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amin(1) [centos man page]

AMIN(1)                                                       General Commands Manual                                                      AMIN(1)

NAME
amin - notify writers that you are busy SYNOPSIS
amin [-ynesp] command [args...] DESCRIPTION
Amin is used when you don't want to be written while running a command. It runs the command given normally. If your message permissions (see mesg(1)) are off, it does nothing much else. If your messages are on, people writing you with write(1) will be warned that you are running that command and will be given the opportunity to change their minds about writing you. The -n option may be used to turn your messages entirely off for the duration of the execution of command. People writing you will get "Permission denied". The -y option turns your message permissions on for the duration of the execution of the command. The -e may be used after either -n or -y to indicate that the logins listed in the .yeswrite or the .nowrite files respectively are exceptions to the message permissions set. The default is -s which leaves your message permissions in their original state. In any case, after the command is com- plete, your permissions will be restored to the original state. The -p flag causes all telegrams sent to you while the command is running to be saved. They are displayed as soon as the command is com- plete. If used with the -n flag, writes are refused, but telegrams are still saved. If you have designated yourself as a helper, you will still be marked on the finger(1) output as a helper while you are running amin but people doing ``write help'' will not be connected to you, even if you have the helper flag set to ``Y''. AUTHOR
Jan Wolter FILES
/etc/wrttmp to find message permissions /etc/utmp to find user SEE ALSO
mesg(1), finger(1), write(1), huh(1). 7th Edition July 1, 1991 AMIN(1)

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mesg(1) 						      General Commands Manual							   mesg(1)

NAME
mesg - Permits or refuses write messages SYNOPSIS
mesg [y | n ] [Tru64 UNIX] The following format is supported for backward compatibility: mesg [[-]y[es] | [-]n[o] ] STANDARDS
Interfaces documented on this reference page conform to industry standards as follows: mesg: XCU5.0 Refer to the standards(5) reference page for more information about industry standards and associated tags. OPERANDS
Grants permission to other users to send messages to the terminal device. [Tru64 UNIX] You can optionally include a - (hyphen) before y, include es after y, or both. Denies permission to other users to send messages to the terminal device. [Tru64 UNIX] You can optionally include a - (hyphen) before n, include o after n, or both. DESCRIPTION
The mesg command controls whether other users on the system can send messages to you with the talk and write commands. Called without arguments, mesg displays the current terminal message permission setting. [Tru64 UNIX] The shell start-up procedure disallows messages by default. You can override this default action by including the line mesg y in your $HOME/.profile (sh), (csh), or (csh) file. Note [Tru64 UNIX] This default setting described for the shell start-up procedure message permissions assumes that the shell is one started as part of a login session. If the shell got started by some other means, the default depends on what that other program has done. [Tru64 UNIX] Any user can send messages with write if the receiving user has enabled messages. A user with the sysadmin command autho- rization can send messages to any terminal. The terminal device affected is determined by searching for the first terminal in the sequence of devices associated with standard input, standard output, and standard error, respectively. (In other words, the affected device is not the same as the controlling terminal for the session.) [Tru64 UNIX] Message permission has no effect on messages delivered through the electronic mail system. [Tru64 UNIX] If you add mesg y to your $HOME/.profile, you will be able to receive messages from other users via the write command or the talk command. If you add mesg n to your $HOME/.profile, you will not be able to receive messages from other users via the write command or the talk command. The mesg command also accepts the current locale's equivalent of yes and no. These equivalents are determined by the setting of the LC_MESSAGES environment variable. The usage message displays the current locale's equivalent of yes and no. Security Restrictions [Tru64 UNIX] In the trusted configuration of the system, all terminal devices have owner set to the login user and group set to the pseu- dogroup tty. The login command sets terminal modes to 0600 at login time, so you must explicitly use mesg y to enable access from unautho- rized users. NOTES
[Tru64 UNIX] If your current locale defines settings other than yes or no, the mesg command does not accept yes or no as arguments. This causes an error if you use a yes or no argument to mesg in your file. EXIT STATUS
The following exit values are returned: Message reception is allowed. Message reception is denied. An error occurred. EXAMPLES
To allow only appropriately authorized users to send messages to your terminal, enter: mesg no To allow everyone the permission to send messages to your terminal, enter: mesg yes To determine the state of message acceptance of your terminal, enter: mesg This will give one of the following responses, as appropriate: is yes is no ENVIRONMENT VARIABLES
The following environment variables affect the execution of mesg: Provides a default value for the internationalization variables that are unset or null. If LANG is unset or null, the corresponding value from the default locale is used. If any of the internationalization vari- ables contain an invalid setting, the utility behaves as if none of the variables had been defined. If set to a non-empty string value, overrides the values of all the other internationalization variables. Determines the locale for the interpretation of sequences of bytes of text data as characters (for example, single-byte as opposed to multibyte characters in arguments). Determines the locale for the for- mat and contents of diagnostic messages written to standard error. Determines the location of message catalogues for the processing of LC_MESSAGES. FILES
User profile User profile (csh) User profile (csh) Your current terminal SEE ALSO
Commands: chmod(1), csh(1), Bourne shell sh(1b), POSIX shell sh(1p), stty(1), talk(1), wall(1), write(1) Functions: chmod(2) Standards: standards(5) mesg(1)
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