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    String found where operator expected at step1_inpout.pl line 21, near
            "$writehandle "+>"" (#1)
    ...
    syntax error at step1_inpout.pl line 23, near "$outputhandle ">""
    Execution of step1_inpout.pl aborted due to compilation errors.
     at step1_inpout.pl line 46
    
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    #! /tools/perl/5.8.8/linux/bin/perl
    use strict;
    use warnings;
    ...
    
    close $readhandle;
    close $writehandle;