Verifying the NIS/NYS Installation
If everything is fine (as it should be), you should be able to
verify your installation with a few simple commands. Assuming, for
example, your passwd file is being supplied by NIS, the command
should give you the contents of your NIS passwd file. The
(where userid is the login name of an arbitrary user) should
give you the user's entry in the NIS passwd file. The "ypcat" and
"ypmatch" programs should be included with your distribution of
traditional NIS or NYS.
If a user cannot log in, run the following program on the
main(int argc, char *argv)
struct passwd *pwd;
if(argc != 2)
fprintf(stderr,"Usage: getwpnam username\n");
if(pwd != NULL)
printf("user id..: [%d]\n", pwd->pw_uid);
printf("group id.: [%d]\n",pwd->pw_gid);
fprintf(stderr,"User \"%s\" not found!\n",argv);
Running this program with the username as parameter will print
all the information the getpwnam function gives back for this user.
This should show you which entry is incorrect. The most common
problem is, that the password field is overwritten with a "*".
GNU C Library 2.1 (glibc 2.1) comes with a tool called getent.
Use this program instead the above on such a system. You could