TALK(1) BSD General Commands Manual TALK(1)NAMEtalk — talk to another user
SYNOPSIStalk person [ttyname]
The talk utility is a visual communication program which copies lines
from your terminal to that of another user.
person If you wish to talk to someone on your own machine, then person
is just the person's login name. If you wish to talk to a user
on another host, then person is of the form ‘user@host’ or
‘host!user’ or ‘host:user’.
ttyname If you wish to talk to a user who is logged in more than once,
the ttyname argument may be used to indicate the appropriate
terminal name, where ttyname is of the form ‘ttyXX’.
When first called, talk sends the message
Message from TalkDaemon@his_machine...
talk: connection requested by your_name@your_machine.
talk: respond with: talk your_name@your_machine
to the user you wish to talk to. At this point, the recipient of the
message should reply by typing
It does not matter from which machine the recipient replies, as long as
his login-name is the same. Once communication is established, the two
parties may type simultaneously, with their output appearing in separate
windows. Typing control-L ‘^L’ will cause the screen to be reprinted.
Typing control-D ‘^D’ will clear both parts of your screen to be cleared,
while the control-D character will be sent to the remote side (and just
displayed by this talk client). Your erase, kill, and word kill charac‐
ters will behave normally. To exit, just type your interrupt character;
talk then moves the cursor to the bottom of the screen and restores the
terminal to its previous state.
Permission to talk may be denied or granted by use of the mesg(1) com‐
mand. At the outset talking is allowed.
/etc/hosts to find the recipient's machine
/var/run/utmp to find the recipient's tty
SEE ALSOmail(1), mesg(1), wall(1), who(1), write(1), talkd(8)HISTORY
The talk command appeared in 4.2BSD.
In FreeBSD 5.3, the default behaviour of talk was changed to treat local-
to-local talk requests as originating and terminating at localhost.
Before this change, it was required that the hostname (as per
gethostname(3)) resolved to a valid IPv4 address (via gethostbyname(3)),
making talk unsuitable for use in configurations where talkd(8) was bound
to the loopback interface (normally for security reasons).
The version of talk released with 4.3BSD uses a protocol that is incom‐
patible with the protocol used in the version released with 4.2BSD.
Multibyte characters are not recognized.
BSD July 3, 2004 BSD