On Mon, Jul 11, 2011 at 06:45:08PM -0700, Steve Edwards wrote:
while read line; do
epoch=`echo $line | cut -d '|' -f 1`
if [ $epoch -ge $start_epoch -a $epoch -le $end_epoch ]; then
echo $line
fi
done < /var/log/asterisk/queue_log
[snipping snippy comments about improving the second line]
epoch=${line:0:10}
Since the Epoch will be 10 digits for the next 300 years, I'd feel
relatively comfortable with this solution.
On Wed, 13 Jul 2011, Tzafrir Cohen wrote:
For the record, I suspect you meant:
epoch=${line%%|*}
I didn't mean it, but I like it. Thanks.
Actually, that mistake is easy to make in shell scripts. But even simple
script languages such as awk fare much better here:
awk -F'|' "{
epoch=\$1;
if (epoch <= $start_epoch && epoch >= $end_epoch) {
print epoch
}
}" /var/log/asterisk/queue_log
1) The 2 conditionals should be swapped.
2) I think you meant 'print \$0' instead of 'print epoch'
We'll leave defining start_epoch and end_epoch as an exercise for the
reader :)
How much time will it take you to write something as fast as this in C?
Well, the C version was still 10 times faster, but I concede it took a
whole lot longer to write.
The question always comes down to how many times are you going to use it
and how much will it cost to make it faster.
--
Thanks in advance,
-------------------------------------------------------------------------
Steve Edwards sedwa...@sedwards.com Voice: +1-760-468-3867 PST
Newline Fax: +1-760-731-3000
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