38 lines
1.0 KiB
Bash
Executable File
38 lines
1.0 KiB
Bash
Executable File
#!/bin/sh
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# Note that there is no provision to prevent several copies of the script
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# to be run in quick succession. In fact, it happens rather often
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# if initial syncronization results in a step.
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# You will see "step" and then "stratum" script runs, sometimes
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# as close as only 0.002 seconds apart.
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#
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# Script should be ready to deal with this.
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dt=`date '+%Y-%m-%d %H:%M:%S'`
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if test x"$stratum" != x"" \
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&& test x"$poll_interval" != x"" \
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&& test 4 -ge "$stratum" \
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&& test 128 -le "$poll_interval" \
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; then
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echo "`tail -n 199 -- "$0.log" 2>/dev/null`" >"$0.log.$$"
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echo "$dt: $1"\
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"freq_drift_ppm=$freq_drift_ppm"\
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"offset=$offset"\
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"stratum=$stratum"\
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"poll_interval=$poll_interval,"\
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"setting hardware clock"\
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>>"$0.log.$$"
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mv -- "$0.log.$$" "$0.log"
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exec hwclock --systohc
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fi
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echo "`tail -n 199 -- "$0.log" 2>/dev/null`" >"$0.log.$$"
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echo "$dt: $1"\
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"freq_drift_ppm=$freq_drift_ppm"\
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"offset=$offset"\
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"stratum=$stratum"\
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"poll_interval=$poll_interval"\
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>>"$0.log.$$"
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mv -- "$0.log.$$" "$0.log"
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