How to display httpd Version?

You run the command below to get the above information:

# /usr/apache2/2.2/httpd -v

root@MySolaris:/usr/apache2/2.2/bin# ./httpd -h
Usage: ./httpd [-D name] [-d directory] [-f file]
               [-C "directive"] [-c "directive"]
               [-k start|restart|graceful|graceful-stop|stop]
               [-v] [-V] [-h] [-l] [-L] [-t] [-S]
Options:
  -D name            : define a name for use in  directives
  -d directory       : specify an alternate initial ServerRoot
  -f file            : specify an alternate ServerConfigFile
  -C "directive"     : process directive before reading config files
  -c "directive"     : process directive after reading config files
  -e level           : show startup errors of level (see LogLevel)
  -E file            : log startup errors to file
  -v                 : show version number
  -V                 : show compile settings
  -h                 : list available command line options (this page)
  -l                 : list compiled in modules
  -L                 : list available configuration directives
  -t -D DUMP_VHOSTS  : show parsed settings (currently only vhost settings)
  -S                 : a synonym for -t -D DUMP_VHOSTS
  -t -D DUMP_MODULES : show all loaded modules 
  -M                 : a synonym for -t -D DUMP_MODULES
  -t                 : run syntax check for config files

root@MySolaris:/usr/apache2/2.2/bin# ./httpd -l
Compiled in modules:
  core.c
  prefork.c
  http_core.c
  mod_so.c

