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mesg [y|n]
/usr/bin
stdin
stdout
- file
-- opt
--help
SysVinit
--version
The mesg program controls whether talk and write connections
can reach your terminal. mesg y permits them, mesg n denies them,
and mesg prints the current status (y or n).* mesg has no effect on
modern instant messaging programs like gaim.
$ mesg
is n
$ mesg y
tty
/usr/bin
stdin
stdout
- file
-- opt
--help
coreutils
--version
The tty program prints the name of the terminal device associated with the current shell.
$ tty
/dev/pts/4
Screen Output
echo
printf
yes
seq
clear
Print simple text on standard output
Print formatted text on standard output
Print repeated text on standard output
Print a sequence of numbers on standard output
Clear the screen or window
Linux provides several commands for printing messages on
standard output, in case you like to talk to yourself:
$ echo hello world
hello world
Each command has different strengths and intended purposes. These commands are invaluable for learning about
* At press time, mesg y on Fedora fails with the error message, “tty device is
not owned by group ‘tty’.” We expect this problem will get sorted out.
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