HP UX Operating Systems 556

mesg(1)

NAME

mesg - permit or deny messages to terminal

SYNOPSIS

mesg [[-] g ] [[-] y ] [[-] n ] mesg

DESCRIPTION

The command form mesg [-] n forbids messages via write by revoking write permission to users without appropriate privilege on the user's terminal (see write(1)). The command form mesg [-] g reinstates permission so that only legitimate commands (such as write(1)) can be used by other users to send messages. mesg [-] y allows applications such as write or talk 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:

0Messages are receivable.

1Messages are not receivable.

2An error occurred.

EXTERNAL INFLUENCES

Environment Variables

LC_MESSAGES determines the language in which messages are displayed.

If LC_MESSAGES is not speci®ed in the environment or is set to the empty string, the value of LANG is used as a default for each unspeci®ed or empty variable. If LANG is not speci®ed 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*