Visit The New, Modern Unix Linux Community

Linux and UNIX Man Pages

Test Your Knowledge in Computers #356
Difficulty: Medium
ibfawk is a very small, function-only, reentrant, embeddable interpreter written in PHP.
True or False?
Linux & Unix Commands - Search Man Pages

wall(1) [centos man page]

WALL(1) 							Linux User's Manual							   WALL(1)

NAME
wall -- send a message to everybody's terminal. SYNOPSIS
wall [-n] [ message ] DESCRIPTION
Wall sends a message to everybody logged in with their mesg(1) permission set to yes. The message can be given as an argument to wall, or it can be sent to wall's standard input. When using the standard input from a terminal, the message should be terminated with the EOF key (usually Control-D). The length of the message is limited to 20 lines. For every invocation of wall a notification will be written to syslog, with facility LOG_USER and level LOG_INFO. OPTIONS
-n Suppresses the normal banner printed by wall, changing it to "Remote broadcast message". This option is only available for root if wall is installed set-group-id, and is used by rpc.walld(8). ENVIRONMENT
Wall ignores the TZ variable - the time printed in the banner is based on the system's local time. SEE ALSO
mesg(1), rpc.rwalld(8). AUTHOR
Miquel van Smoorenburg, miquels@cistron.nl 15 April 2003 WALL(1)

Check Out this Related Man Page

WALL(1)                                                            User Commands                                                           WALL(1)

NAME
wall - write a message to all users SYNOPSIS
wall [-n] [-t timeout] [-g group] [message | file] DESCRIPTION
wall displays a message, or the contents of a file, or otherwise its standard input, on the terminals of all currently logged in users. The command will wrap lines that are longer than 79 characters. Short lines are whitespace padded to have 79 characters. The command will always put a carriage return and new line at the end of each line. Only the superuser can write on the terminals of users who have chosen to deny messages or are using a program which automatically denies messages. Reading from a file is refused when the invoker is not superuser and the program is set-user-ID or set-group-ID. OPTIONS
-n, --nobanner Suppress the banner. -t, --timeout timeout Abandon the write attempt to the terminals after timeout seconds. This timeout must be a positive integer. The default value is 300 seconds, which is a legacy from the time when people ran terminals over modem lines. -g, --group group Limit printing message to members of group defined as a group argument. The argument can be group name or GID. -V, --version Display version information and exit. -h, --help Display help text and exit. NOTES
Some sessions, such as wdm, that have in the beginning of utmp(5) ut_type data a ':' character will not get the message from wall. This is done to avoid write errors. SEE ALSO
mesg(1), talk(1), write(1), shutdown(8) HISTORY
A wall command appeared in Version 7 AT&T UNIX. AVAILABILITY
The wall command is part of the util-linux package and is available from Linux Kernel Archive <https://www.kernel.org/pub/linux/utils/util- linux/>. util-linux August 2013 WALL(1)

15 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

wall

is there a command to send all terminals a message. i tired wall, but it only sends the message to who ever is logged in at a terminal. i need a command to send to every terminal no matter if someone is logged in or not. Thanks! -The DJ (11 Replies)
Discussion started by: djatwork
11 Replies

2. UNIX for Dummies Questions & Answers

How can I deny messaging which use "wall" to send message out?

Dear all, How can I deny messaging which use "wall" command to send message out? regards Wilson (7 Replies)
Discussion started by: wilsonchan1000
7 Replies

3. Shell Programming and Scripting

using the wall or write cmd

Hi all, i'm trying to generate a "pop up window" incorporating either the write or wall command or both. Is such a thing possible ? thanks simon2000 (2 Replies)
Discussion started by: simon2000
2 Replies

4. HP-UX

HP-UX / Tape Library Communication Problems

Hi All, Hoping that you'll be able to help out on - I've a problem occuring in our backups that's driving me up the wall. I've got an HP-UX Visualise 6500 as below: ================================ root # uname -a HP-UX <NAME> B.11.00 A 9000/785 2005956095 two-user license... (2 Replies)
Discussion started by: geralex
2 Replies

5. UNIX for Advanced & Expert Users

Cron wall message problem

Operating system sun solaris 5.8 My problem is : crontab -e 15 16 * * * /bckscripts/oo vi /bcscripts/oo = wall " stop backup " the system at the 16:15 all day time doesn't display message " stop backup " What's the problem ??? i'am root user the follow is the root dir... (2 Replies)
Discussion started by: tt155
2 Replies

6. UNIX for Dummies Questions & Answers

Can I search columns and print lines?

