Display output from last command in bash until loop

Question

until commandThatProducesOutput | grep -m 1 "Done"
do
        ???
        sleep 5
done

While this script is running, I'd like to pipe the output that commandThatProducesOutput produces to the screen but can't seem to get the correct syntax.

Seems like command ... | tee /dev/tty | grep ... should do what you want. See how-to-pipe-stdout-while-keeping-it-on-screen-and-not-to-a-output-file. — John B
– John B, Commented Oct 3, 2014 at 22:20

Vivek Ghaisas · Accepted Answer · 2014-10-03 23:00:07Z

1

How about:

output=$(commandThatProducesOutput)

until echo "$output" | grep -m 1 "Done"
do
    echo "$output"
    output=$(commandThatProducesOutput)
done

edited Oct 3, 2014 at 23:00

answered Oct 3, 2014 at 22:07

Vivek Ghaisas

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1 Comment

rici Over a year ago

echo "$output", please.

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