getty - system login banner
getty [banner ...]
Getty displays a system identification banner, reads a user name from
standard input and executes login with that name as argument.
Getty uses its arguments separated by spaces as a login banner. The
character sequences \n, \s and \t are printed as newline, space and tab.
Any other \x prints that x. The character sequences %s, %n, etc. produce
the same output as uname -s, uname -n, etc. The default banner is
The only other useful functionality offered by getty is that it can be
suspended by signal SIGUSR1 and restarted by SIGUSR2. This allows a
program such as modem(1) to temporarily claim a dialin line for dialout.
modem(1), ttytab(5), init(8).
Getty should be taught about modems and modem lines. The signal trick is
an awful hack.
Kees J. Bot (email@example.com)