получать записи из библиотек переключателей служб имен (get entries from Name Service Switch libraries)
Имя (Name)
getent - get entries from Name Service Switch libraries
Синопсис (Synopsis)
getent [option]... database key...
Описание (Description)
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.
Параметры (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.
Статус выхода (Exit)
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.
Смотри также (See also)
nsswitch.conf(5)
