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Top Forums Shell Programming and Scripting Alternative network messaging? Post 302718667 by 123_abc on Saturday 20th of October 2012 12:16:48 PM
Old 10-20-2012
I think I am going to simulate a network with VirtualBox, because here I have arbitrary amount of independent OSs.

The shell script should work like this:
1. The user logs in. Depending on his privileges, he can send messages to one user or to a group of users.
2. The receiver gets the message. If he is not online, the sender gets an error message.
The whole script shouldn't be based on P2P.

I am still unsure on which core commands this script should be build.
 

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script(1)							   User Commands							 script(1)

NAME
script - make record of a terminal session SYNOPSIS
script [-a] [filename] DESCRIPTION
The script utility makes a record of everything printed on your screen. The record is written to filename. If no file name is given, the record is saved in the file typescript. See WARNINGS. The script command forks and creates a sub-shell, according to the value of $SHELL, and records the text from this session. The script ends when the forked shell exits or when Control-d is typed. OPTIONS
The following option is supported: -a Appends the session record to filename, rather than overwriting it. NOTES
script places everything that appears on the screen in filename, including prompts. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWcsu | +-----------------------------+-----------------------------+ |CSI |Enabled | +-----------------------------+-----------------------------+ SEE ALSO
attributes(5) WARNINGS
script can pose a security risk when used in directories that are writable by other users (for example, /tmp), especially when run by a privileged user, that is, root. Be sure that typescript is not a link before running script. SunOS 5.10 30 Jan 2004 script(1)
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