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54 lines
1.0 KiB
Bash
Executable File
54 lines
1.0 KiB
Bash
Executable File
#!/bin/bash
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# Copyright (c) 2016 The CoreOS Authors. All rights reserved.
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# Use of this source code is governed by a BSD-style license that can be
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# found in the LICENSE file.
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SCRIPT_ROOT=$(dirname $(readlink -f "$0"))
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. "${SCRIPT_ROOT}/common.sh" || exit 1
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USAGE="USAGE: $0 [-v] [date flags]
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This script calculates the date given the CoreOS major version or calculates
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the version given a date.
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Examples:
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$0 -v 1000
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Sun Mar 27 00:00:00 UTC 2016
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$0 -v 1000 --iso-8601
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2016-03-27
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$0 --date 'Jun 1, 2016'
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1066
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"
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case "$1" in
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"-h")
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echo "$USAGE"
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;;
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"-v")
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shift
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if [[ $# -ge 1 ]] && [[ "$1" != [-+]* ]]; then
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v="$1"
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shift
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else
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v="${FLATCAR_VERSION}"
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fi
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# strip of a v prefix or .0.0 suffix
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v="${v#v}"
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v="${v%%.*}"
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export TZ=${TZ:=UTC}
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date -d @$(( (v * 86400) + COREOS_EPOCH )) "$@"
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;;
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*)
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t=$(date +%s "$@")
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echo $(( (t - COREOS_EPOCH) / 86400 ))
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;;
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esac
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