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Top Forums UNIX for Dummies Questions & Answers taking a look at the code for some commands Post 302336786 by Straitsfan on Wednesday 22nd of July 2009 09:12:04 PM
Old 07-22-2009
taking a look at the code for some commands

just curious -- I was wondering if it's possible to open the file for a command and look at the code (say for the command more). I've just read about the PATH variable and the type command to find out where the file is, but when I tried to open the file, the terminal exited and logged me out.

In the long list for the file's location, there was an asterisk next to the file's name. I've forgotten what that means, but I'm guessing it has something to do with it.

Can anyone help me out?
 

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WRITE(1)						    BSD General Commands Manual 						  WRITE(1)

NAME
write -- send a message to another user SYNOPSIS
write user [ttyname] DESCRIPTION
The write utility allows you to communicate with other users, by copying lines from your terminal to theirs. When you run the write command, the user you are writing to gets a message of the form: Message from yourname@yourhost on yourtty at hh:mm ... Any further lines you enter will be copied to the specified user's terminal. If the other user wants to reply, they must run write as well. When you are done, type an end-of-file or interrupt character. The other user will see the message 'EOF' indicating that the conversation is over. You can prevent people (other than the super-user) from writing to you with the mesg(1) command. If the user you want to write to is logged in on more than one terminal, you can specify which terminal to write to by specifying the termi- nal name as the second operand to the write command. Alternatively, you can let write select one of the terminals - it will pick the one with the shortest idle time. This is so that if the user is logged in at work and also dialed up from home, the message will go to the right place. The traditional protocol for writing to someone is that the string '-o', either at the end of a line or on a line by itself, means that it's the other person's turn to talk. The string 'oo' means that the person believes the conversation to be over. SEE ALSO
mesg(1), talk(1), wall(1), who(1) HISTORY
A write command appeared in Version 1 AT&T UNIX. BSD
June 6, 1993 BSD

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