Hi, As previously noted on this mailing list, although the GNU C Library provides the getent.c source code, the getent(1) man page is missing from the Linux man-pages project. The existing getent(1) man page found on common Linux distributions is very short, and says very little. I am not sure where it comes from (Debian?), but should really be part of the man-pages project as it is functionality provided by glibc. I hope you will accept the following into the Linux man-pages project. I have written this from scratch to be much more informative and using the latest glibc nss/getent.c as a reference. Best regards, Mark Bannister. ---------- .\" Copyright (c) 2011, Mark R. Bannister <cambridge@xxxxxxxxxxxxxxxxxxxxx> .\" .\" This is free documentation; you can redistribute it and/or .\" modify it under the terms of the GNU General Public License as .\" published by the Free Software Foundation; either version 2 of .\" the License, or (at your option) any later version. .\" .\" The GNU General Public License's references to "object code" .\" and "executables" are to be interpreted as the output of any .\" document formatting or typesetting system, including .\" intermediate and printed output. .\" .\" This manual is distributed in the hope that it will be useful, .\" but WITHOUT ANY WARRANTY; without even the implied warranty of .\" MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the .\" GNU General Public License for more details. .\" .\" You should have received a copy of the GNU General Public .\" License along with this manual; if not, write to the Free .\" Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, .\" USA. .\" .TH GETENT 1 2011-10-31 "Linux" "User Commands" .SH NAME getent \- get entries from Name Service Switch libraries .SH SYNOPSIS .BI "getent " database " [ " key " ... ]" .SH DESCRIPTION Displays entries from databases supported by the Name Service Switch libraries, which are configured in .IR /etc/nsswitch.conf . If one or more .I key is provided, then only the entries that match the supplied keys will be displayed. Otherwise, if no .I key is provided, all entries will be displayed (unless the database does not support enumeration). .LP The .I database may be any supported by the GNU C Library, listed below: .RS 3 .TP 10 .B ahosts When no .I key is provided, uses .BR sethostent (3), .BR gethostent (3) and .BR endhostent (3) to enumerate the hosts database. This is identical to using .BR hosts . When one or more .I key is provided, passes each .I key in succession to .BR getaddrinfo (3) with the address family .BR AF_UNSPEC , enumerating each socket address structure returned. .TP .B ahostsv4 Same as .B ahosts except for the address family .BR AF_INET . .TP .B ahostsv6 Same as .B ahosts except for the address family .BR AF_INET6 . The call to .BR getaddrinfo (3) in this case includes the .B AI_V4MAPPED flag. .TP .B aliases When no .I key is provided, uses .BR setaliasent (3), .BR getaliasent (3) and .BR endaliasent (3) to enumerate the aliases database. When one or more .I key is provided, passes each .I key in succession to .BR getaliasbyname (3) and displays the result. .TP .B ethers When one or more .I key is provided, passes each .I key in succession to .BR ether_aton (3) and .BR ether_hostton (3) until a result is obtained, and displays the result. Enumeration is not supported on .BR ethers , so a .I key must be provided. .TP .B group When no .I key is provided, uses .BR setgrent (3), .BR getgrent (3) and .BR endgrent (3) to enumerate the group database. When one or more .I key is provided, passes each numeric .I key to .BR getgrgid (3) and each non-numeric .I key to .BR getgrnam (3) and displays the result. .TP .B gshadow When no .I key is provided, uses .BR setsgent (3), .BR getsgent (3) and .BR endsgent (3) to enumerate the gshadow database. When one or more .I key is provided, passes each .I key in succession to .BR getsgnam (3) and displays the result. .TP .B hosts When no .I key is provided, uses .BR sethostent (3), .BR gethostent (3) and .BR endhostent (3) to enumerate the hosts database. When one or more .I key is provided, passes each .I key to .BR gethostbyaddr (3) or .BR gethostbyname2 (3), depending on whether a call to .BR inet_pton (3) indicates that the .I key is an IPv6 or IPv4 address or not, and displays the result. .TP .B initgroups When one or more .I key is provided, passes each .I key in succession to .BR getgrouplist (3) and displays the result. Enumeration is not supported on .BR initgroups , so a .I key must be provided. .TP .B netgroup When one .I key is provided, passes the .I key to .BR setnetgrent (3) and, using .BR getnetgrent (3) displays the resulting string triple .RI ( hostname ", " username ", " domainname ). Alternatively, three .I keys may be provided, which are interpreted as the .IR hostname , .I username and .I domainname to match to a netgroup name via .BR innetgr (3). Enumeration is not supported on .BR initgroups , so either one or three .I keys must be provided. .TP .B networks When no .I key is provided, uses .BR setnetent (3), .BR getnetent (3) and .BR endnetent (3) to enumerate the networks database. When one or more .I key is provided, passes each numeric .I key to .BR getnetbyaddr (3) and each non-numeric .I key to .BR getnetbyname (3) and displays the result. .TP .B passwd When no .I key is provided, uses .BR setpwent (3), .BR getpwent (3) and .BR endpwent (3) to enumerate the passwd database. When one or more .I key is provided, passes each numeric .I key to .BR getpwuid (3) and each non-numeric .I key to .BR getpwnam (3) and displays the result. .TP .B protocols When no .I key is provided, uses .BR setprotoent (3), .BR getprotoent (3) and .BR endprotoent (3) to enumerate the protocols database. When one or more .I key is provided, passes each numeric .I key to .BR getprotobynumber (3) and each non-numeric .I key to .BR getprotobyname (3) and displays the result. .TP .B rpc When no .I key is provided, uses .BR setrpcent (3), .BR getrpcent (3) and .BR endrpcent (3) to enumerate the rpc database. When one or more .I key is provided, passes each numeric .I key to .BR getrpcbynumber (3) and each non-numeric .I key to .BR getrpcbyname (3) and displays the result. .TP .B services When no .I key is provided, uses .BR setservent (3), .BR getservent (3) and .BR endservent (3) to enumerate the services database. When one or more .I key is provided, passes each numeric .I key to .BR getservbynumber (3) and each non-numeric .I key to .BR getservbyname (3) and displays the result. .TP .B shadow When no .I key is provided, uses .BR setspent (3), .BR getspent (3) and .BR endspent (3) to enumerate the shadow database. When one or more .I key is provided, passes each .I key in succession to .BR getspnam (3) and displays the result. .RE .SH "EXIT STATUS" One of the following exit values can be returned by .BR getent : .RS 3 .TP 10 .B 0 Command completed successfully. .TP .B 1 Missing arguments, or .I database unknown. .TP .B 2 One or more supplied .I key could not be found in the .IR database . .TP .B 3 Enumeration not supported on this .IR database . .RE .SH "SEE ALSO" .BR nsswitch.conf (5). -- To unsubscribe from this list: send the line "unsubscribe linux-man" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
