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```
undef($/);
while (<FILE>) {
}
```
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```
undef($/);
$_ = <FILE>;
```
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```
s/[\,|\.|\!|\?|\:|\;|\"|\'|\<|\>]//g;
```
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```
s/[\,\.\!\?\:\;\"\'\<\>||||||||]//g;
```
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```
s/[\,\.\!\?\:\;\"\'\<\>|]//g;
```
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```
s/\,|\.|\!|\?|\:|\;|\"|\'|\<|\>//g;
```
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```
s/[\,\.\!\?\:\;\"\'\<\>]//g;
```

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@array = split(/\ /, $_);

s/[\,\.\!\?\:\;\"\'\<\>]//g;

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@array = split(/ /, $_);

s/[,.!?:;"'<>]//g;

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```
'<insertfilepath>' || $!
```
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```
'<insertfilepath>'
```
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```
@array = split(/ /, $_);
```
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```
@array = split(' ', $_);
```

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use strict;
use warnings;
...
for my $word (sort keys(%word_counts)) {
   print "$word occurred $word_counts{$word} times\n";
}

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use strict;
use warnings;
...
for my $word (sort keys(%word_counts)) {
   print "$word occurred $word_counts{$word} times\n";
}