2021-07-29 00:37:35 -07:00
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#!/usr/bin/env sh
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# YES_ZSH
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2021-08-23 04:52:23 -07:00
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# YES_BASH
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# YES_DASH
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# YES_ASH
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2021-07-29 00:37:35 -07:00
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2021-08-23 04:52:23 -07:00
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baknow() { ### @- backup files by appending their timestamps given by [`now`.](#now)
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2021-08-01 07:58:21 -07:00
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### ```
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### $ touch -d '2001-12-25 16:30:00' butts
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### $ baknow butts
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### $ baknow butts
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### cp: overwrite 'butts.2001-12-26_01800000.bak'? n
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### $ ls -l
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### total 0
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### -rw-r--r-- 1 notwa None 0 Dec 25 2001 butts
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### -rw-r--r-- 1 notwa None 0 Dec 25 2001 butts.2001-12-26_01800000.bak
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### ```
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2021-10-13 23:02:51 -07:00
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argc $# -ge 1 "$0" || return
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2022-03-06 13:12:17 -08:00
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local ret=0 f=
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2021-08-23 04:52:23 -07:00
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for f; do
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cp -ip "$f" "$f.$(now "$f").bak" || ret=1
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done
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return $ret
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2021-07-29 00:37:35 -07:00
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}
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2021-08-23 04:52:23 -07:00
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[ -n "${preload+-}" ] || . ~/sh/preload || exit 2
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eval ${preload:-preload} argc now
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2021-08-02 13:48:46 -07:00
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[ -n "${preload+-}" ] || baknow "$@"
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