfile -t lines < <(pdc ...)

To retrieve the data from the arrays:

for (( i=0; i<${#numbers[@]}; i++ )); do echo ${numbers[i]}; done

echo

printf "%s

" "${lines[@]}"

33

22

11



[okay   ]: you are currently listening: 33

[okay   ]: you are currently listening: 22

[okay   ]: you are currently listening: 11