Add interface name filtering via 'match' cmd.

Add 'pps' cmd for switching beetween interface packets/bytes statistics.

Submitted by:	vsevolod
MFC after:	2 weeks

1 files changed, 22 insertions, 0 deletions

diff --git a/usr.bin/systat/systat.1 b/usr.bin/systat/systat.1
index 1b142092270c..7637673c4350 100644
--- a/usr.bin/systat/systat.1
+++ b/usr.bin/systat/systat.1
@@ -511,6 +511,28 @@ Modify the scale used to display the current and peak traffic over all
 interfaces.
 The following units are recognised: kbit, kbyte, mbit,
 mbyte, gbit, gbyte and auto.
+.It Cm pps
+Show statistics in packets per second instead of bytes/bits per second.
+A subsequent call of 
+.Ic pps 
+switches this mode off.
+.It Cm match Op Ar patterns
+Display only interfaces that match pattern provided as an argument. 
+Patterns should be in shell syntax separated by whitespaces or commas. 
+If this command is called without arguments then all interfaces are displayed.
+For example:
+.Pp
+.Dl match em0, bge1
+.Pp
+This will display em0 and bge1 interfaces.
+.Pp
+.Dl match em*, bge*, lo0
+.Pp
+This will display all 
+.Ic em 
+interfaces, all
+.Ic bge
+interfaces and the loopback interface.
 .El
 .El
 .Pp