root@MySolaris:/usr/apache2/2.2/bin# ./httpd -L
,  or 
,  or 
,  or 
,  or 
,  or 
,  or  and in .htaccess
        when AllowOverride includes AuthConfig
AuthName (core.c)
        The authentication realm (e.g. "Members Only")
        Allowed in *.conf only inside ,  or  and in .htaccess
        when AllowOverride includes AuthConfig
Require (core.c)
        Selects which authenticated users or groups may access a protected space
        Allowed in *.conf only inside ,  or  and in .htaccess
        when AllowOverride includes AuthConfig
Satisfy (core.c)
        access policy if both allow and require used ('all' or 'any')
        Allowed in *.conf only inside ,  or  and in .htaccess
        when AllowOverride includes AuthConfig
AddDefaultCharset (core.c)
        The name of the default charset to add to any Content-Type without one or 'Off' to disable
        Allowed in *.conf anywhere and in .htaccess
        when AllowOverride includes FileInfo
AcceptPathInfo (core.c)
        Set to on or off for PATH_INFO to be accepted by handlers, or default for the per-handler preference
        Allowed in *.conf anywhere and in .htaccess
        when AllowOverride includes FileInfo
AccessFileName (core.c)
        Name(s) of per-directory config files (default: .htaccess)
        Allowed in *.conf only outside ,  or 
DocumentRoot (core.c)
        Root directory of the document tree
        Allowed in *.conf only outside ,  or 
ErrorDocument (core.c)
        Change responses for HTTP errors
        Allowed in *.conf anywhere and in .htaccess
        when AllowOverride includes FileInfo
AllowOverride (core.c)
        Controls what groups of directives can be configured by per-directory config files
        Allowed in *.conf only inside ,  or 
Options (core.c)
        Set a number of attributes for a given directory
        Allowed in *.conf anywhere and in .htaccess
        when AllowOverride includes Options
DefaultType (core.c)
        the default MIME type for untypable files
        Allowed in *.conf anywhere and in .htaccess
        when AllowOverride includes FileInfo
FileETag (core.c)
        Specify components used to construct a file's ETag
        Allowed in *.conf anywhere and in .htaccess
        when AllowOverride includes FileInfo
EnableMMAP (core.c)
        Controls whether memory-mapping may be used to read files
        Allowed in *.conf anywhere and in .htaccess
        when AllowOverride includes FileInfo
EnableSendfile (core.c)
        Controls whether sendfile may be used to transmit files
        Allowed in *.conf anywhere and in .htaccess
        when AllowOverride includes FileInfo
Protocol (core.c)
        Set the Protocol for httpd to use.
        Allowed in *.conf only outside ,  or 
AcceptFilter (core.c)
        Set the Accept Filter to use for a protocol
        Allowed in *.conf only outside ,  or 
Port (core.c)
        Port was replaced with Listen in Apache 2.0
        Allowed in *.conf only outside ,  or 
HostnameLookups (core.c)
        "on" to enable, "off" to disable reverse DNS lookups, or "double" to enable double-reverse DNS lookups
        Allowed in *.conf anywhere
ServerAdmin (core.c)
        The email address of the server administrator
        Allowed in *.conf only outside ,  or 
ServerName (core.c)
        The hostname and port of the server
        Allowed in *.conf only outside ,  or 
ServerSignature (core.c)
        En-/disable server signature (on|off|email)
        Allowed in *.conf anywhere and in .htaccess
        when AllowOverride isn't None
ServerRoot (core.c)
        Common directory of server-related files (logs, confs, etc.)
        Allowed in *.conf only outside ,  or 
ErrorLog (core.c)
        The filename of the error log
        Allowed in *.conf only outside ,  or 
ServerAlias (core.c)
        A name or names alternately used to access the server
        Allowed in *.conf only outside ,  or 
ServerPath (core.c)
        The pathname the server can be reached at
        Allowed in *.conf only outside ,  or 
Timeout (core.c)
        Timeout duration (sec)
        Allowed in *.conf only outside ,  or 
ContentDigest (core.c)
        whether or not to send a Content-MD5 header with each request
        Allowed in *.conf anywhere and in .htaccess
        when AllowOverride includes Options
UseCanonicalName (core.c)
        How to work out the ServerName : Port when constructing URLs
        Allowed in *.conf anywhere
UseCanonicalPhysicalPort (core.c)
        Whether to use the physical Port when constructing URLs
        Allowed in *.conf anywhere
Include (core.c)
        Name of the config file to be included
        Allowed in *.conf anywhere
LogLevel (core.c)
        Level of verbosity in error logging
        Allowed in *.conf only outside ,  or 
NameVirtualHost (core.c)
        A numeric IP address:port, or the name of a host
        Allowed in *.conf only outside ,  or 
ServerTokens (core.c)
        Determine tokens displayed in the Server: header - Min(imal), OS or Full
        Allowed in *.conf only outside ,  or 
LimitRequestLine (core.c)
        Limit on maximum size of an HTTP request line
        Allowed in *.conf only outside ,  or 
LimitRequestFieldsize (core.c)
        Limit on maximum size of an HTTP request header field
        Allowed in *.conf only outside ,  or 
LimitRequestFields (core.c)
        Limit (0 = unlimited) on max number of header fields in a request message
        Allowed in *.conf only outside ,  or 
LimitRequestBody (core.c)
        Limit (in bytes) on maximum size of request message body
        Allowed in *.conf anywhere and in .htaccess
        when AllowOverride isn't None
LimitXMLRequestBody (core.c)
        Limit (in bytes) on maximum size of an XML-based request body
        Allowed in *.conf anywhere and in .htaccess
        when AllowOverride isn't None
RLimitCPU (core.c)
        Soft/hard limits for max CPU usage in seconds
        Allowed in *.conf anywhere and in .htaccess
        when AllowOverride isn't None
RLimitMEM (core.c)
        Soft/hard limits for max memory usage per process
        Allowed in *.conf anywhere and in .htaccess
        when AllowOverride isn't None
RLimitNPROC (core.c)
        soft/hard limits for max number of processes per uid
        Allowed in *.conf anywhere and in .htaccess
        when AllowOverride isn't None
LimitInternalRecursion (core.c)
        maximum recursion depth of internal redirects and subrequests
        Allowed in *.conf only outside ,  or 
ForceType (core.c)
        a mime type that overrides other configured type
        Allowed in *.conf anywhere and in .htaccess
        when AllowOverride includes FileInfo
SetHandler (core.c)
        a handler name that overrides any other configured handler
        Allowed in *.conf anywhere and in .htaccess
        when AllowOverride includes FileInfo
SetOutputFilter (core.c)
        filter (or ; delimited list of filters) to be run on the request content
        Allowed in *.conf anywhere and in .htaccess
        when AllowOverride includes FileInfo
SetInputFilter (core.c)
        filter (or ; delimited list of filters) to be run on the request body
        Allowed in *.conf anywhere and in .htaccess
        when AllowOverride includes FileInfo
AddOutputFilterByType (core.c)
        output filter name followed by one or more content-types
        Allowed in *.conf anywhere and in .htaccess
        when AllowOverride includes FileInfo
AllowEncodedSlashes (core.c)
        Allow URLs containing '/' encoded as '%2F'
        Allowed in *.conf only outside ,  or 
PidFile (core.c)
        A file for logging the server process ID
        Allowed in *.conf only outside ,  or 
ScoreBoardFile (core.c)
        A file for Apache to maintain runtime process management information
        Allowed in *.conf only outside ,  or 
LockFile (core.c)
        The lockfile used when Apache needs to lock the accept() call
        Allowed in *.conf only outside ,  or 
MaxRequestsPerChild (core.c)
        Maximum number of requests a particular child serves before dying.
        Allowed in *.conf only outside ,  or 
CoreDumpDirectory (core.c)
        The location of the directory Apache changes to before dumping core
        Allowed in *.conf only outside ,  or 
AcceptMutex (core.c)
        Valid accept mutexes for this platform and MPM are: default, fcntl, sysvsem, posixsem, pthread.
        Allowed in *.conf only outside ,  or 
MaxMemFree (core.c)
        Maximum number of 1k blocks a particular childs allocator may hold.
        Allowed in *.conf only outside ,  or 
EnableExceptionHook (core.c)
        Controls whether exception hook may be called after a crash
        Allowed in *.conf only outside ,  or 
TraceEnable (core.c)
        'on' (default), 'off' or 'extended' to trace request body content
        Allowed in *.conf only outside ,  or 
User (prefork.c)
        Effective user id for this server
        Allowed in *.conf only outside ,  or 
Group (prefork.c)
        Effective group id for this server
        Allowed in *.conf only outside ,  or 
ChrootDir (prefork.c)
        The directory to chroot(2) into
        Allowed in *.conf only outside ,  or 
ListenBacklog (prefork.c)
        Maximum length of the queue of pending connections, as used by listen(2)
        Allowed in *.conf only outside ,  or 
Listen (prefork.c)
        A port number or a numeric IP address and a port number, and an optional protocol
        Allowed in *.conf only outside ,  or 
SendBufferSize (prefork.c)
        Send buffer size in bytes
        Allowed in *.conf only outside ,  or 
ReceiveBufferSize (prefork.c)
        Receive buffer size in bytes
        Allowed in *.conf only outside ,  or 
StartServers (prefork.c)
        Number of child processes launched at server startup
        Allowed in *.conf only outside ,  or 
MinSpareServers (prefork.c)
        Minimum number of idle children, to handle request spikes
        Allowed in *.conf only outside ,  or 
MaxSpareServers (prefork.c)
        Maximum number of idle children
        Allowed in *.conf only outside ,  or 
MaxClients (prefork.c)
        Maximum number of children alive at the same time
        Allowed in *.conf only outside ,  or 
ServerLimit (prefork.c)
        Maximum value of MaxClients for this run of Apache
        Allowed in *.conf only outside ,  or 
GracefulShutdownTimeout (prefork.c)
        Maximum time in seconds to wait for child processes to complete transactions during shutdown
        Allowed in *.conf only outside ,  or 
KeepAliveTimeout (http_core.c)
        Keep-Alive timeout duration (sec)
        Allowed in *.conf only outside ,  or 
MaxKeepAliveRequests (http_core.c)
        Maximum number of Keep-Alive requests per connection, or 0 for infinite
        Allowed in *.conf only outside ,  or 
KeepAlive (http_core.c)
        Whether persistent connections should be On or Off
        Allowed in *.conf only outside ,  or 
LoadModule (mod_so.c)
        a module name and the name of a shared object file to load it from
        Allowed in *.conf only outside ,  or 
LoadFile (mod_so.c)
        shared object file or library to load into the server at runtime
        Allowed in *.conf only outside ,  or 


