I modified my script and named my variables names $input and $output. The result is the same, how can i verify that my script is running?? -- View this message in context: http://n2.nabble.com/I-need-help-with-my-rrd-file-tp1120359p1120979.html Sent from the RRDtool Users Mailinglist mailing list archive at Nabble.com.