NAME

mesg − permit or deny messages to terminal

SYNOPSIS

mesg n
mesg y
mesg g
mesg

DESCRIPTION

The command form mesg n forbids messages via write by revoking non-user write permission on the user’s terminal (see write(1)). The command form mesg g reinstates permissions so that only legitimate commands (such as write(1)) can be used by other users to send messages. mesg y allows any application to send messages to the user’s terminal (that is, without restrictions).  mesg without any other argument reports the current state without changing it. 

RETURN VALUE

mesg returns the following values:

0 Messages are receivable. 

1 Messages are not receivable. 

2 An error occurred. 

EXTERNAL INFLUENCES

Environment Variables

LC_MESSAGES determines the language in which messages are displayed. 

If LC_MESSAGES is not specified in the environment or is set to the empty string, the value of LANG is used as a default for each unspecified or empty variable.  If LANG is not specified or is set to the empty string, a default of "C" (see lang(5)) is used instead of LANG. 

If any internationalization variable contains an invalid setting, mesg behaves as if all internationalization variables are set to "C".  See environ(5).

FILES

/dev/tty*

SEE ALSO

write(1). 

STANDARDS CONFORMANCE

mesg: SVID2, SVID3, XPG2, XPG3, XPG4

Hewlett-Packard Company  —  HP-UX Release 10.20:  July 1996