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Compute coreos version for a date or the date of a coreos version. Arguments are passed to `date` except for `-v` which takes an optional version value and converts it to a date. `-v` must be the first arg. $ ./core_date 945 $ ./core_date -d wed 947 $ ./core_date -v Fri Jan 29 00:00:00 UTC 2016 $ ./core_date -v +%D 01/29/16 $ ./core_date -v 1000 Sun Mar 27 00:00:00 UTC 2016 $ ./core_date -v 1000 +%D 03/27/16
29 lines
651 B
Bash
Executable File
29 lines
651 B
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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if [[ "$1" == "-v" ]]; then
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shift
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if [[ $# -ge 1 ]] && [[ "$1" != [-+]* ]]; then
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v="$1"
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shift
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else
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v="${COREOS_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 )) "$@"
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else
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t=$(date +%s "$@")
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echo $(( (t - COREOS_EPOCH) / 86400 ))
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fi
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