AGETTY(8) agetty - ,,getty" agetty [] [_...] [] agetty , ,,/bin/login". init(8). agetty - : o , , . 7- , , , 8- . : -U (); DEL (); ( ). --erase-chars --kill-chars. o Hayes(tm)- . o ( ). o /etc/issue . o /etc/issue /etc/issue.d. o . o /bin/login. o . o . /etc/gettydefs (System V) /etc/gettytab (SunOS 4) . /dev. ,,-" , agetty . System- V, ,,-" ,,--". _,... . agetty , . , (-@) . . ( --keep-baud) ,,9600". . init(1) , . ,,vt100", ,,linux" , ,,hurd" GNU Hurd . -8, --8bits 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 , -h /bin/login. --nohostname, -H /bin/login. --login-options. -f, --issue-file ,,:" /etc/issue ( ). , . , .issue . . --noissue . --show-issue ( ) . , . agetty . -h, --flow-control (RTS/CTS). (XON/XOFF) . -H, --host - ,,utmp" . , , agetty . , . -i, --noissue /etc/issue ( ) . ; . -I, --init-string - . . (\). , ( 10, 012), \12. -J, --noclear . . -l, --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 Hayes(tm)- . : ,,<><><>". agetty () _ . --extract-baud , . --list-speeds . . -n, --skip-login . --login-program BBS . --skip-login, agetty , . , 7- CR (13) . agetty ( /bin/login) . -N, --nonewline /etc/issue. -o, --login-options _ login-(1). ,,\u" . : --login-options '-h darkstar -- \u' --autologin, --login-program --remote. . -p, --login-pause . --autologin . -r, --chroot . -R, --hangup vhangup(2) . -s, --keep-baud . agetty . , . . -t, --timeout - - . . -U, --detect-case . . . -w, --wait-cr /etc/issue ( ) . --init-string. --nohints , . --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 . --nice . --reload agetty , . . inotify(7). --help . --version . agetty /etc/login.defs ( login.defs(5)). ( ,,shadow-utils"). agetty: LOGIN_PLAIN_PROMPT () agetty- ,,:". --nohostname . no (). /etc/inittab. . inittab(5) . : /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 - 1 ): /sbin/agetty --wait-cr --init-string 'ATE0Q1&D2&C1S0=1\015' 115200 ttyS1 --login-program --login-options, , . agetty ,,-" ( ), , . . ,,--" . ,,--" ,,\u". /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 . . The default paths may be completely overridden by the --issue-file option. In this case the specified path has to be a file or directory and all the default issue file and directory locations are ignored. --noissue. agetty --show-issue . o , , . o (\) . 4 4{interface} 4 ( : \4{eth0}). , (UP, non-LOCALBACK, RUNNING) . , . 6 6{interface} \4 IPv6. a Insert list of "good" IP addresses for all interfaces. It prints best candidates for remote login IP addresses: global and site addresses; if not available, temporary address with the longest lifetime, if not available, link address. Note that link addresses are printed with local interface name, but they has to be done with the interface name on the machine where they will be used. A Insert list of all IP addresses for all interfaces. b . d . e e{name} ( : \e{red} .\e{reset}). , \033. : , , , , , , , , , , , , , , , , , , , , . . s ( ). ,,uname -s". o ,,\S". S S{VARIABLE} /etc/os-release. /usr/lib/os-release. , ,,PRETTY_NAME" ( ,,\s"). o /etc/issue . ,,\S{ANSI_COLOR}" . l . m . uname -m. n , . 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" : ,,thingol.orcan.dk (Linux 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) SysV-. agetty systemd ( ,,https://systemd.io/CREDENTIALS/"). agetty systemd-: agetty.autologin () , agetty , --autologin. ( --extract-baud) agetty ( 30 ms 2400 ). , --extract-baud , . /etc/issue ( ) 7- . ( --extract-baud) . , syslog(3) . ; ,,utmp" ( System V); . Werner Fink , Karel Zak agetty W.Z. Venema Peter Orbaek . , ,,https://github.com/util-linux/util-linux/issues[issue tracker]". agetty ,,util-linux" . util-linux 2.42.3 2026-09-02 AGETTY(8)