Alternatively, if the initial condition is essential, you can use a capture on the lead in. This is inefficient, but necessary without variable-length look behind support.

$oidfila  =~ s/(^[0-9\.]+)\.[0-9]+$/$1/;

In reply to Re^2: regexp problem - extract all but last part of SNMP OID by kennethk
in thread regexp problem - extract all but last part of SNMP OID by llagos

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