httpd - Apache Hypertext Transfer Protocol Server
httpd is the Apache HyperText Transfer Protocol
(HTTP) server program. It is designed to be run as a standalone
daemon process. When used like this it will create a pool of
child processes or threads to handle requests.
httpd should not be invoked directly,
but rather should be invoked via
apachectl on Unix-based systems or as a service on Windows NT,
2000 and XP and as
a console application on Windows 9x and ME.
httpd [ -d
serverroot ] [ -f config ]
[ -C directive ] [ -c
directive ] [ -D parameter ]
[ -e level ] [ -E
[ -k start|restart|graceful|stop|graceful-stop ]
[ -R directory ] [ -h ]
[ -l ] [ -L ] [ -S ]
[ -t ] [ -v ] [ -V ]
[ -X ] [ -M ] [ -T ]
On Windows systems, the following additional arguments are available:
httpd [ -k
install|config|uninstall ] [ -n name ]
[ -w ]
- Set the initial value for the
ServerRootdirective to serverroot. This can be overridden by the ServerRoot directive in the configuration file. The default is
- Uses the directives in the file config on startup. If
config does not begin with a /, then it is taken to be a
path relative to the
ServerRoot. The default is
httpdto start, restart, or stop. See Stopping Apache httpd for more information.
- Process the configuration directive before reading config files.
- Process the configuration directive after reading config files.
- Sets a configuration parameter which can be used with
<IfDefine>sections in the configuration files to conditionally skip or process commands at server startup and restart. Also can be used to set certain less-common startup parameters including
-DNO_DETACH(prevent the parent from forking) and
-DFOREGROUND(prevent the parent from calling
- Sets the
LogLevelto level during server startup. This is useful for temporarily increasing the verbosity of the error messages to find problems during startup.
- Send error messages during server startup to file.
- When the server is compiled using the
SHARED_CORErule, this specifies the directory for the shared object files.
- Output a short summary of available command line options.
- Output a list of modules compiled into the server. This will
not list dynamically loaded modules included using
- Output a list of directives together with expected arguments and places where the directive is valid.
- Dump a list of loaded Static and Shared Modules.
- Show the settings as parsed from the config file (currently only shows the virtualhost settings).
-T(Available in 2.2.17 and later)
- Skip document root check at startup/restart.
- Run syntax tests for configuration files only. The program immediately exits after these syntax parsing tests with either a return code of 0 (Syntax OK) or return code not equal to 0 (Syntax Error). If -D DUMP_VHOSTS is also set, details of the virtual host configuration will be printed. If -D DUMP_MODULES is set, all loaded modules will be printed.
- Print the version of
httpd, and then exit.
- Print the version and build parameters of
httpd, and then exit.
- Run httpd in debug mode. Only one worker will be started and the server will not detach from the console.
The following arguments are available only on the Windows platform:
- Install Apache httpd as a Windows NT service; change startup options for the Apache httpd service; and uninstall the Apache httpd service.
- The name of the Apache httpd service to signal.
- Keep the console window open on error so that the error message can be read.