WALL(1) - General Commands Manual

WALL(1) - General Commands Manual # WALL(1) - General Commands Manual NAME # wall - write a message to users SYNOPSIS # wall [-g group] [file] DESCRIPTION # wall displays the contents of file, or, by default, its standard input, on the terminals of all currently logged in users. Only the superuser can write on the terminals of users who have chosen to deny messages or are using a program which automatically denies messages. ...