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I would like to generate random numbers for "x" amount of time, but I'm not sure how to make it run for x amount of time (like 2 minutes for example).

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Bah, nvm.. I figured it out lol.. This is my solution

#!/bin/bash

# Generate random numbers for "X" amount of time.
TIMER='2m' # Default (2m) = 2 minutes
timeout -sHUP ${TIMER} bash -c 'while [ 0 ]; do echo "${RANDOM}"; done'
1

Alternatively:

while true; do echo "$RANDOM"; done & sleep 2m; kill %1

It's a little bet less typing, and supports any time parameter that your local version of sleep supports.

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