05-20-2009
List ALL users in a Unix Group (Primary and Secondary)
Is there a command or better combination of cmds that will give me the list of Unix users in a particular Unix group whether their primary group is that group in question (information stored in /etc/passwd) or they are in a secondary group (information stored in /etc/group).
So far all I got is a combination of the following:
groupName=XXXXX
groupId=$( getent group | egrep "^${groupName}:" | cut -d: -f3 )
getent passwd | egrep "^.*:.*:.*:${groupId}" | cut -f1 -d:
getent group | egrep "^${groupName}:" | cut -f4 -d:
(Yeah for all you NIS and/or LDAP guys, I did use the getent commands)
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LEARN ABOUT DEBIAN
cpg_membership_get
CPG_MEMBERSHIP_GET(3) Corosync Cluster Engine Programmer's Manual CPG_MEMBERSHIP_GET(3)
NAME
cpg_membership_get - Returns a list of members of a CPG group
SYNOPSIS
#include <corosync/cpg.h>
int cpg_membership_get(cpg_handle_t handle, struct cpg_name *groupName, struct cpg_address *member_list, int *member_list_entries);
DESCRIPTION
The cpg_membership_get function is used to determine the current processes in the configuration. You probably will not need to call this
function much as one of the first confchg callbacks you will get will be from the cpg_join() function containing your process. The argu-
ment handle is used to reference the cpg instantiation. The argument groupName will return the name of the group The argument member_list
will return the list of processors in the current membership. The argument member_list_entries should be set with the size of member_list
and will return the size of the member_list after return from the function.
ERRORS
The errors are undocumented.
SEE ALSO
cpg_overview(8), cpg_initialize(3), cpg_finalize(3), cpg_fd_get(3), cpg_dispatch(3), cpg_join(3), cpg_leave(3), cpg_mcast_joined(3),
cpg_membership_get(3) cpg_zcb_alloc(3) cpg_zcb_free(3) cpg_zcb_mcast_joined(3) cpg_context_get(3) cpg_context_set(3) cpg_local_get(3)
corosync Man Page 2006-02-06 CPG_MEMBERSHIP_GET(3)