Guys,

I have gone through many other forums and have been directed to this place. I hope somebody will help me on this question.

Cheers

I have split my question into 2 for easier reading.

Part 1

I am replacing the below of piece of code 

perl -pi -e 's/[ ]*\~\t\~[ ]*/~/g' a.dat");
perl -pi -e 's\/^[ ]*\/\/g' a.dat");
perl -pi -e 's/\:000[A,P]M//g' a.dat");
perl -pi -e 's/99991231//g' a.dat");
perl -pi -e 's/Jan 1 1900 12:00:00//g' a.dat");

[download]
instead of 
while (<IN_FILE>)
{
s/^[ ]*//g;
s/[ ]*$//g;
s/\:000[A,P]M//g;
s/99991231//g;
s/Jan 1 1900 12:00:00//g;
s/[ ]*\~\t\~[ ]*/~/g;
}

[download]
The data filesize is huge.
Both of these take almost the same time (25min). Is there a way I can reduce this time.

Part B

I am trying to date fields contain SUN then replace with blanks and using the below code.

Bascially I want to optimise the below piece of code with includes part A. Altogether it takes 35min.

Appreciate a reply from you guys.

Thanks 

while (<IN_FILE>)
{
s/^[ ]*//g;
s/[ ]*$//g;
s/\:000[A,P]M//g;
s/99991231//g;
s/Jan 1 1900 12:00:00//g;
s/[ ]*\~\t\~[ ]*/~/g;
@INPUT_FIELDS = split /~/, $_;
for ($i=0; $i<=$#PROC_FIELDS; $i++) {
$MY_INDEX = $PROC_FIELDS[$i] - 1;
if ( $INPUT_FIELDS[$MY_INDEX] =~/SUN/ ) {
$INPUT_FIELDS[$MY_INDEX] = "";
}
}
$MYLINE = join "~", @INPUT_FIELDS;

print OUT_FILE $MYLINE;
}
close(IN_FILE);
close(OUT_FILE);

[download]

In reply to Search and Replace. by Doniv

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