Hi. First post here. I'm relatively new to UNIX (Solaris8) and writing my first real script, but I seem to have hit a brick wall. The odd thing is that it seems like it should be a simple task....but not with UNIX apparently. I've got a large text file: 14000 lines with 10 columns. I want... (2 Replies)
Discussion started by: Ant1815
2 Replies

7. UNIX for Advanced & Expert Users

To send a message to another system

How to send a message to another unix terminal along with the date specified (4 Replies)
Discussion started by: aajan
4 Replies

8. UNIX for Advanced & Expert Users

Doing Checks on a file

I have a process that I am trying to provide a solution for and have hit a brick wall and would like some pointers in the right direction. Basically on a daily basis a report is automatically generated in a CSV format (FIRST.CSV) which includes codes and amounts in the following format: ... (6 Replies)
Discussion started by: SAMZ
6 Replies

9. Fedora

wall and write commands are not working

hi friends i am using fedora linux operating system on the server and two clients(with windows os) are connected to it(server ).but here wall and write cmds are not working to send messages from one system to another system . pls help me (4 Replies)
Discussion started by: sankar_vitam
4 Replies

10. Red Hat

[help] how to send wall/broadcast message to all clients

Hi, as per title, please help me.. I use command wall host1 host2 hellowwwww but it only receive in the host1.. how can I send this to all the clients.. I want this 1 server to send to all the clients.. or is there any program that I can use? I know this openfire, but seems complicated since... (5 Replies)
Discussion started by: flekzout
5 Replies

11. Shell Programming and Scripting

Cutting a file with multiple delimiters into columns

Hi All I have recently had to start using Unix for work and I have hit brick wall with this prob.... I have a file that goes a little something like this.... EUR;EUR;EUR:USD:USD;USD;;;EUR/USD;XAU/AUD;XAU/EUR;XAU/AUD,GBP/BOB,UAD/XAU;;;1.11;2.22;3.33;4.44;5.55;6.66;;; is it possible to... (7 Replies)
Discussion started by: luckycharm
7 Replies

12. Cybersecurity

How can you send a file over Ip.NOT EMAIL

So I was just wondering... Is there a way to send a file directly to the computer..... Ive never gotten the answer and I want to know how, I keep running in to a wall :wall:. Why you may ask, well really for security reasons due to the fact that if this is done via a port I want to make sure to... (3 Replies)
Discussion started by: orszhak
3 Replies

13. Shell Programming and Scripting

Problems with "write" and "wall"

Hello, I am using VirtualBox to simulate a small network with two Linux computers, the host is Mac OS X. My problem is that I can't send "write" and "wall" messages from the host to one of those Linux computers. Here is what works: - The virtual Linux computer answers "ping" messages that have... (5 Replies)
Discussion started by: 123_abc
5 Replies

14. Shell Programming and Scripting

awk Arrays

So I'm back once again beating my head off a wall trying to figure out how to get this to work. My end goal is to take input such as what's below, which will be capture in real time with a tail -f from a file or piped output from another command: ... (5 Replies)
Discussion started by: ShadowBlade72
5 Replies

15. Shell Programming and Scripting

Wall command with nice text formatting

with using wall command, how can i have a carriage return in my broadcast message. i try to broadcast from a file, i were to use "cat myfile | wall" for broadcasting. but when the message broadcast somehow the format run away. this the text in my file: line 1 line 2 line 3 when broadcast ... (3 Replies)
Discussion started by: lsy
3 Replies

Featured Tech Videos