_ is not part of the \b character class. TMTOWTDI:
use strict;
use warnings; 


my @array1 = qw (abc_RCF_BM_allocation_0_kl       
              aplc_RCF_BM_allocation_0_in_nml   
              fbe_RCF_BM_allocation_0_in_tvg    
              ap_hu_BM_allocation_0_in_nml);

my @array2 = qw(RCF_BM_allocation_0_in
                BM_allocation_0
                RCF_BM_allocation_0);
                
for my $pattern (@array2) {
    my @results = grep /$pattern/, @array1;
    print "$pattern is in @results\n";
}

[download]
Update: This detects BM_allocation_0 even when it is part of RCF_BM_allocation_0, but it is unclear what is required here.

In reply to Re: check 2 string arrays by cdarke
in thread check 2 string arrays by sharan

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