I have a file say for ex. file1 which has 3500 lines in it which are different account numbers and another file (file2) which has 230000 lines in it. I want to read all the lines in file1 and delete all those lines from file2 which has that same pattern as in file1. I am not quite comfortable with awk, sed and perl. Please help me out. Your time is really appreciated.
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---------- Post updated at 08:31 AM ---------- Previous update was at 08:28 AM ----------
nawk '
FNR==NR {a[$0];next}
{ for(i in a) if (i ~ $0) next}
1' file1 file2
my $reg=qr/,(81457|742222|1089361|1098187),/;
while(<DATA>){
print if not /$reg/;
}
__DATA__
1,81457,81457,1,2,0,947,
1,742222,742222,1,2,0,2994,
1,555555555,555555555,1,2,0,1,
1,796224447,796224447,1,2,0,1,