Give Tethereal a "-D" flag, inspired by WinPcap's "-D" flag, which

prints a list of all network interfaces it found on which it can capture
(the same list as the one that shows up in the "Interface" combo box in
Ethereal's "Capture Preferences" dialog).

svn path=/trunk/; revision=3194

1 files changed, 10 insertions, 0 deletions

diff --git a/doc/tethereal.pod.template b/doc/tethereal.pod.template
index 95b713d0f2..001277130b 100644
--- a/doc/tethereal.pod.template
+++ b/doc/tethereal.pod.template
@@ -7,6 +7,7 @@ Tethereal - Dump and analyze network traffic
 
 B<tethereal>
 S<[ B<-c> count ]>
+S<[ B<-D> ]>
 S<[ B<-f> capture filter expression ]>
 S<[ B<-F> file format ]>
 S<[ B<-h> ]>
@@ -108,6 +109,15 @@ B<-r> flag was specified).
 Sets the default number of packets to read when capturing live
 data.
 
+=item -D
+
+Prints a list of the interfaces on which B<Tethereal> can capture, and
+exits.  Note that "can capture" means that B<Tethereal> was able to open
+that device to do a live capture; if, on your system, a program doing a
+network capture must be run from an account with special privileges (for
+example, as root), then, if B<Tethereal> is run with the B<-D> flag and
+is not run from such an account, it will not list any interfaces.
+
 =item -f
 
 Sets the capture filter expression.