New applet, fuser, from Tony J. White.  (Needs some cleanup.)
diff --git a/include/applets.h b/include/applets.h
index 883e559..2b2c45d 100644
--- a/include/applets.h
+++ b/include/applets.h
@@ -258,6 +258,9 @@
 #ifdef CONFIG_FTPPUT
 	APPLET(ftpput, ftpgetput_main, _BB_DIR_USR_BIN, _BB_SUID_NEVER)
 #endif
+#ifdef CONFIG_FUSER
+	APPLET(fuser, fuser_main, _BB_DIR_USR_BIN, _BB_SUID_NEVER)
+#endif
 #ifdef CONFIG_GETOPT
 	APPLET(getopt, getopt_main, _BB_DIR_BIN, _BB_SUID_NEVER)
 #endif
diff --git a/include/usage.h b/include/usage.h
index 69c50b9..79a61d2 100644
--- a/include/usage.h
+++ b/include/usage.h
@@ -841,6 +841,16 @@
 	"\t-p, --password         Password to be used\n" \
 	"\t-P, --port             Port number to be used"
 
+#define fuser_trivial_usage \
+	"[options] file OR port/proto"
+#define fuser_full_usage \
+	"Options:\n" \
+	"\t-m         Show all processes on the same mounted fs\n" \
+	"\t-k         Kill all processes that match.\n" \
+	"\t-s         Don't print or kill anything.\n" \
+	"\t-4         When using port/proto only search IPv4 space\n" \
+	"\t-6         When using port/proto only search IPv6 space\n" \
+	"\t-SIGNAL    When used with -k, this signal will be used to kill\n" 
 #define getopt_trivial_usage \
 	"[OPTIONS]..."
 #define getopt_full_usage \