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Subject: Re: best way to convert UTC to local time?
From: =?iso-8859-1?Q?Lawrence_Vel=E1zquez?= <larryv@macports.org>
In-Reply-To: <83808ECC-34C4-42F6-B47B-70F26A6C03BD@gmail.com>
Date: Tue, 11 Jun 2013 22:01:23 -0400
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References: <83808ECC-34C4-42F6-B47B-70F26A6C03BD@gmail.com>
To: TJ Luoma <luomat@gmail.com>
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On Jun 11, 2013, at 5:51 PM, TJ Luoma <luomat@gmail.com> wrote:

> This works, but three separate `strftime` calls seems inefficient. I =
mean, it's not like it takes a long time to run or anything, I'm just =
wondering if there's a "better" way.

Well, if you're willing to use an external command, you could go with =
date(1):

    for F in "$@"; do
        [[ -f "$F" && -r "$F"]] || continue
        DATE_ADDED_UTC=3D$(mdls -raw -name kMDItemDateAdded "$F")
        [[ "$DATE_ADDED_UTC" !=3D "(null)" ]] || continue
        DATE_ADDED_LOCAL=3D$(date -jf '%F %T %z' "$DATE_ADDED_UTC" =
'+%F')
        echo "The file $F was added on $DATE_ADDED_LOCAL"
    done

vq=