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-rw-r--r--share/man/man4/snp.47
-rw-r--r--usr.sbin/watch/watch.814
2 files changed, 19 insertions, 2 deletions
diff --git a/share/man/man4/snp.4 b/share/man/man4/snp.4
index 735c2b3..e35cce2 100644
--- a/share/man/man4/snp.4
+++ b/share/man/man4/snp.4
@@ -18,6 +18,12 @@
.Sh DESCRIPTION
/dev/snp? are snoop devices which allow user to attach to any tty
and watch activities on it.
+The kernel must be compiled with
+.Cd "device snp" ,
+or the
+.Nm
+device must be loaded,
+for these devices to be available.
.Pp
To associate a given
.Nm
@@ -50,6 +56,7 @@ and detached.
.Sh SEE ALSO
.Xr pty 4 ,
.Xr sio 4 ,
+.Xr kldload 8 ,
.Xr watch 8
.Sh RESTRICTIONS
Only the superuser may access the
diff --git a/usr.sbin/watch/watch.8 b/usr.sbin/watch/watch.8
index 5ab09a6..f855ec1 100644
--- a/usr.sbin/watch/watch.8
+++ b/usr.sbin/watch/watch.8
@@ -14,7 +14,16 @@
.Op Ar tty
.Sh DESCRIPTION
.Nm Watch
-allows the user to examine all data coming through a specified tty.
+allows the user to examine all data coming through a specified tty
+using the
+.Xr snp 4
+device.
+If the
+.Xr snp 4
+device is not available,
+.Nm
+will attempt to load the module
+.Pq Nm snp .
.Nm Watch
writes to standard output.
.Pp
@@ -91,7 +100,8 @@ control-X is passed to the terminal as with other control characters.
.Sh SEE ALSO
.Xr pty 4 ,
.Xr sio 4 ,
-.Xr snp 4
+.Xr snp 4 ,
+.Xr kldload 8
.Sh BUGS
No terminal emulation is performed.
All user output is reproduced as-is.
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