in reply to Have a multiple file in directory and want to manipulate in each files in incremental order. All the file have same value.

'.' is the current directory and '..' is the parent directory. Neither is a file so you can't open them as a file. You can test for files and skip anything that's not a file:

for my $fileName (@files) {
    next if ! -f $fileName;
    
    open my $in_fh, '<', $fileName;
    ...
}

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Re^2: Have a multiple file in directory and want to manipulate in each files in incremental order. All the file have same value.
by graff (Chancellor) on Dec 23, 2014 at 09:05 UTC
    Or, to put that into "plain English" perl: 
    for my $fileName ( @files ) {
    next unless -f $fileName;
    ...
}

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