Hi Lina,
A simple solution I can provide is:
while (my $line = <$fh>){
if ($line =~ /^A$/){
# read 8 lines
# print each line
}
}
2012/3/11 lina <lina.lastn...@gmail.com>
> On Sun, Mar 11, 2012 at 10:45 PM, lina <lina.lastn...@gmail.com> wrote:
> > A
> > 7.803481E-01 8.228973E-01 7.515242E-01 2 1833
> > -5.5000000000 308.3889771284 5 0 7 1.7084151661
> > 1.6790503987 2.75458
> > 53558
> > 7.866901E-01 8.410519E-01 9.981456E-01 2 14485
> > -5.5000000000 269.6201271260 39 4 7 -2.5561279716
> > -3.5975355928 1.5117
> > 155069
> > C
> > 7.735338E-01 9.981671E-01 7.735798E-01 2 11514
> > -5.5000000000 289.1918534266 31 1 7 -5.6311359613
> > -0.0502358314 0.0768
> > 146957
> > 5.907322E-02 6.045568E-02 3.388628E-02 1 28
> > -6.5000000000 336.0228260493 1 2 7 0.8177802191
> > 3.9634621584 -3.0314
> > 370501
> > A
> > 2.764127E-02 3.230161E-02 1.633790E-02 1 51
> > -6.5000000000 319.7604886848 1 3 7 0.7583797888
> > 3.5176580829 -1.87872
> > 93439
> > 5.960780E-02 2.111333E-02 1.066835E-01 1 62
> > -6.5000000000 297.7363059936 1 1 7 2.2257828331
> > 3.7887567121 -3.4478
> > 600377
> >
> >
> > I am so troubled with extract the lines after A but not the lines
> > under C out, so the final result is
> >
> > 7.803481E-01 8.228973E-01 7.515242E-01 2 1833
> > -5.5000000000 308.3889771284 5 0 7 1.7084151661
> > 1.6790503987 2.75458
> > 53558
> > 7.866901E-01 8.410519E-01 9.981456E-01 2 14485
> > -5.5000000000 269.6201271260 39 4 7 -2.5561279716
> > -3.5975355928 1.5117
> > 1550692.764127E-02 3.230161E-02 1.633790E-02 1 51
> > -6.5000000000 319.7604886848 1 3 7 0.7583797888
> > 3.5176580829 -1.87872
> > 93439
> > 5.960780E-02 2.111333E-02 1.066835E-01 1 62
> > -6.5000000000 297.7363059936 1 1 7 2.2257828331
> > 3.7887567121 -3.4478
> > 600377
> >
> >
> > Thanks for you suggestions,
>
> What I have come up so far :
>
> #!/usr/bin/env perl
>
> use strict;
> use warnings;
>
> my $filename = "try.txt";
>
> open my $fh, '<', $filename or die "Couldn't read $filename";
>
>
>
> while (my $line = <$fh>){
> if ($line =~ /^A$/){
> ## Here I don't know how to proceed further
> print $line;
> }
> }
>
> Thanks
>
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