AGETTY(8) AGETTY(8) agetty - getty agetty [] [_...] [] agetty tty /bin/login. init(8). agetty : o tty (erase) (kill) (end-of-line) . 7- 8- . : Control-U () DEL backspace () (carriage return) (line feed) ( ). --erase-chars --kill-chars. o CONNECT Hayes(tm). o ( ). o /etc/issue. o /etc/issue /etc/issue.d. o . o /bin/login. o . o (carrier detect). /etc/gettydefs (System V) /etc/gettytab (SunOS 4). /dev. "-" agetty tty . System V "-" "--". baud_rate,... . agetty BREAK . null (Ctrl-@) . (virtual terminals). (serial terminals) ( --keep-baud) '9600'. term TERM. init(1) . 'vt100' 'linux' 'hurd' GNU Hurd . -8 --8bits tty 8 . -a --autologin _ . -f _ /bin/login. --login-options . --autologin getty agetty . -c --noreset cflags ( ) . termios(3) . -E --remote login(1) telnetd(8). agetty login(1) utmp(5). --host login(1) utmp(5). --host fakehost -h fakehost /bin/login. --nohostname -H /bin/login. --login-options. -f --issue-file ":" /etc/issue ( ). . .issue . . --noissue . --show-issue (issue) ( ) . . agetty. -h, --flow-control (RTS/CTS). (XON/XOFF) . -H --host fakehost fakehost utmp. agetty . . -i --noissue /etc/issue ( ) . . -I --init-string initstring tty . . (\). (ASCII 10 012) \12. -J --noclear . . -l --login-program login_program login_program /bin/login. . . --login-options. -L --local-line[=] CLOCAL. auto always never. always. --local-line auto. always . . never CLOCAL . auto agetty. CLOCAL . -m --extract-baud (baud rate) CONNECT Hayes(tm). : "". agetty baud_rate () . --extract-baud BREAK . --list-speeds . . -n --skip-login . --login-program BBS. --skip-login agetty . 7 ASCII CR (13). agetty ( /bin/login) (root). -N --nonewline /etc/issue. -o --login-options _ login(1). \u . : --login-options '-h darkstar -- \u' --autologin --login-program --remote. . -p --login-pause . --autologin (lazily spawning). -r --chroot (chroot) . -R --hangup vhangup(2) . -s --keep-baud . agetty BREAK. . BREAK . -t --timeout . . -U --detect-case . . (Unicode). -w --wait-cr /etc/issue ( ) . --init-string. --nohints Num Caps Scroll. --nohostname . . LOGIN_PLAIN_PROMPT /etc/login.defs ( ). --long-hostname . gethostname(3P) ( ) getaddrinfo(3). --erase-chars _ (" ") . '' '#' util-linux 2.23 . --kill-chars _ (" ") . '' '@' util-linux 2.23 . --chdir . --delay tty. --nice . --reload agetty . . inotify(7). --help . --version . agetty /etc/login.defs ( login.defs(5)). ( shadow-utils). agetty: LOGIN_PLAIN_PROMPT (boolean) agetty login:. --nohostname. no. /etc/inittab. . inittab(5) . tty : /sbin/agetty 9600 ttyS1 ( :): /sbin/agetty --local-line 9600 ttyS1 vt100 9600/2400/1200: /sbin/agetty --extract-baud --timeout 60 ttyS1 9600,2400,1200 Hayes 115200 ( DCD / DCD / DTR ): /sbin/agetty --wait-cr --init-string 'ATE0Q1&D2&C1S0=1\015' 115200 ttyS1 --login-program --login-options . agetty "-" ( ) . . "--" . "--" \u. (ISSUE FILES) /etc/issue. agetty /etc/issue.d. /etc/issue. /etc/issue . .issue . /etc/issue . 2.35 . agetty /run/issue /run/issue.d /usr/lib/issue /usr/lib/issue.d. /etc /run /usr/lib . 2.35 2.40 /etc/issue . 2.41 /etc/issue. . --issue-file. (issue) . --noissue. agetty --show-issue . . (\) . 4 4{interface} IPv4 (: \4{eth0}). interface (UP non-LOCALBACK RUNNING). IP . 6 6{interface} \4 IPv6. a IP "" . : (link address). . A IP . b . d . e e{} ( : \e{red} .\e{reset}). \033. : black blink blue bold brown cyan darkgray gray green halfbright lightblue lightcyan lightgray lightgreen lightmagenta lightred magenta red reset reverse yellow white. . s ( ). 'uname -s'. \S. S or S{VARIABLE} VARIABLE /etc/os-release. /usr/lib/os-release. VARIABLE PRETTY_NAME ( \s). /etc/issue . \S{ANSI_COLOR} . l tty . m . uname -m. n (hostname). uname -n. o NIS . hostname -d. O DNS . r . uname -r. t . u . U "1 user" " users" . v . . /etc/issue : \n.\o (\s \m \r) \t : This is thingol.orcan.dk ( i386 1.1.9) 18:29:30 /var/run/utmp . /etc/issue . /etc/os-release /usr/lib/os-release . /dev/console ( syslog(3)). /etc/inittab init(8) init SysV. agetty systemd ( ). agetty systemd : agetty.autologin () agetty --autologin. ( --extract-baud) agetty ( 30 2400 ). --extract-baud BREAK. /etc/issue ( ) 7- . ( --extract-baud) DCD. syslog(3). utmp ( System V ) . Werner Fink Karel Zak agetty W.Z. Venema Peter Orbaek . . agetty util-linux . util-linux 2.42.1 2026-05-18 AGETTY(8)