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Top Forums UNIX for Advanced & Expert Users gzip vs pipe gzip: produce different file size Post 302527624 by hanfresco on Friday 3rd of June 2011 09:24:50 PM
Old 06-03-2011
gzip vs pipe gzip: produce different file size

Hi All,

I have a random test file: test.txt, size: 146
$ ll test.txt
$ 146 test.txt

Take 1:
$ cat test.txt | gzip > test.txt.gz
$ ll test.txt.gz
$ 124 test.txt.gz

Take 2:
$ gzip test.txt
$ ll test.txt.gz
$ 133 test.txt.gz

As you can see, gzipping a file and piping into gzip produce different sized *gz files. The problem currently is that some archivers, such as WinZip and Cygwin's gunzip have to unzip the piped gzip file twice before it can be read as a plain text file. Why is this and how can I ensure piping into gzip produces the same file as gzipping a file?

Thanks,
 

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MAILPARSE_UUDECODE_ALL(3)						 1						 MAILPARSE_UUDECODE_ALL(3)

mailparse_uudecode_all - Scans the data from fp and extract each embedded uuencoded file

SYNOPSIS
array mailparse_uudecode_all (resource $fp) DESCRIPTION
Scans the data from the given file pointer and extract each embedded uuencoded file into a temporary file. PARAMETERS
o $fp - A valid file pointer. RETURN VALUES
Returns an array of associative arrays listing filename information. +-------------+-------------------------------------------------+ | | | | filename | | | | | | | Path to the temporary file name created | | | | | | | |origfilename | | | | | | | The original filename, for uuencoded parts only | | | | +-------------+-------------------------------------------------+ The first filename entry is the message body. The next entries are the decoded uuencoded files. EXAMPLES
Example #1 mailparse_uudecode_all(3) example <?php $text = <<<EOD To: fred@example.com hello, this is some text hello. blah blah blah. begin 644 test.txt /=&AI<R!I<R!A('1E<W0* ` end EOD; $fp = tmpfile(); fwrite($fp, $text); $data = mailparse_uudecode_all($fp); echo "BODY "; readfile($data[0]["filename"]); echo "UUE ({$data[1]['origfilename']}) "; readfile($data[1]["filename"]); // Clean up unlink($data[0]["filename"]); unlink($data[1]["filename"]); ?> The above example will output: BODY To: fred@example.com hello, this is some text hello. blah blah blah. UUE (test.txt) this is a test PHP Documentation Group MAILPARSE_UUDECODE_ALL(3)
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