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53 lines
1.2 KiB
C
53 lines
1.2 KiB
C
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#include <grp.h>
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#include <pwd.h>
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#include <sys/types.h>
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#include <unistd.h>
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#include <stdlib.h>
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int
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main (void)
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{
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uid_t me;
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struct passwd *my_passwd;
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struct group *my_group;
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char **members;
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/* Get information about the user ID. */
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me = getuid ();
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my_passwd = getpwuid (me);
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if (!my_passwd)
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{
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printf ("Couldn't find out about user %d.\n", (int) me);
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exit (EXIT_FAILURE);
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}
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/* Print the information. */
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printf ("I am %s.\n", my_passwd->pw_gecos);
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printf ("My login name is %s.\n", my_passwd->pw_name);
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printf ("My uid is %d.\n", (int) (my_passwd->pw_uid));
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printf ("My home directory is %s.\n", my_passwd->pw_dir);
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printf ("My default shell is %s.\n", my_passwd->pw_shell);
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/* Get information about the default group ID. */
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my_group = getgrgid (my_passwd->pw_gid);
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if (!my_group)
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{
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printf ("Couldn't find out about group %d.\n",
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(int) my_passwd->pw_gid);
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exit (EXIT_FAILURE);
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}
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/* Print the information. */
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printf ("My default group is %s (%d).\n",
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my_group->gr_name, (int) (my_passwd->pw_gid));
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printf ("The members of this group are:\n");
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members = my_group->gr_mem;
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while (*members)
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{
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printf (" %s\n", *(members));
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members++;
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}
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return EXIT_SUCCESS;
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}
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