On Tue, Jun 03, 2014 at 11:55:55AM -0400, Tim Dunphy wrote:
> while true
> do
> echo "Time and date: $(/bin/date +"%D %H:%M:%S")" >>
> /tmp/apache_request_log >> /tmp/apache_request_log
> echo ???hostname: $(/bin/hostname -f)\n??? >> /tmp/apache_request_log
> echo ???host ip: $(/bin/hostname -i)??? >> /tmp/apache_request_log
> echo "Server Stats: $(/usr/bin/GET `hostname -f`/server-status/?auto |
> /bin/egrep -i 'kbytes')" >> /tmp/apache_request_log
> echo "Server Stats: $(/usr/bin/GET `hostname -f`/server-status/?auto |
> /bin/egrep -i 'ReqPerSec')" >> /tmp/apache_request_log
> echo -e "\n"
> sleep 60
> done
Look at this code structure:
while true
do
{
echo Time and date: $(date +"%D %H:%M:%S")
echo Hostname: $(hostname -f)
echo Hostname IP: $(hostname -i)
...
...
# Leave two blank lines
echo
echo
} >> /tmp/apache_request_log
sleep 60
done
Note how we're only doing one redirect; this makes the code easier
to read and less likely to make a mistake (and more efficient).
> Still can't get the echo -e "\n" statement to print a new line for some
> reason. Other than that I'm good. And thanks for everyone's help!
That's one of the mistakes; you forgot the >> /tmp/apache_request_log
on the echo line. But "echo" on its own without anything else leaves
a blank line.
The next clever bit is to not call "GET" twice; why make apache do
twice the work? Call it once and store the results in a variable
stat=$(GET $(hostname -f)/server-status/?auto)
echo Server Stats: $(echo "$stat" | grep -i kbytes)
echo Server Stats: $(echo "$stat" | grep -i ReqPerSec)
(You can get even more clever, but that's a little more involved; we'll
start with some basics :-))
So we end up with something like:
#!/bin/bash
# These never change...
name=$(hostname -f)
ip=$(hostname -i)
# Once a minute, record some stats
while true
do
{
echo Time and date: $(date +"%D %H:%M:%S")
echo Hostname: $name
echo Hostname IP: $ip
stat=$(GET $name/server-status/?auto)
echo Server Stats: $(echo "$stat" | grep -i kbytes)
echo Server Stats: $(echo "$stat" | grep -i ReqPerSec)
echo
echo
} >> /tmp/apache_request_log
sleep 60
done
--
rgds
Stephen
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