root@MySolaris:/usr/apache2/2.2/bin# ./httpd -t
Syntax OK

root@MySolaris:/usr/apache2/2.2/bin# ./httpd -t -D DUMP_MODULES
Loaded Modules:
 core_module (static)
 mpm_prefork_module (static)
 http_module (static)
 so_module (static)
 authn_file_module (shared)
 authn_dbm_module (shared)
 authn_anon_module (shared)
 authn_dbd_module (shared)
 authn_default_module (shared)
 authz_host_module (shared)
 authz_groupfile_module (shared)
 authz_user_module (shared)
 authz_dbm_module (shared)
 authz_owner_module (shared)
 authnz_ldap_module (shared)
 authz_default_module (shared)
 auth_basic_module (shared)
 auth_digest_module (shared)
 auth_gss_module (shared)
 file_cache_module (shared)
 cache_module (shared)
 disk_cache_module (shared)
 mem_cache_module (shared)
 dbd_module (shared)
 dumpio_module (shared)
 ext_filter_module (shared)
 include_module (shared)
 filter_module (shared)
 substitute_module (shared)
 deflate_module (shared)
 ldap_module (shared)
 log_config_module (shared)
 log_forensic_module (shared)
 logio_module (shared)
 env_module (shared)
 mime_magic_module (shared)
 cern_meta_module (shared)
 expires_module (shared)
 headers_module (shared)
 ident_module (shared)
 usertrack_module (shared)
 unique_id_module (shared)
 setenvif_module (shared)
 version_module (shared)
 proxy_module (shared)
 proxy_connect_module (shared)
 proxy_ftp_module (shared)
 proxy_http_module (shared)
 proxy_ajp_module (shared)
 proxy_balancer_module (shared)
 ssl_module (shared)
 mime_module (shared)
 dav_module (shared)
 status_module (shared)
 autoindex_module (shared)
 asis_module (shared)
 info_module (shared)
 suexec_module (shared)
 cgi_module (shared)
 dav_fs_module (shared)
 vhost_alias_module (shared)
 negotiation_module (shared)
 dir_module (shared)
 imagemap_module (shared)
 actions_module (shared)
 speling_module (shared)
 userdir_module (shared)
 alias_module (shared)
 rewrite_module (shared)
 dtrace_module (shared)
 fcgid_module (shared)
 php5_module (shared)
Syntax OK

