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.Dd Februar 17, 1995
.Dt WATCH 8
.Os
.Sh NAME
watch - tty snoop watching utility.
.Sh SYNOPSIS
watch [-ciot] [<tty name>]
.Sh DESCRIPTION
watch utility allows user to see all data coming to the tty,almost
the same way as user on this tty.
Only root can run watch.
The following options are available:
-c Reconnect on close. When tty on which watching was made closed,
utility will automatically reattach itself to the same tty.
By default utility will ask user to enter new tty name if running
in interactive mode or exit while non-interactive.
-i Force interactive mode.Interactive mode is a default if utility
started from tty. If output redirected to file, you can still force
it into interactive mode by this option.
-o Reconnect on overflow. The behaviour of utility on overflow is same
as for tty close. For more info see snp(4).
-t Timestamp.Print date and time each time, tty watching started.
The <tty name> is one of following types:
ttyp?,ttyq?,ttyr? - pseudo tty devices.
ttyv? - virtual ttys (syscons).
tty0?,ttyd? - serial lines.
Each name can be preceeded by "/dev/".
Also recognized:
pty[NUM] - pseudotty's.
vty[NUM] - virtual ttys.
sio[NUM] - serial lines.
While running interactive, all user input discarded except :
Ctrl+C - Exit watch.
Ctrl+X - Change attached tty.
Ctrl+W - Clear screen.
.Sh SEE ALSO
snp(4),pty(4),sio(4)
.Sh BUGS
No terminal emulation involved,all user output comes to the screen as-is.
.Sh HISTORY
FreeBSD 2.1,By Ugen J.S.Antsilevich <ugen@NetVision.net.il>
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