When written as below, your method indeed does work.

while (<DATA>){
    my @Elements = split(/;/,$_);
    if ($Elements[1] ne '   '){
        print $_;
    }
}

__DATA__
AAD;   ;CCR;365
TEC;UTF;TDE;450
TRE;   ;FTE;164
TEC;URT;TDE;687
ERT;   ;ETR;567
TEC;UGC;TDE;687

[download]

Prints:

TEC;UTF;TDE;450
TEC;URT;TDE;687
TEC;UGC;TDE;687

[download]

This of course prints to STDOUT. However, its success suggests that you have improperly opened INFILE and OUTFILE for reading and writing respectively. Check your open syntax against the perlfunc manpage, or online here.

Update: As another added thought, if your open syntax is correct, perhaps you do not have the proper file access privileges?

In reply to Re^3: select elements in a list by dogz007
in thread select elements in a list by steph_bow

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