root@MySolaris:/usr/apache2/2.2/bin# ./httpd -l
Compiled in modules:
  core.c
  prefork.c
  http_core.c
  mod_so.c

root@MySolaris:/usr/apache2/2.2/bin# ./httpd -t -D DUMP_VHOSTS
VirtualHost configuration:
Syntax OK

root@MySolaris:/usr/apache2/2.2/bin# ./httpd -v
Server version: Apache/2.2.16 (Unix)
Server built:   Oct 12 2010 03:20:32

root@MySolaris:/usr/apache2/2.2/bin# ./httpd -V
Server version: Apache/2.2.16 (Unix)
Server built:   Oct 12 2010 03:20:32
Server's Module Magic Number: 20051115:24
Server loaded:  APR 1.3.9, APR-Util 1.3.9
Compiled using: APR 1.3.9, APR-Util 1.3.9
Architecture:   32-bit
Server MPM:     Prefork
  threaded:     no
    forked:     yes (variable process count)
Server compiled with....
 -D APACHE_MPM_DIR="server/mpm/prefork"
 -D APR_HAS_MMAP
 -D APR_HAVE_IPV6 (IPv4-mapped addresses enabled)
 -D APR_USE_PROC_PTHREAD_SERIALIZE
 -D APR_USE_PTHREAD_SERIALIZE
 -D SINGLE_LISTEN_UNSERIALIZED_ACCEPT
 -D APR_HAS_OTHER_CHILD
 -D AP_HAVE_RELIABLE_PIPED_LOGS
 -D DYNAMIC_MODULE_LIMIT=128
 -D HTTPD_ROOT="/usr/apache2/2.2"
 -D SUEXEC_BIN="/usr/apache2/2.2/bin/suexec"
 -D DEFAULT_PIDLOG="/var/run/apache2/2.2/httpd.pid"
 -D DEFAULT_SCOREBOARD="logs/apache_runtime_status"
 -D DEFAULT_LOCKFILE="/var/run/apache2/2.2/accept.lock"
 -D DEFAULT_ERRORLOG="logs/error_log"
 -D AP_TYPES_CONFIG_FILE="/etc/apache2/2.2/mime.types"
 -D SERVER_CONFIG_FILE="/etc/apache2/2.2/httpd.conf"

root@MySolaris:/usr/apache2/2.2/bin# ./httpd -S
VirtualHost configuration:
Syntax OK

root@MySolaris:/usr/apache2/2.2/bin# ./httpd -M
Loaded Modules:
 core_module (static)
 mpm_prefork_module (static)
 http_module (static)
 so_module (static)
 authn_file_module (shared)
 authn_dbm_module (shared)
 authn_anon_module (shared)
 authn_dbd_module (shared)
 authn_default_module (shared)
 authz_host_module (shared)
 authz_groupfile_module (shared)
 authz_user_module (shared)
 authz_dbm_module (shared)
 authz_owner_module (shared)
 authnz_ldap_module (shared)
 authz_default_module (shared)
 auth_basic_module (shared)
 auth_digest_module (shared)
 auth_gss_module (shared)
 file_cache_module (shared)
 cache_module (shared)
 disk_cache_module (shared)
 mem_cache_module (shared)
 dbd_module (shared)
 dumpio_module (shared)
 ext_filter_module (shared)
 include_module (shared)
 filter_module (shared)
 substitute_module (shared)
 deflate_module (shared)
 ldap_module (shared)
 log_config_module (shared)
 log_forensic_module (shared)
 logio_module (shared)
 env_module (shared)
 mime_magic_module (shared)
 cern_meta_module (shared)
 expires_module (shared)
 headers_module (shared)
 ident_module (shared)
 usertrack_module (shared)
 unique_id_module (shared)
 setenvif_module (shared)
 version_module (shared)
 proxy_module (shared)
 proxy_connect_module (shared)
 proxy_ftp_module (shared)
 proxy_http_module (shared)
 proxy_ajp_module (shared)
 proxy_balancer_module (shared)
 ssl_module (shared)
 mime_module (shared)
 dav_module (shared)
 status_module (shared)
 autoindex_module (shared)
 asis_module (shared)
 info_module (shared)
 suexec_module (shared)
 cgi_module (shared)
 dav_fs_module (shared)
 vhost_alias_module (shared)
 negotiation_module (shared)
 dir_module (shared)
 imagemap_module (shared)
 actions_module (shared)
 speling_module (shared)
 userdir_module (shared)
 alias_module (shared)
 rewrite_module (shared)
 dtrace_module (shared)
 fcgid_module (shared)
 php5_module (shared)
Syntax OK