To make the existing code work you need to skip the lines that don't have enough elements for the split to return for your comparisons:

while (<SNMP>) {
    next if /^#|^\s*$/;
...

[download]

or try this to use a regular expression instead;

while (<DATA>) {
    print "$1\n" if /^snmpmanager\s+(\d+\.\d+\.\d+\.\d+)\s+;\s+communi
+tyname/;
}

__DATA__
#test file
#example:
snmpmanager 10.52.37.99 ; communityname public

[download]

In reply to Re: Need help with SNMP script by Lotus1
in thread Need help with SNMP script by Xandrex

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