perl - Reading multi-line records -


given code data file content of each data records, i'm unable print first line of each record. however, print first line of first record in: 1aaaaaaaaaaaaa

special note: i'm sure there many ways this, in case, need solution follows code question....

data file content of records 

  1aaaaaaaaaa    aaaaaaaaaaa    aaaaaaaaaaa    __data__    1bbbbbbbbbb    bbbbbbbbbbb    bbbbbbbbbbb    __data__    1cccccccccc    ccccccccccc    ccccccccccc    __data__    {        local $/="__data__\n";         open $fh,"<","loga.txt" or die "unable open file";         while(<$fh>)        {          # remove input record separator value of __data__\n         chomp;           # display line of each record          if(/([^\n]*)\n(.*)/sm)          {             print "$1\n";          }        }        close ($fh);    }

i undesirable output of:

  [root@yeti]# perl test2.pl       1aaaaaaaaaaaaa   [root@yeti]#

i need output of first line of each record.....

1aaaaaaaaaaa 1bbbbbbbbbbb 1ccccccccccc

to debug, find state of program diverges expectations, backtracking until find cause.

checking program reveals loop entered once , $_ contains entire file. means perl didn't find line terminator ("__data__\n").

examining file finds spaces between __data__ , newline. remove trailing spaces file.

perl -i -ple's/\s+\z//' loga.txt

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