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1.1 ! root 1: ! 2: ! 3: getty System Maintenance getty ! 4: ! 5: ! 6: ! 7: ! 8: Terminal initialization ! 9: ! 10: /eettcc/ggeettttyy _t_y_p_e ! 11: ! 12: The initialization process init invokes getty for each terminal ! 13: indicated in the file /etc/ttys. getty tries to read a user name ! 14: from the terminal which is the standard input, adapting its mode ! 15: settings accordingly. Then getty invokes login with the name ! 16: read. This process may set delays, mapping of upper to lower ! 17: case, speed, and whether the terminal normally uses carriage ! 18: return or linefeed to terminate input. ! 19: ! 20: If the terminal baud rate is wrong, the login message printed by ! 21: getty will appear garbled. If the specified type indicates vari- ! 22: able speeds, as described below, hitting BREAK will try the next ! 23: speed. ! 24: ! 25: init passes the third character in a line of the file /etc/ttys ! 26: as the type argument to getty. type conveys information about ! 27: the terminal port. An upper-case letter in the range A to S ! 28: specifies a hard-wired baud rate, as indicated in the header file ! 29: <sgtty.h>. Other characters specify a range of speeds suitable ! 30: to a dial-in modem. The following variable-speed settings are ! 31: recognized: ! 32: ! 33: 00 Cycles through speeds 300, 1200, 150, and 110 baud, in that ! 34: order. This is a good default setting for dial-in ports. ! 35: ! 36: - Teletype model 33, fixed at 110 baud. ! 37: ! 38: 11 Teletype model 37, fixed at 150 baud. ! 39: ! 40: 22 9600 baud with delays (e.g., Tektronix 4104). ! 41: ! 42: 33 Cycles between 2400, 1200, and 300 baud. This is used with ! 43: 2400-bps modems. ! 44: ! 45: 44 DECwriter (LA36) with delays. ! 46: ! 47: 55 Like 3, but starts at 300 baud. ! 48: ! 49: getty recognizes the following fixed-speed settings, for hard- ! 50: wired terminals: ! 51: ! 52: AA 50 baud ! 53: BB 75 baud ! 54: CC 110 baud ! 55: DD 134 baud ! 56: EE 150 baud ! 57: FF 200 baud ! 58: GG 300 baud ! 59: HH 600 baud ! 60: II 1200 baud ! 61: JJ 1800 baud ! 62: ! 63: ! 64: COHERENT Lexicon Page 1 ! 65: ! 66: ! 67: ! 68: ! 69: getty System Maintenance getty ! 70: ! 71: ! 72: ! 73: KK 2000 baud ! 74: LL 2400 baud ! 75: MM 3600 baud ! 76: NN 4800 baud ! 77: OO 7200 baud ! 78: PP 9600 baud ! 79: QQ 19200 baud ! 80: RR EXT ! 81: SS EXT ! 82: ! 83: ***** Files ***** ! 84: ! 85: /etc/tty ! 86: <sgtty.h> ! 87: ! 88: ***** See Also ***** ! 89: ! 90: init, ioctl(), login, sgtty.h, system maintenance, stty, ttys ! 91: ! 92: ! 93: ! 94: ! 95: ! 96: ! 97: ! 98: ! 99: ! 100: ! 101: ! 102: ! 103: ! 104: ! 105: ! 106: ! 107: ! 108: ! 109: ! 110: ! 111: ! 112: ! 113: ! 114: ! 115: ! 116: ! 117: ! 118: ! 119: ! 120: ! 121: ! 122: ! 123: ! 124: ! 125: ! 126: ! 127: ! 128: ! 129: ! 130: COHERENT Lexicon Page 2 ! 131: ! 132:
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