First, please don't respond with "use mrtg, rrdtool, cricket, etc, etc." Silly 'layer 8' reasons are keeping me from being able to utilize these tools at this time.
I have a need to graph SNMP values created by using a simple shell script on a Solaris box. I have output like this:
02-20-2009_08:00 39 19 20 18
23 19 18 18
........ <snip 9 rows of data w/o the date> ........
26 20 20 17
02-20-2009_09:00 23 20 22 18
I want to find a program that will allow me to graph the dates on the x-axis and the values on the y-axis, but I need it to be programmable such that I can run it from cron and send the graph to a directory as a jpeg, gif or png file. I tried using gnuplot, but I can't seem to make it work on outputting only to a file. Even using "set output graph.png". Can someone push me in the right direction?
I'm not sure, but this should probably be discussed off-list...