# man > what-patch(1)

[_WHAT-PATCH_(1)](https://www.chedong.com/phpMan.php/man/WHAT-PATCH/1/markdown)                          General Commands Manual                         [_WHAT-PATCH_(1)](https://www.chedong.com/phpMan.php/man/WHAT-PATCH/1/markdown)

## NAME
       what-patch - detect which patch system a Debian package uses


## SYNOPSIS
       **what-patch **[_options_]


## DESCRIPTION
       **what-patch  **examines the _debian/rules_ file to determine which patch system the Debian package
       is using.

       **what-patch **should be run from the root directory of the Debian source package.


## OPTIONS
       Listed below are the command line options for **what-patch**:

### -h --help
              Display a help message and exit.

### -v     
              the  _debian/_  directory  and  report  any additional details about the patch system if
              available.


## AUTHORS
       **what-patch   **was   written   by   Kees   Cook   <<kees@ubuntu.com>>,   Siegfried-A.    Gevatter
       <<rainct@ubuntu.com>>,  and  Daniel Hahler <<ubuntu@thequod.de>>, among others.  This manual page
       was written by Jonathan Patrick Davies <<jpds@ubuntu.com>>.

       Both are released under the GNU General Public License, version 3 or later.


## SEE ALSO
       The Ubuntu MOTU team  has  some  documentation  about  patch  systems  at  the  Ubuntu  wiki:
       _<https://wiki.ubuntu.com/PackagingGuide/PatchSystems_>


       [**cdbs-edit-patch**(1)](https://www.chedong.com/phpMan.php/man/cdbs-edit-patch/1/markdown), [**dbs-edit-patch**(1)](https://www.chedong.com/phpMan.php/man/dbs-edit-patch/1/markdown), [**dpatch-edit-patch**(1)](https://www.chedong.com/phpMan.php/man/dpatch-edit-patch/1/markdown)

DEBIAN                                    Debian Utilities                             [_WHAT-PATCH_(1)](https://www.chedong.com/phpMan.php/man/WHAT-PATCH/1/markdown)