An array contains few user IDs. Each user ID is used as a match element in another file. How to match a specific line and array element? And print words at previous line?

The specific line is:

  cell ("b05hrn23ud0d3") {

array file: 

 b05bdc00lnz64 

 b05hrn23ud0d3 

 b05bgn00lnz00 

 b05bgn01lnz00

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coding: 

foreach $a (@arr) {   #read each line in array file

for (my $count=0; $count <5; $count++) {     #iteration for each ID in
+ array file

if(@arr[$count] =~ m/cell\(@arr[$count])){    #match specific line

        print "aa\n";                 #print words at previous line
}
}

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In reply to Perl: How to match a line and print words at line immediately above it? by WWq

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