fix docs of -a option

doc/nethogs.8

@@ -13,6 +13,7 @@ nethogs \- Net top tool grouping bandwidth per process
 .RB [ "\-t" ]
 .RB [ "\-c" ]
 .RB [ "\-p" ]
+.RB [ "\-a" ]
 .RB [ "\-s" ]
 .RI [device(s)]
 .SH DESCRIPTION
@@ -35,6 +36,9 @@ select view mode
 \fB-p\fP
 sniff in promiscious mode (not recommended)
 .TP
+\fB-a\fP
+monitor all devices, even loopback/stopped ones
+.TP
 \fB-t\fP
 tracemode
 .TP

src/main.cpp

@@ -27,7 +27,7 @@ static void help(bool iserror) {
   // output << "usage: nethogs [-V] [-b] [-d seconds] [-t] [-p] [-f (eth|ppp))]
   // [device [device [device ...]]]\n";
   output << "usage: nethogs [-V] [-h] [-b] [-d seconds] [-v mode] [-c count] "
-            "[-t] [-p] [-s] [device [device [device ...]]]\n";
+            "[-t] [-p] [-s] [-a] [device [device [device ...]]]\n";
   output << "		-V : prints version.\n";
   output << "		-h : prints this help.\n";
   output << "		-b : bughunt mode - implies tracemode.\n";
@@ -133,7 +133,7 @@ int main(int argc, char **argv) {
   bool all = false;
 
   int opt;
-  while ((opt = getopt(argc, argv, "Vahbtpd:v:c:sa")) != -1) {
+  while ((opt = getopt(argc, argv, "Vhbtpsd:v:c:a")) != -1) {
     switch (opt) {
     case 'V':
       versiondisplay();