GETENT(1)							   User Commands							 GETENT(1)

NAME

       getent - get entries from Name Service Switch libraries

SYNOPSIS

       getent [option]... database key...

DESCRIPTION

       The  getent  command  displays  entries	from  databases  supported by the Name Service Switch libraries, which are configured in /etc/nss-
       witch.conf.  If one or more key arguments are provided, then only the entries that match the supplied keys will be  displayed.	Otherwise,
       if no key is provided, all entries will be displayed (unless the database does not support enumeration).

       The database may be any of those supported by the GNU C Library, listed below:

	  ahosts    When no key is provided, use sethostent(3), gethostent(3), and endhostent(3) to enumerate the hosts database.  This is identi-
		    cal to using hosts.  When one or more key arguments are provided, pass each key  in  succession  to  getaddrinfo(3)  with  the
		    address family AF_UNSPEC, enumerating each socket address structure returned.

	  ahostsv4  Same as ahosts, but use the address family AF_INET.

	  ahostsv6  Same as ahosts, but use the address family AF_INET6.  The call to getaddrinfo(3) in this case includes the AI_V4MAPPED flag.

	  aliases   When  no  key is provided, use setaliasent(3), getaliasent(3), and endaliasent(3) to enumerate the aliases database.  When one
		    or more key arguments are provided, pass each key in succession to getaliasbyname(3) and display the result.

	  ethers    When one or more key arguments are provided, pass each key in succession to ether_aton(3) and ether_hostton(3) until a  result
		    is obtained, and display the result.  Enumeration is not supported on ethers, so a key must be provided.

	  group     When  no key is provided, use setgrent(3), getgrent(3), and endgrent(3) to enumerate the group database.  When one or more key
		    arguments are provided, pass each numeric key to getgrgid(3) and each nonnumeric key to getgrnam(3) and display the result.

	  gshadow   When no key is provided, use setsgent(3), getsgent(3), and endsgent(3) to enumerate the gshadow database.  When  one  or  more
		    key arguments are provided, pass each key in succession to getsgnam(3) and display the result.

	  hosts     When  no  key  is  provided, use sethostent(3), gethostent(3), and endhostent(3) to enumerate the hosts database.  When one or
		    more key arguments are provided, pass each key to gethostbyaddr(3) or  gethostbyname2(3),  depending  on  whether  a  call	to
		    inet_pton(3) indicates that the key is an IPv6 or IPv4 address or not, and display the result.

	  initgroups
		    When  one or more key arguments are provided, pass each key in succession to getgrouplist(3) and display the result.  Enumera-
		    tion is not supported on initgroups, so a key must be provided.

	  netgroup  When one key is provided, pass the key to setnetgrent(3) and, using getnetgrent(3) display the resulting string triple  (host-
		    name,  username,  domainname).  Alternatively, three keys may be provided, which are interpreted as the hostname, username and
		    domainname to match to a netgroup name via innetgr(3).  Enumeration is not supported on netgroup, so either one or three  keys
		    must be provided.

	  networks  When  no  key  is  provided, use setnetent(3), getnetent(3), and endnetent(3) to enumerate the networks database.  When one or
		    more key arguments are provided, pass each numeric key to getnetbyaddr(3) and each nonnumeric key to getnetbyname(3) and  dis-
		    play the result.

	  passwd    When no key is provided, use setpwent(3), getpwent(3), and endpwent(3) to enumerate the passwd database.  When one or more key
		    arguments are provided, pass each numeric key to getpwuid(3) and each nonnumeric key to getpwnam(3) and display the result.

	  protocols When no key is provided, use setprotoent(3), getprotoent(3), and endprotoent(3) to enumerate the protocols database.  When one
		    or	more key arguments are provided, pass each numeric key to getprotobynumber(3) and each nonnumeric key to getprotobyname(3)
		    and display the result.

	  rpc	    When no key is provided, use setrpcent(3), getrpcent(3), and endrpcent(3) to enumerate the rpc database.  When one or more key
		    arguments  are provided, pass each numeric key to getrpcbynumber(3) and each nonnumeric key to getrpcbyname(3) and display the
		    result.

	  services  When no key is provided, use setservent(3), getservent(3), and endservent(3) to enumerate the services database.  When one	or
		    more  key  arguments are provided, pass each numeric key to getservbynumber(3) and each nonnumeric key to getservbyname(3) and
		    display the result.

	  shadow    When no key is provided, use setspent(3), getspent(3), and endspent(3) to enumerate the shadow database.  When one or more key
		    arguments are provided, pass each key in succession to getspnam(3) and display the result.

OPTIONS

       -s service, --service service
	      Override all databases with the specified service.  (Since glibc 2.2.5.)

       -s database:service, --service database:service
	      Override	only specified databases with the specified service.  The option may be used multiple times, but only the last service for
	      each database will be used.  (Since glibc 2.4.)

       -i, --no-idn
	      Disables IDN encoding in lookups for ahosts/getaddrinfo(3) (Since glibc-2.13.)

       -?, --help
	      Print a usage summary and exit.

       --usage
	      Print a short usage summary and exit.

       -V, --version
	      Print the version number, license, and disclaimer of warranty for getent.

EXIT STATUS

       One of the following exit values can be returned by getent:

	  0	    Command completed successfully.

	  1	    Missing arguments, or database unknown.

	  2	    One or more supplied key could not be found in the database.

	  3	    Enumeration not supported on this database.

SEE ALSO

       nsswitch.conf(5)

COLOPHON

       This page is part of release 4.15 of the Linux man-pages project.  A description of the project, information about reporting bugs, and  the
       latest version of this page, can be found at https://www.kernel.org/doc/man-pages/.

Linux								    2015-04-19								 GETENT(1)