|
NAME | SYNOPSIS | DESCRIPTION | OPTIONS | EXIT STATUS | SEE ALSO | COLOPHON |
GETENT(1) User Commands GETENT(1)
getent - get entries from Name Service Switch libraries
getent [option]... database key...
The getent command displays entries from databases supported by the
Name Service Switch libraries, which are configured in
/etc/nsswitch.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 identical 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. Enumeration 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 (hostname, 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 display 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.
-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.
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.
nsswitch.conf(5)
This page is part of release 4.12 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)
Pages that refer to this page: nsswitch.conf(5), passwd(5@@shadow-utils), nss-myhostname(8), nss-mymachines(8), nss-systemd(8)