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#!/bin/bash
 s='dimensions:    2560x1600 pixels (676x423 millimeters)'
 echo $s | sed -E 's/.*\(([0-9]+x[0-9]+).*/\1/'

Success #stdin #stdout 0s 19632KB

stdin

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Standard input is empty

stdout

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676x423

https://ideone.com/BbjWXz

language:

Bash (bash 5.0.3)

created:

visibility:

public

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