1 files changed, 10 insertions, 2 deletions

diff --git a/slock.c b/slock.c
index 6be8f22..ddf1074 100644
--- a/slock.c
+++ b/slock.c
@@ -289,7 +289,7 @@ lockscreen(Display *dpy, int screen)
 static void
 usage(void)
 {
-        fprintf(stderr, "usage: slock [-v]\n");
+        fprintf(stderr, "usage: slock [-v|POST_LOCK_CMD]\n");
         exit(1);
 }
 
@@ -303,7 +303,8 @@ main(int argc, char **argv) {
 
         if ((argc == 2) && !strcmp("-v", argv[1]))
                 die("slock-%s, © 2006-2015 slock engineers\n", VERSION);
-        else if (argc != 1)
+
+        if ((argc == 2) && !strcmp("-h", argv[1]))
                 usage();
 
 #ifdef __linux__
@@ -339,6 +340,13 @@ main(int argc, char **argv) {
                 return 1;
         }
 
+        if (argc >= 2 && fork() == 0) {
+                if (dpy)
+                        close(ConnectionNumber(dpy));
+                execvp(argv[1], argv+1);
+                die("slock: execvp %s failed: %s\n", argv[1], strerror(errno));
+        }
+
         /* Everything is now blank. Now wait for the correct password. */
 #ifdef HAVE_BSD_AUTH
         readpw(dpy);