who: add -a (by Tito)

2 files changed, 8 insertions, 6 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] = '?';
diff --git a/include/usage.h b/include/usage.h
index 953645ba0..592316ace 100644
--- a/include/usage.h
+++ b/include/usage.h
@@ -4112,9 +4112,11 @@ USE_FEATURE_RUN_PARTS_FANCY("\n	-l	Prints names of all matching files even when
        "/bin/login\n"
 
 #define who_trivial_usage \
-       " "
+       "[-a]"
 #define who_full_usage \
-       "Print the current user names and related information"
+       "Show who is logged on" \
+       "\n\nOptions:\n" \
+       "        -a      show all"
 
 #define whoami_trivial_usage \
        ""