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Top Forums Shell Programming and Scripting Get Nth record from last line Post 302315863 by jim mcnamara on Wednesday 13th of May 2009 11:22:57 AM
Old 05-13-2009
One way - assume you want line #101 from the end
Code:
tail -101 filename | head -1

 

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OID(3)							User Contributed Perl Documentation						    OID(3)

NAME
NetSNMP::OID - Perl extension for manipulating OIDs SYNOPSIS
use NetSNMP::OID; my $oid = new NetSNMP::OID('sysContact.0'); if ($oid < new NetSNMP::OID('ifTable')) { do_something(); } my @numarray = $oid->to_array(); # appending oids $oid = new NetSNMP::OID('.1.3'); $oid += ".6.1"; # -> .1.3.6.1 # appending index strings $oid2 = $oid + ""wes""; # -> .1.3.6.1.3.119.101.115 $oid3 = $oid + "'wes'"; # -> .1.3.6.1.119.101.115 $len = $oid3->length(); # -> 7 # retrieving indexes from an oid: $arrayref = $tableoid->get_indexes() DESCRIPTION
The NetSNMP::OID module is a simple wrapper around a C-based net-snmp oid (which is an array of unsigned integers). The OID is internally stored as a C array of integers for speed purposes when doing comparisons, etc. The standard logical expression operators (<, >, ==, ...) are overloaded such that lexographical comparisons may be done with them. The + operator is overloaded to allow you to append stuff on to the end of a OID, like index segments of a table, for example. EXPORT int snmp_oid_compare(oid1, oid2) int compare(oid1, oid2) AUTHOR
Wes Hardaker, <hardaker@users.sourceforge.net> SEE ALSO
SNMP, perl. Copyright Copyright (c) 2002 Networks Associates Technology, Inc. All Rights Reserved. This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself. perl v5.12.1 2009-04-23 OID(3)
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