perl file
use warnings;
use strict;
my $inputfile = $ARGV[0]; # input lib FILE

if ($#ARGV!=0)
{
   print "USAGE :: perl max_tran_update.pl <<LIB_FILE>>  \n\n" ;
   exit(1);   
}

my $cmd = "mkdir  tmpdir;";
system ($cmd);

my $iline;
my $flag_outpin=0;
my $out_pin_flag=0;


open (INFILE,"<","$inputfile") || die "Can not open Input LIB File";
open (my $OPFILE,">","tmpdir/input_lib.lib") || die "Can not open Input Text File";

while ($iline = <INFILE>)
{
  chomp $iline;
  print $OPFILE "$iline\n";
     if (($iline =~m/^\s*direction\s*:\s*output\s*;/g))
     {
         $flag_outpin=1;
	 while ($iline = <INFILE>)
         {
	   if (($iline =~m/^\s*direction\s*:\s*input\s*;/g))
           {
	    $flag_outpin=0;
	   }
	   if (($iline =~m/^\s*direction\s*:\s*output\s*;/g))
           {
	    $flag_outpin=1;
	   }
	   if (($iline =~m/^\s*max_transition\s*:/g) && ($flag_outpin == 1))
	   {
	    $iline =~ s/$iline//g ;
	   }
	   else 
	   {
	    print $OPFILE "$iline";
	   }
	 }
      }
}	  
close INFILE;
close $OPFILE;

##</code><code>##

IN_FILE
  cell (lib_1) {
    dont_use : true ;
    dont_touch : true ;

    pin ("HIZIBI_IN_1") {
      direction : input ;
      clock : true ;
      max_transition : 1 ;
      capacitance : 12 ;
    }  
    pin ("HIZIBI_79")    {
      direction : output ;
      max_transition : 10;
      min_capacitance : 3 ;
    }              
    pin ("HIZIBI_IN_1") {
      direction : input ;
      clock : true ;
      max_transition : 1 ;
      capacitance : 1 ;
    }  
    pin ("HIZIBI_78")    {
      direction : output ;
      max_transition : 10;
      min_capacitance : 34 ;
      capacitance : 34 ;
    }            
    pin ("HIZIBI")    {
      direction : output ;
      clock : true ;
      max_transition : 20;
      related_power_pin : VDD ;
      related_ground_pin : VSS ;
      timing () {
        cell_fall (into_f1) {
          index_1("1,2,3,4,5") ;
          index_2("1,2,3,4,5") ;
          values("13, 13, 14, 16, 18",\
                 "13, 14, 15, 16, 19",\
                 "14, 15, 16, 17, 20",\
                 "15, 15, 16, 18, 20",\
                 "15, 16, 17, 18, 21") ;
        }  
      }  
    }
  }

##</code><code>##

OUT_FILE
  cell (lib_1) {
    dont_use : true ;
    dont_touch : true ;

    pin ("HIZIBI_IN_1") {
      direction : input ;
      clock : true ;
      max_transition : 1 ;
      capacitance : 12 ;
    }  
    pin ("HIZIBI_79")    {
      direction : output ;
      max_transition : 10;
      min_capacitance : 3 ;
    }              
    pin ("HIZIBI_IN_1") {
      direction : input ;
      clock : true ;
      max_transition : 1 ;
      capacitance : 1 ;
    }  
    pin ("HIZIBI_78")    {
      direction : output ;
      max_transition : 10;
      min_capacitance : 34 ;
      capacitance : 34 ;
    }            
    pin ("HIZIBI")    {
      direction : output ;
      clock : true ;
      related_power_pin : VDD ;
      related_ground_pin : VSS ;
      timing () {
        cell_fall (into_f1) {
          index_1("1,2,3,4,5") ;
          index_2("1,2,3,4,5") ;
          values("13, 13, 14, 16, 18",\
                 "13, 14, 15, 16, 19",\
                 "14, 15, 16, 17, 20",\
                 "15, 15, 16, 18, 20",\
                 "15, 16, 17, 18, 21") ;
        }  
      }  
    }
  }