44 lines
1.2 KiB
Bash
Executable File
44 lines
1.2 KiB
Bash
Executable File
#!/usr/bin/env sh
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#
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# timestamp: print current date-time(stamp)
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# author: Dylan Lom <djl@dylanlom.com>
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#
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# Copyright (C) 2021 Dylan Lom <djl@dylanlom.com>
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#
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# Permission to use, copy, modify, and/or distribute this software for any purpose
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# with or without fee is hereby granted.
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#
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# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
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# REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
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# FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
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# INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
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# OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
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# TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF
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# THIS SOFTWARE.
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#
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# flags:
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# -d date only.
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# -r rfc3339 without a colon in offset.
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# -R rfc3339
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# -v verbose human readable.
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# -h display help
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# * human readable.
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argv0="$0"
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usage() {
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echo "USAGE: $argv0 [-d|-r|-R|-v|-h]" > /dev/stderr
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exit 1
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}
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case "$1" in
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'-h') usage ;;
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'-d') fmt='%Y-%m-%d';;
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'-r') fmt='%Y-%m-%dT%T%z' ;;
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'-R') fmt='%Y-%m-%dT%T%:z' ;;
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'-v') fmt='%Y-%m-%d %T %Z';;
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*) fmt='%Y-%m-%d %H:%M';;
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esac
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date "+$fmt"
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