1 files changed, 44 insertions, 0 deletions
diff --git a/utmp.c b/utmp.c
new file mode 100644
index 0000000..f6bf737
--- /dev/null
+++ b/utmp.c
@@ -0,0 +1,44 @@
+#include <stdio.h>
+#include <utmp.h>
+
+const char * utTypeName(short int foo) {
+    switch (foo) {
+      case EMPTY:
+	return "EMPTY";
+      case RUN_LVL:
+	return "RUN_LVL";
+      case BOOT_TIME:
+	return "BOOT_TIME";
+      case NEW_TIME:
+	return "NEW_TIME";
+      case OLD_TIME:
+	return "OLD_TIME";
+      case INIT_PROCESS:
+	return "INIT_PROCESS";
+      case LOGIN_PROCESS:
+	return "LOGIN_PROCESS";
+      case USER_PROCESS:
+	return "USER_PROCESS";
+      case DEAD_PROCESS:
+	return "DEAD_PROCESS";
+      case ACCOUNTING:
+	return "ACCOUNTING";
+    }
+
+    return "(unknown)";
+}
+
+int main() {
+    struct utmp * ut;
+
+    setutent();
+    while ((ut = getutent())) {
+	if (ut->ut_type == DEAD_PROCESS) continue;
+
+	printf("%-13s %5d /dev/%-5s %-8s %-15s\n", 
+		utTypeName(ut->ut_type), ut->ut_pid, ut->ut_line,
+		*ut->ut_user ? ut->ut_user : "(user)", ut->ut_host);
+    }
+
+    return 0;
+}