#!/usr/bin/env sh
# YES_ZSH
# YES_BASH
# YES_DASH
# YES_ASH

dated() {
    local u=0
    [ "$1" != -u ] || { shift; u=1; }
    argc $# -le 1 "$0" || return
    if [ $# = 0 ]; then
        # -u doesn't actually do anything here, but...
        if [ $u = 1 ]; then date -u '+%s'; else date '+%s'; fi
    else
        if [ $u = 1 ]; then date -u -d '@'"$1"; else date -d '@'"$1"; fi
    fi
}

[ -n "${preload+-}" ] || . ~/sh/preload || exit 2
eval ${preload:-preload} argc
[ -n "${preload+-}" ] || dated "$@"