Knut Ahlers
b7c7bab313
by not waiting for the whole time at once but sleeping in chunks which then would wake up the device even when it slept most of the time-diff Signed-off-by: Knut Ahlers <knut@ahlers.me>
20 lines
532 B
Bash
Executable file
20 lines
532 B
Bash
Executable file
#!/bin/bash
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set -euo pipefail
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default_sleep=10
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source ${HOME}/bin/script_framework.sh
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time=${1:-}
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[ -z "${time}" ] && fail "No time specified"
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tdiff=$(($(date -d "$1" +%s) - $(date +%s)))
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[ $tdiff -gt 0 ] || tdiff=$((tdiff + 86400))
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ttime=$(date -d "now + ${tdiff} seconds" +%s)
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step "Sleeping ${tdiff}s until $(date -d "now + ${tdiff} seconds" "+%Y-%m-%d %H:%M:%S")..."
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while [ $(date +%s) -lt $ttime ]; do
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tremain=$(( ttime - $(date +%s) ))
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[ $tremain -gt $default_sleep ] && sleep $default_sleep || sleep $tremain
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done
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