Well you can go for this, this change is required in your first line of code: 
if($line =~ m/^Width(\s*)\=(\s*)(\d*)/)#to match width

[download]
Please go through Regular Expressions tutorials for a better understanding, these are very simple search techniques This is my program 
$line = 'Width = 32 <uart0_rx_data : 16\'h0000> Descr - "This is Regis
+ter1 comment" f_name    bit_pos  RESERVED    31:8  RXDATA        5:0 
+  </uart0_rx_data>';
if($line =~ m/^Width(\s*)\=(\s*)(\d*)/) # to match Width
{
  print "something";
}
elsif ($line =~ m/^Descr[\s]*-[\s]*[\w]+$/) # to match Descr
{
  print "noone";
}
else
{
  printf "Garbage found: \"%s\" \n",$line;
}

[download]
UPDATE:: So, WW I haven't said that this is the only way there are lots of way to do things in perl. Secondly, I didn't say that what you need to print the width value. Yes $3 will give the exact output, while you are completely wrong on the statement that it will not match ) after equal to. Check it and then say.

In reply to Re: Regular Expression by ckj
in thread Regular Expression by pramod

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