if I have a file conatining the following:

1555009 1555001 1555008 1555021 1465010 1465006 1465005 1465004 1465003 1465002 1465001 1465008 1465022 Ring 16 Size 11 1555001 1555001 1555001 1465001 1465001 1465001 1465001 1465001 1465001 1465001 1465001 .. H22 -- N8 -- H21 .. O10 == C6 -- C5 -- C4 -- C3 -- C2 -- C1 == O9 1555022 1555008 1555021 1465010 1465006 1465005 1465004
1465003 1465002
1465001 1465009
Initial graph set matrix : period 1 patterns
1 2 3 4
----------
C 1, 1( 9) C 1, 1( 4) C 1, 1( 9) C 1, 1( 4)
----------
Initial graph set matrix : period 2 patterns
1 2 3 4
----------
C 2, 2(13) R 2, 2( 8) C 2, 2(13)
----------
C 2, 2(11) C 2, 2(13) R 2, 2(18)
----------
C 2, 2(18) C 1, 2(11) C 2, 2(13)
----------
C 1, 2(11) C 2, 2(18) C 2, 2(11)

how can I tell perl to just read the following pattern (can have any letters or numbers) /C1, 2(11)
do i need to use grep ?
cheers harry

In reply to reading certain lines by harry34

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