Message-ID: <26363163.post@talk.nabble.com>
Date: Sun, 15 Nov 2009 12:47:52 -0800 (PST)
From: aputerguy <nabble@kosowsky.org>
To: cygwin@cygwin.com
Subject: Re: Would it be possible/hard to write a version of 'at' that  executes "right away" to get around ssh username=SYSTEM?
In-Reply-To: <26362968.post@talk.nabble.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit
References: <26362968.post@talk.nabble.com>
Mailing-List: contact cygwin-help@cygwin.com; run by ezmlm
Precedence: bulk
Sender: cygwin-owner@cygwin.com
Mail-Followup-To: cygwin@cygwin.com


And in case anyone is interested, here is a bash function that launches a
command via 'at' at the next minute and returns the number of seconds until
the launch (actually if you are less than 5 seconds before the next minute,
it waits until the minute after so that at has time to setup - you could
probably use a number smaller than 5 seconds of course)

function at_launch ()
{
    local h m s wait command
	command=$@
    set -- $(date +"%H %M %S")
	h=$((10#$1))  #Note explicitly use base 10 so that 08 and 09 not
interpreted as bad octal
	m=$((10#$2 +1)) #Advance minutes by 1
	s=$((10#$3))
	wait=$((60 - $s))
    [ $s -gt 55 ] && let "m += 1" "wait += 60" # Make sure >5 seconds left
    [ $m -ge 60 ] && let "m %= 60" "h += 1" #Overflow minutes
    let "h %= 24"
	at $h:$m $(cygpath -w $(which bash.exe)) -c \"$command\" > /dev/null
	return $wait
}
-- 
View this message in context: http://old.nabble.com/Would-it-be-possible-hard-to-write-a-version-of-%27at%27-that-executes-%22right-away%22-to-get-around-ssh-username%3DSYSTEM--tp26362968p26363163.html
Sent from the Cygwin list mailing list archive at Nabble.com.


--
Problem reports:       http://cygwin.com/problems.html
FAQ:                   http://cygwin.com/faq/
Documentation:         http://cygwin.com/docs.html
Unsubscribe info:      http://cygwin.com/ml/#unsubscribe-simple