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Full Discussion: "Print" not working in script
Top Forums Shell Programming and Scripting "Print" not working in script Post 302333564 by TeamUSA on Monday 13th of July 2009 11:34:56 AM
Old 07-13-2009
"Print" not working in script
Hello everybody,

I've gotten a script together that is designed to open a .bin file and read it 32 bits at a time and then add it to the checksum. However, the only issue that I have is that it will not print anything at the end. Can anyone help me? Also, is the & symbol used for restraining the read to 32 bits? Thanks for your help in advanced.

Code:
sub cksum{
 my $word_count;
 my $bias=0;
 my $checksum=0;
 my $srcfile="../file.bin"; 
 my $buffer;
 
 open INF, $srcfile
    or die "\nCan't open $srcfile for reading: $!\n";
 print "Cannot open file.\n";
 binmode INF;
   
  $checksum = $bias;
  #while ($word_count>=0)
  while (
  read (INF, $buffer, 32) # read in (up to) 64k chunks, write
  #and print OUTF $buffer # exit if read or write fails
  ) 
  {$checksum = $checksum + $buffer}; #adding goes here
  $checksum = $checksum & 0xFFFFFFFF;
  print "This is the checksum: $checksum";
  }

 

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LEARN ABOUT DEBIAN

shishi_ap_authenticator_cksumdata

shishi_ap_authenticator_cksumdata(3)				      shishi				      shishi_ap_authenticator_cksumdata(3)

NAME

       shishi_ap_authenticator_cksumdata - API function

SYNOPSIS

       #include <shishi.h>

       int shishi_ap_authenticator_cksumdata(Shishi_ap * ap, char * out, size_t * len);

ARGUMENTS

       Shishi_ap * ap
		   structure that holds information about AP exchange

       char * out  output array that holds authenticator checksum data.

       size_t * len
		   on  input,  maximum length of output array that holds authenticator checksum data, on output actual length of output array that
		   holds authenticator checksum data.

DESCRIPTION

       Get checksum data from Authenticator.

RETURN VALUE

       Returns SHISHI_OK if successful, or SHISHI_TOO_SMALL_BUFFER if buffer provided was too small (then len will hold necessary buffer size).

REPORTING BUGS

       Report bugs to <bug-shishi@gnu.org>.

COPYRIGHT

       Copyright (C) 2002-2010 Simon Josefsson.
       Copying and distribution of this file, with or without modification, are permitted in any medium without  royalty  provided  the  copyright
       notice and this notice are preserved.

SEE ALSO

       The  full documentation for shishi is maintained as a Texinfo manual.  If the info and shishi programs are properly installed at your site,
       the command

	      info shishi

       should give you access to the complete manual.

shishi								       1.0.1				      shishi_ap_authenticator_cksumdata(3)
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