Date: Thu, 7 Jun 2012 21:14:11 -0400 (EDT) From: Chris Hill <chris@monochrome.org> To: Fbsd8 <fbsd8@a1poweruser.com> Cc: FreeBSD Questions <freebsd-questions@freebsd.org> Subject: Re: find date of last boot Message-ID: <alpine.BSF.2.00.1206072110350.67420@tripel.monochrome.org> In-Reply-To: <4FD1360D.1060208@a1poweruser.com> References: <4FD1360D.1060208@a1poweruser.com>
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On Thu, 7 Jun 2012, Fbsd8 wrote:
> dmesg command does not show date of last boot.
>
> Are there some other commands to find date of last boot?
That was fun. Google helped me with this; the crappy skillz are all
mine.
--- cut here ---
#!/bin/sh
#
# Find date of last boot
#
DAYS_UP=`uptime | awk '{print $3}'`
SEC_UP=`echo "${DAYS_UP} * 86400" | bc`
DATE=`date`
EPOCH_DATE=`date -j -f "%a %b %d %T %Z %Y" "${DATE}" "+%s"`
BOOT_SEC=`echo "${EPOCH_DATE} - ${SEC_UP}" | bc`
BOOT_DATE=`gawk -v duh=${BOOT_SEC} 'BEGIN{print strftime("%Y-%m-%d",duh)}'`
echo "Last boot on ${BOOT_DATE}"
--- cut here ---
Example from this machine:
$ ./boot_date.sh
Last boot on 2010-12-26
$
Enjoy.
--
Chris Hill chris@monochrome.org
** [ Busy Expunging </> ]
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