GETENT(1) |
User Commands |
GETENT(1) |
NAME
getent - get entries from Name Service Switch libraries
SYNOPSIS
getent
database [
key ...]
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.
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 3.53 of the Linux
man-pages project. A description of the project, and information about reporting bugs, can be found at http://www.kernel.org/doc/man-pages/.