Your browser won't display it, because it's expecting an image. So the only place you can find them is the errorlog of your webserver.
You can of course make a errorlog viewer frontend. In perl you can intercept error messages and tag them with some keyword, I don't know if you can do that in a shell script. Perhaps /etc/init.d/functions holds something like that. serge. -----Original Message----- From: Michael Earls [mailto:[EMAIL PROTECTED] Sent: Wednesday, June 11, 2003 3:30 PM To: [email protected] Subject: [rrd-users] rrdtool [bcc][faked-from][mx][bayes] Importance: Low Is there a way to debug error messagesd when creating images? Below is my sh script/cgi to create the image from rrd data. My image output is The image "http://mrtg/cgi-bin/isp/inbound-daily.cgi"; cannot be displayed, because it contains errors. What could case this issue? #!/bin/sh echo "Content-Type: image/png" echo rrdtool graph - \ --imgformat PNG \ --interlaced \ --start="-86400" \ --title 'ISP Traffic Inbound' \ --base="1000" \ --width="750" \ --height="200" \ --alt-autoscale-max \ --vertical-label "Kilobytes Per Second" \ DEF:if="/var/www/mrtg/traffic/isp/fastethernet2_0.rrd":ds0:AVERAGE \ DEF:io="/var/www/mrtg/traffic/isp/atm1_0.91-aal5_layer.rrd":ds0:AVERAGE \ CDEF:infuse="if,8,*" \ CDEF:inoar="io,8,*" \ LINE2:infuse#00CF00:"isp1" \ GPRINT:inuse:LAST:" Current\:%8.2lf %s" \ GPRINT:inuse:AVERAGE:"Average\:%8.2lf %s" \ GPRINT:inuse:MAX:"Maximum\:%8.2lf %s\n" \ LINE2:inoar#002A97:"isp2" \ GPRINT:inoar:LAST:"Current\:%8.2lf %s" \ GPRINT:inoar:AVERAGE:"Average\:%8.2lf %s" \ GPRINT:inoar:MAX:"Maximum\:%8.2lf %s" Thanks, michael -- Unsubscribe mailto:[EMAIL PROTECTED] Help mailto:[EMAIL PROTECTED] Archive http://www.ee.ethz.ch/~slist/rrd-users WebAdmin http://www.ee.ethz.ch/~slist/lsg2.cgi
