---
name: "modgzip2dlf"
section: "1"
platform: "linux"
package: "lire"
version: "2.1.1-8"
release: "Arch Linux 2026-11-01"
platforms: ["linux"]
url: "https://new.carta.tech/modgzip2dlf"
---

# modgzip2dlf(1)

convert Common Log Format with mod\_gzip extensions web server log files to DLF

## NAME

modgzip2dlf - convert Common Log Format with mod\_gzip extensions web server log files to DLF

## SYNOPSIS

**modgzip2dlf** *file*

## DESCRIPTION

**modgzip2dlf** converts web server log file in the common log format with extensions for mod\_gzip to www DLF.

mod\_gzip is an Apache extension developed by RemoteCommunications, Inc. Sourcecode is free available from http://www.RemoteCommunications.com/apache/mod\_gzip/mod\_gzip. More informations can be found at http://www.RemoteCommunications.com/apache/mod\_gzip/mod\_gzip\_faq.htm.

mod\_gzip can log informations about the compression of pages by configuring Apache to log using the 'gzip' format which can be defined as follows:

```
 LogFormat "%h %l %u %t \"%r\" %>s %b %{mod_gzip_result}n %{mod_gzip_compression_ratio}n" gzip
```

## MOD\_GZIP EXTENSIONS

The mod\_gzip extensions adds two fields to the Common Log Format; see [**common2dlf**(1)](/common2dlf/1.md):

```
  gzip_result compression_ratio
```

- *gzip\_result*

  The **gzip**'s result code. Usually **OK**.

- *compressio\_ratio*

  The ratio by which the content was compressed. A number from 0 to 100.

Log example :

```
  127.0.01 - - [11/03/2001 12:12:01 -0400] "GET / HTTP/1.0" 200 252 "-" "Mozilla/5.0" OK 49
  dsl1.myprovider.com - francis [11/03/2001 12:14:01 -0400] "GET /secret/ HTTP/1.0" 200 300 "http://www.example.com/index.html" "Mozilla/5.0" OK 74
```

## EXAMPLES

To process a log as produced in the modgzip logformat:

```
 $ modgzip2dlf < common.log
```

modgzip2dlf will be rarely used on its own, but is more likely called by lr\_log2report:

```
 $ lr_log2report modgzip < /var/log/httpd/common.log
```

## SEE ALSO

[**common2dlf**(1)](/common2dlf/1.md), **combined**(2), [**referer2dlf**(1)](/referer2dlf/1.md)

## AUTHORS

Joost van Baal \<joostvb@logreport.org\>, Francis J. Lacoste \<flacoste@logreport.org\> and Egon Willighagen \<egonw@logreport.org\>, based on an idea by Edwin Groothuis

## VERSION

`$Id:` modgzip2dlf.in,v 1.10 2006/07/23 13:16:36 vanbaal Exp $

## COPYRIGHT

Copyright (C) 2000, 2001 Stichting LogReport Foundation LogReport@LogReport.org

This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program (see COPYING); if not, check with http://www.gnu.org/copyleft/gpl.html.