Linux Information Exchange Command

Linux Information exchange command

1.echo: Display text on the monitor

Command syntax:

echo [-n] [ string ]

-N: indicates that the output text is not wrapped.

Example :

(1) will " Hello Linux "write to standard output

#echo Hello Linux

(2) the text " Hello Linux "Add to New file NewFile in

#echo Hello Linux>newfile

2.MESG: set permissions for other users to send information

Syntax commands :

MESG [Y|n]

Example :

(1) displays whether the current computer allows other users to use the Write command to send itself the status of a message

#mesg

(2) allow other users to send information to the current terminal

#mesg y

(3) do not allow other users to send information to the current terminal

#mesg N

3.wall: send messages to all logged-in users

Command syntax:

Wall [ message ]

Example: Send "HelloWorld" to all users

#wall ' Hello World '

4.write: send a message to the user

Command syntax:

Write [ user account ] [ terminal name ]

Linux Information Exchange Command