my $md5chksum = &calcMD5( $save_file );

[download]
How do you calculate MD5? You don't show that subroutine. Are you aware that Digest::MD5 is CORE?

You should also be aware that invoking subroutines with the & sigil shows different behavior than calling a subroutine without it -- see Prototypes in perlsub. It can also interfere with optimization -- see Constant Functions in the same document. 

               my $cmd = "rm $save_file";
#               `$cmd`;

[download]
Rather than invoking a system command, you can use unlink. 

            open ( MD5, '+>>', $md5File )
               || &loggingError("Couldn't open md5 file ($md5File) for
+ reading : $!");

            $md5row = <MD5>;
            close( MD5 );

[download]
It's generally good practice to use lexical file handles, since barewords are globals. Search for "lexical" in open.

#11929 First ask yourself `How would I do this without a computer?' Then have the computer do it the same way.

In reply to Re: Can't update file by kennethk
in thread Can't update file by TClayJ

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