who: add -a (by Tito)

1 files changed, 4 insertions, 4 deletions

diff --git a/coreutils/who.c b/coreutils/who.c
index 725974425..f336c953c 100644
--- a/coreutils/who.c
+++ b/coreutils/who.c
@@ -46,15 +46,15 @@ int who_main(int argc, char **argv)
         struct utmp *ut;
         struct stat st;
         char *name;
+        unsigned opt;
 
-        if (argc > 1) {
-                bb_show_usage();
-        }
+        opt_complementary = "=0";
+        opt = getopt32(argv, "a");
 
         setutent();
         printf("USER       TTY      IDLE      TIME            HOST\n");
         while ((ut = getutent()) != NULL) {
-                if (ut->ut_user[0] && ut->ut_type == USER_PROCESS) {
+                if (ut->ut_user[0] && (opt || ut->ut_type == USER_PROCESS)) {
                         /* ut->ut_line is device name of tty - "/dev/" */
                         name = concat_path_file("/dev", ut->ut_line);
                         str6[0] = '?';