This the my script i am editing postscript files and want to search entities and replace with exact special character.

eg:

s/\α/a/g;
s/\β/ß/g;

s/\&zeta1;/\\xce\\xb6/g;
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Pls help me in this.

system("dir *.ps /b >file.log");

open(in, "file.log");
@files = <in>;
close(in);
system("del file.log");

foreach $files(@files)
{
open(inp, $files);
$file = "New" . $files;
open(out, ">$file");

while(<inp>)
{
 while(/\[\/FitR ([0-9]+) ([0-9]+) ([0-9]+) ([0-9]+)\]/)
    {
     s/\[\/FitR ([0-9]+) ([0-9]+) ([0-9]+) ([0-9]+)\]/\[\/FitH $2\]/;
    }
 s/3B2 Total Publishing System 7\.51d\/W/3B2 Publishing System/g;

s/\&alpha;/a/g;
s/\&beta;/ß/g;
 s/\&chi;/chi/g;
 s/\&delta;/delta/g;
 s/\&epsi;/epsi/g;
 s/\&beta;/beta/g;
 s/\&phi;/phi/g;
 s/\&gamma;/gamma/g;
 s/\&eta;/eta/g;
 s/\&iota;/iota/g; 
 s/\&thetav;/thetav/g;
 s/\&kappa;/kappa/g;
 s/\&lambda;/lambda/g;
 s/\&mu;/mu/g;
 s/\&nu;/nu/g;
 s/\&omicr;/omicr/g;
 s/\&pi;/pi/g;
 s/\&theta;/theta/g;
 s/\&rho;/rho/g;
 s/\&sigma;/sigma/g;
 s/\&tau;/tau/g;
 s/\&upsi;/upsi/g;
 s/\&sigmav;/sigmav/g;
 s/\&omega;/omega/g;
 s/\&xi;/xi/g;
 s/\&psi;/psi/g;
s/\&zeta1;/\\xce\\xb6/g;

 s/\&Delta;/Delta/g;
 s/\&Phi;/Phi/g;
 s/\&Gamma;/Gamma/g;
 s/\&Lambda;/Lambda/g;
 s/\&Pi;/Pi/g;
 s/\&Theta;/Theta/g;
 s/\&Sigma;/Sigma/g;
 s/\&Upsi;/Upsi/g;
 s/\&Omega;/Omega/g;
 s/\&Xi;/Xi/g;
 s/\&Psi;/Psi/g;


 s/\&prime;/'/g;
 s/\&plus;/+/g;
 s/\&sol;/\//g;
 s/\&z.urule;/\//g;
 s/\&ff;/ff/g;
 

s/\[\/Dest \/bib.[0-9][0-9][0-9][0-9] \/Title \(fig\) \/OUT pdfmark//g
+;
if((/\/OUT pdfmark/) && (/\/Title \((fig|bib|tbl|sec)\)/))
{
 s/\[\/Dest \/.*? \//\[\/Dest \/unknown \//;
}

print out $_;
}
close(inp);
close(out);

$file =~ s/\n//;
$files =~ s/\n//;
system("ren $file $files");

}
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