HP-UX Reference (11i v1 00/12) - 1M System Administration Commands N-Z (vol 4)

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STANDARD Printed by: Nora Chuang [nchuang] STANDARD

/build/1111/BRICK/man1m/naaagt.1m

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wall(1M) wall(1M)

NAME

wall - write message to all users

SYNOPSIS

/usr/sbin/wall [-ggroupname][ﬁle]

/usr/sbin/cwall [-ggroupname][ﬁle]

DESCRIPTION

Without arguments, the wall command reads a message from standard input until end-of-ﬁle. Then it

sends this message to all currently logged-in users preceded by:

Broadcast Message from ...

If the -ggroupname option is speciﬁed, wall sends the message to all currently logged-in groupname

members (as speciﬁed in /etc/group) preceded by:

Broadcast Message from ... to group groupname

If ﬁle is speciﬁed, wall reads ﬁle instead of standard input.

wall is typically used to warn all users prior to shutting down the system.

The sender must have appropriate privileges to override any protections the users may have invoked (see

mesg(1)).

wall has timing delays, and takes at least 30 seconds to complete.

You must have appropriate privileges to override any protections users may have invoked (see mesg(1)).

EXTERNAL INFLUENCES

International Code Set Support

Single- and multibyte character code sets are supported.

DIAGNOSTICS

Cannot send to ...

The open on a user’s tty ﬁle failed.

WARNINGS

The wall command will be WITHDRAWN from X/Open standard and may not be portable to other

vendor’s platforms.

AUTHOR

wall was developed by AT&T and HP.

FILES

/dev/tty*