20 lines
364 B
Plaintext
20 lines
364 B
Plaintext
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#!/bin/sh
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value="$1"
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cmd="$( dirname $0 )/getvalpath"
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. "$( dirname $0 )/common"
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if [ ! "$value" ]; then
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echo "Usage: $0 VALUE" >&2
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exit 3
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fi
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valpath=$( $cmd $value )
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touch "$valpath"
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# follow value until parent process (likely the screen session) dies, which will
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# output the value each time it's updated
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tail -f "$valpath" --pid=$PPID 2>/dev/null
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