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#!/usr/bin/perl use strict; my $line; my $l1 = ''; my $l2 = '=y'; while (<>) { chomp; /^(# )BR2_LARGEFILE(.+)$/ and do { $l1 = $1; $l2 = $2; }; /^(# )?BUSYBOX_(.+)/ and do { my $p1 = $1; my $p2 = $2; $p2 =~ /(CONFIG_LFS|FDISK_SUPPORT_LARGE_DISKS)/ and do { $p1 = $l1; $p2 = "$1$l2"; }; print "$p1$p2\n"; } }