17 lines
335 B
Bash
17 lines
335 B
Bash
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#!/bin/bash
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RETRY=0
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while [ $RETRY -lt 5 ]; do
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let RETRY=$RETRY+1
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/bin/systemctl --quiet is-active serial-getty@ttyS1.service
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status=$?
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if [ $status == 0 ]; then
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exit 0
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fi
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# when serial-getty not running, recheck later, beause systemd will restart serial-getty automatically.
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sleep 1
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done
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exit 1
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