From: "Cooper, Karl \(US SSA\)" <karl.cooper@baesystems.com>
To: "Jerry D. Hedden" <jdhedden@1979.usna.com>, <cygwin@cygwin.com>
Subject: RE: Finding either boot time or login time
Date: Mon, 02 Feb 2009 16:54:00 -0000 [thread overview]
Message-ID: <7b4dai$em8g8@dmzms99901.na.baesystems.com> (raw)
> Mark J. Reed writes:
>> One-liner to display the boot time:
>> $ perl -lane 'print ~~localtime(time-$F[0])' /proc/uptime
>
> Ronald Fischer wrote:
>> Would you mind explaining the ~~ trick?
>
> Clever tricks are interesting, but definitely are an obfuscation.
> This makes things more plain:
>
> perl -lane 'print(scalar(localtime(time() - int($F[0]))))'
> /proc/uptime
I don't know perl, but I did try both of these one-liners on my
Cygwin 1.7 setup, and the output differs (by one second). I thought
that was interesting.
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next reply other threads:[~2009-02-02 16:54 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-02-02 16:54 Cooper, Karl (US SSA) [this message]
2009-02-02 17:37 ` Owen Rees
-- strict thread matches above, loose matches on Subject: below --
2009-01-30 15:33 Ronald Fischer
2009-01-30 15:58 ` Eric Blake
2009-01-30 15:58 ` Ronald Fischer
2009-01-30 16:43 ` Fabian Cenedese
2009-01-30 17:02 ` Mark J. Reed
2009-02-02 14:11 ` Ronald Fischer
2009-02-02 14:34 ` Jerry D. Hedden
2009-02-02 20:28 ` Mark J. Reed
2009-01-30 22:08 ` Brian Mathis
2009-01-30 22:45 ` Owen Rees
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